1
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Resende K, Zhao R, Liu Y, Baráth E, Lercher JA. Impact of Sn Lewis Acid Sites on the Dehydration of Cyclohexanol. ACS Catal 2024; 14:11741-11748. [PMID: 39114088 PMCID: PMC11301620 DOI: 10.1021/acscatal.4c01608] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/15/2024] [Revised: 06/07/2024] [Accepted: 07/11/2024] [Indexed: 08/10/2024]
Abstract
The impact of Sn on the concentration and strength of acid sites in Al containing zeolites with MFI topology and their catalytic activity for the dehydration of cyclohexanol in the aqueous phase has been investigated. The materials maintain constant Al concentrations and consequently Bro̷nsted acid site (BAS) concentrations, while exhibiting an increasing concentration of Sn Lewis acid sites (LAS). The presence of water alters LAS(Sn), leading to weak BAS(Sn) that increases the concentration of water in the zeolite micropore, while leaving the rate of dehydration of cyclohexanol unchanged. The TOF increases with the concentration of BAS(Al) in close contact with framework LAS(Sn), referred to as BAS(Pair). The increase in the Arrhenius pre-exponential factor, without affecting the activation barrier (E a), leads to the hypothesis that the proximity of both sites allows for a later transition state induced by the polarization of the C-O bond, leading in turn to a higher transition entropy.
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Affiliation(s)
- Karen
A. Resende
- Department
of Chemistry and Catalysis Research Center, Technische Universität München, Lichtenbergstrasse 4, Garching 85748, Germany
| | - Ruixue Zhao
- Department
of Chemistry and Catalysis Research Center, Technische Universität München, Lichtenbergstrasse 4, Garching 85748, Germany
| | - Yue Liu
- Department
of Chemistry and Catalysis Research Center, Technische Universität München, Lichtenbergstrasse 4, Garching 85748, Germany
| | - Eszter Baráth
- Department
of Chemistry and Catalysis Research Center, Technische Universität München, Lichtenbergstrasse 4, Garching 85748, Germany
| | - Johannes A. Lercher
- Department
of Chemistry and Catalysis Research Center, Technische Universität München, Lichtenbergstrasse 4, Garching 85748, Germany
- Institute
for Integrated Catalysis, Pacific Northwest
National Laboratory, Richland, Washington 99354, United States
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2
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Kim S, Chen F, Camaioni DM, Derewinski MA, Gutiérrez OY, Liu Y, Lercher JA. Confined Ionic Environments Tailoring the Reactivity of Molecules in the Micropores of BEA-Type Zeolite. J Am Chem Soc 2024; 146:17847-17853. [PMID: 38888888 PMCID: PMC11228971 DOI: 10.1021/jacs.4c03405] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/08/2024] [Revised: 05/28/2024] [Accepted: 05/30/2024] [Indexed: 06/20/2024]
Abstract
In the presence of water, hydronium ions formed within the micropores of zeolite H-BEA significantly influence the surrounding environment and the reactivity of organic substrates. The positive charge of these ions, coupled with the zeolite's negatively charged framework, results in an ionic environment that causes a strongly nonideal solvation behavior of cyclohexanol. This leads to a significantly higher excess chemical potential in the initial state and stabilizes at the same time the charged transition state in the dehydration of cyclohexanol. As a result, the free-energy barrier of the reaction is lowered, leading to a marked increase in the reaction rates. Nonetheless, there is a limit to the reaction rate enhancement by the hydronium ion concentration. Experiments conducted with low concentrations of reactants show that beyond an optimal concentration, the required spatial rearrangement between hydronium ions and cyclohexanols inhibits further increases in the reaction rate, leading to a peak in the intrinsic activity of hydronium ions. The quantification of excess chemical potential in both initial and transition states for zeolites H-BEA, along with findings from HMFI, provides a basis to generalize and predict rates for hydronium-ion-catalyzed dehydration reactions in Brønsted zeolites.
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Affiliation(s)
- Sungmin Kim
- Institute for Integrated Catalysis and Physical Science Division, Pacific Northwest National Laboratory, Richland, Washington 99354, United States
| | - Feng Chen
- Institute for Integrated Catalysis and Physical Science Division, Pacific Northwest National Laboratory, Richland, Washington 99354, United States
| | - Donald M Camaioni
- Institute for Integrated Catalysis and Physical Science Division, Pacific Northwest National Laboratory, Richland, Washington 99354, United States
| | - Miroslaw A Derewinski
- Institute for Integrated Catalysis and Physical Science Division, Pacific Northwest National Laboratory, Richland, Washington 99354, United States
| | - Oliver Y Gutiérrez
- Institute for Integrated Catalysis and Physical Science Division, Pacific Northwest National Laboratory, Richland, Washington 99354, United States
| | - Yue Liu
- Department of Chemistry and Catalysis Research Institute, TU München, Lichtenbergstrasse 4, Garching 85748, Germany
| | - Johannes A Lercher
- Institute for Integrated Catalysis and Physical Science Division, Pacific Northwest National Laboratory, Richland, Washington 99354, United States
- Department of Chemistry and Catalysis Research Institute, TU München, Lichtenbergstrasse 4, Garching 85748, Germany
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3
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Li S, Chen H. Solvent effect in H-BEA catalyzed cyclohexanol dehydration reaction. J Chem Phys 2024; 160:231101. [PMID: 38884394 DOI: 10.1063/5.0211554] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/31/2024] [Accepted: 05/29/2024] [Indexed: 06/18/2024] Open
Abstract
The solvent effect on H-BEA catalyzed cyclohexanol dehydration was investigated in water, dioxane, and cyclohexanol. The dynamic evolution of the Brønsted acid site of zeolite and its interaction with reactant molecules in different solvents were explored with ab initio molecular dynamics simulations, providing reliable configuration sampling to obtain configurations at equilibrium. Solvent profoundly changes the adsorption as well as the dehydration reaction of cyclohexanol in H-BEA, where the reaction is determined to follow the E2 mechanism in water and dioxane but the E1 mechanism in cyclohexanol untill saturation uptake. Near saturation uptake, all three solvents significantly reduce the cyclohexanol dehydration rates in H-BEA. Cyclohexanol loading also dramatically affects the kinetics of the dehydration reaction, displaying an overall decreasing trend with a local minimum present at intermediate loading of 6 molecules per unit cell, which is a result of the entropic effect associated with greater freedom of motion of the transition state. Rigorous quantification of enthalpy and entropy contributions to cyclohexanol adsorption and activation shed light on the solvent effect of zeolite-catalyzed alcohol dehydration.
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Affiliation(s)
- Sha Li
- Chemistry and Chemical Engineering Guangdong Laboratory, Shantou 515021, China
| | - Huimin Chen
- Chemistry and Chemical Engineering Guangdong Laboratory, Shantou 515021, China
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4
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Cleary SR, Starace AK, Curran-Velasco CC, Ruddy DA, McGuirk CM. The Overlooked Potential of Sulfated Zirconia: Reexamining Solid Superacidity Toward the Controlled Depolymerization of Polyolefins. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2024; 40:6612-6653. [PMID: 38509763 DOI: 10.1021/acs.langmuir.3c03966] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 03/22/2024]
Abstract
Closed-loop recycling via an efficient chemical process can help alleviate the global plastic waste crisis. However, conventional depolymerization methods for polyolefins, which compose more than 50% of plastics, demand high temperatures and pressures, employ precious noble metals, and/or yield complex mixtures of products limited to single-use fuels or oils. Superacidic forms of sulfated zirconia (SZrO) with Hammet Acidity Functions (H0) ≤ - 12 (i.e., stronger than 100% H2SO4) are industrially deployed heterogeneous catalysts capable of activating hydrocarbons under mild conditions and are shown to decompose polyolefins at temperatures near 200 °C and ambient pressure. Additionally, confinement of active sites in porous supports is known to radically increase selectivity, coking and sintering resistance, and acid site activity, presenting a possible approach to low-energy polyolefin depolymerization. However, a critical examination of the literature on SZrO led us to a surprising conclusion: despite 40 years of catalytic study, engineering, and industrial use, the surface chemistry of SZrO is poorly understood. Ostensibly spurred by SZrO's impressive catalytic activity, the application-driven study of SZrO has resulted in deleterious ambiguity in requisite synthetic conditions for superacidity and insufficient characterization of acidity, porosity, and active site structure. This ambiguity has produced significant knowledge gaps surrounding the synthesis, structure, and mechanisms of hydrocarbon activation for optimized SZrO, stunting the potential of this catalyst in olefin cracking and other industrially relevant reactions, such as isomerization, esterification, and alkylation. Toward mitigating these long extant issues, we herein identify and highlight these current shortcomings and knowledge gaps, propose explicit guidelines for characterization of and reporting on characterization of solid acidity, and discuss the potential of pore-confined superacids in the efficient and selective depolymerization of polyolefins.
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Affiliation(s)
- Scott R Cleary
- Department of Chemistry, Colorado School of Mines, Golden, Colorado 80401, United States
| | - Anne K Starace
- National Renewable Energy Laboratory, Golden, Colorado 80401, United States
| | - Caleb C Curran-Velasco
- Department of Chemistry, Colorado School of Mines, Golden, Colorado 80401, United States
| | - Daniel A Ruddy
- National Renewable Energy Laboratory, Golden, Colorado 80401, United States
| | - C Michael McGuirk
- Department of Chemistry, Colorado School of Mines, Golden, Colorado 80401, United States
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5
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Liu Q, van Bokhoven JA. Water structures on acidic zeolites and their roles in catalysis. Chem Soc Rev 2024; 53:3065-3095. [PMID: 38369933 DOI: 10.1039/d3cs00404j] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/20/2024]
Abstract
The local reaction environment of catalytic active sites can be manipulated to modify the kinetics and thermodynamic properties of heterogeneous catalysis. Because of the unique physical-chemical nature of water, heterogeneously catalyzed reactions involving specific interactions between water molecules and active sites on catalysts exhibit distinct outcomes that are different from those performed in the absence of water. Zeolitic materials are being applied with the presence of water for heterogeneous catalytic reactions in the chemical industry and our transition to sustainable energy. Mechanistic investigation and in-depth understanding about the behaviors and the roles of water are essentially required for zeolite chemistry and catalysis. In this review, we focus on the discussions of the nature and structures of water adsorbed/stabilized on Brønsted and Lewis acidic zeolites based on experimental observations as well as theoretical calculation results. The unveiled functions of water structures in determining the catalytic efficacy of zeolite-catalyzed reactions have been overviewed and the strategies frequently developed for enhancing the stabilization of zeolite catalysts are highlighted. Recent advancement will contribute to the development of innovative catalytic reactions and the rationalization of catalytic performances in terms of activity, selectivity and stability with the presence of water vapor or in condensed aqueous phase.
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Affiliation(s)
- Qiang Liu
- Institute for Chemical and Bioengineering, ETH Zurich, Vladimir Prelog Weg 1, 8093 Zurich, Switzerland.
| | - Jeroen A van Bokhoven
- Institute for Chemical and Bioengineering, ETH Zurich, Vladimir Prelog Weg 1, 8093 Zurich, Switzerland.
- Laboratory for Catalysis and Sustainable Chemistry, Paul Scherrer Institut, 5232 Villigen PSI, Switzerland
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6
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Wang Y, Feng X, Cao J, Zheng X, Gong X, Yu W, Wang M, Shi S. Metal-Free Activation of Molecular Oxygen by 9-Fluorenone-Based Porous Organic Polymers for Selective Aerobic Oxidation. Angew Chem Int Ed Engl 2024; 63:e202319139. [PMID: 38129314 DOI: 10.1002/anie.202319139] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/12/2023] [Revised: 12/19/2023] [Accepted: 12/21/2023] [Indexed: 12/23/2023]
Abstract
Oxygen activation is a critical step in heterogeneous oxidative processes, particularly in catalytic, electrolytic, and pharmaceutical applications. Among the various catalysts available for photocatalytic O2 activation, homogeneous aryl ketones are at the forefront. To avoid the degradation and deactivation of aryl ketones, 9-fluorenone-based porous organic polymers were designed and regulated by doping them with co-monomers. The obtained heterogeneous photocatalyst showed good performance in O2 activation, and its performance was better than that of homogeneous 9-fluorenone. The obtained heterogeneous photocatalyst showed good reusability. We believe that the presented method and findings represent an important step toward designing catalysts tailored for specific tasks.
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Affiliation(s)
- Yinwei Wang
- State Key Laboratory of Catalysis, Dalian National Laboratory for Clean Energy, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, 457 Zhongshan Road, Dalian, 116023, P. R. China
- University of Chinese Academy of Sciences, Beijing, 100049, P. R. China
| | - Xiao Feng
- State Key Laboratory of Catalysis, Dalian National Laboratory for Clean Energy, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, 457 Zhongshan Road, Dalian, 116023, P. R. China
- University of Chinese Academy of Sciences, Beijing, 100049, P. R. China
| | - Jieqi Cao
- State Key Laboratory of Catalysis, Dalian National Laboratory for Clean Energy, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, 457 Zhongshan Road, Dalian, 116023, P. R. China
- University of Chinese Academy of Sciences, Beijing, 100049, P. R. China
| | - Xiaoxia Zheng
- State Key Laboratory of Catalysis, Dalian National Laboratory for Clean Energy, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, 457 Zhongshan Road, Dalian, 116023, P. R. China
| | - Xinbin Gong
- State Key Laboratory of Catalysis, Dalian National Laboratory for Clean Energy, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, 457 Zhongshan Road, Dalian, 116023, P. R. China
| | - Weiqiang Yu
- State Key Laboratory of Catalysis, Dalian National Laboratory for Clean Energy, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, 457 Zhongshan Road, Dalian, 116023, P. R. China
| | - Min Wang
- School of Chemistry, Dalian University of Technology, Dalian, 116024, P. R. China
| | - Song Shi
- State Key Laboratory of Catalysis, Dalian National Laboratory for Clean Energy, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, 457 Zhongshan Road, Dalian, 116023, P. R. China
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7
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Wang C, Chu Y, Xiong D, Wang H, Hu M, Wang Q, Xu J, Deng F. Water-Induced Micro-Hydrophobic Effect Regulates Benzene Methylation in Zeolite. Angew Chem Int Ed Engl 2024; 63:e202313974. [PMID: 37934010 DOI: 10.1002/anie.202313974] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/19/2023] [Revised: 11/06/2023] [Accepted: 11/07/2023] [Indexed: 11/08/2023]
Abstract
Water is a ubiquitous component in heterogeneous catalysis over zeolites and can significantly influence the catalyst performance. However, the detailed mechanism insights into zeolite-catalyzed reactions under microscale aqueous environment remain elusive. Here, using multiple dimensional solid-state NMR experiments coupled with ultrahigh magic angle spinning technique and theoretical simulations, we establish a fundamental understanding of the role of water in benzene methylation over ZSM-5 zeolite under water vapor conditions. We show that water competes with benzene for the active sites of zeolite and facilitates the bimolecular reaction mechanism. The growth of water clusters induces a micro-hydrophobic effect in zeolite pores, which reorients benzene molecules and drives their interactions with surface methoxy species (SMS) on zeolite. We identify the formation and evolution of active SMS-Benzene complexes in a microscale aqueous environment and demonstrate that their accumulation in zeolite pores boosts benzene conversion and methylation.
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Affiliation(s)
- Chao Wang
- National Center for Magnetic Resonance in Wuhan, State Key Laboratory of Magnetic Resonance and Atomic and Molecular Physics, Wuhan Institute of Physics and Mathematics, Innovation Academy for Precision Measurement Science and Technology, Chinese Academy of Sciences, 430071, Wuhan, China
- University of Chinese Academy of Sciences, 100049, Beijing, China
| | - Yueying Chu
- National Center for Magnetic Resonance in Wuhan, State Key Laboratory of Magnetic Resonance and Atomic and Molecular Physics, Wuhan Institute of Physics and Mathematics, Innovation Academy for Precision Measurement Science and Technology, Chinese Academy of Sciences, 430071, Wuhan, China
- University of Chinese Academy of Sciences, 100049, Beijing, China
| | - Danfeng Xiong
- Key Laboratory for Advanced Materials and Joint International Research Laboratory of Precision Chemistry and Molecular Engineering, Feringa Nobel Prize Scientist Joint Research Center, Research Institute of Industrial Catalysis and Centre for Computational Chemistry, School of Chemistry and Molecular Engineering, East China University of Science and Technology, 200237, Shanghai, China) + These authors contributed equally to this work
| | - Haifeng Wang
- Key Laboratory for Advanced Materials and Joint International Research Laboratory of Precision Chemistry and Molecular Engineering, Feringa Nobel Prize Scientist Joint Research Center, Research Institute of Industrial Catalysis and Centre for Computational Chemistry, School of Chemistry and Molecular Engineering, East China University of Science and Technology, 200237, Shanghai, China) + These authors contributed equally to this work
| | - Min Hu
- National Center for Magnetic Resonance in Wuhan, State Key Laboratory of Magnetic Resonance and Atomic and Molecular Physics, Wuhan Institute of Physics and Mathematics, Innovation Academy for Precision Measurement Science and Technology, Chinese Academy of Sciences, 430071, Wuhan, China
- University of Chinese Academy of Sciences, 100049, Beijing, China
| | - Qiang Wang
- National Center for Magnetic Resonance in Wuhan, State Key Laboratory of Magnetic Resonance and Atomic and Molecular Physics, Wuhan Institute of Physics and Mathematics, Innovation Academy for Precision Measurement Science and Technology, Chinese Academy of Sciences, 430071, Wuhan, China
- University of Chinese Academy of Sciences, 100049, Beijing, China
| | - Jun Xu
- National Center for Magnetic Resonance in Wuhan, State Key Laboratory of Magnetic Resonance and Atomic and Molecular Physics, Wuhan Institute of Physics and Mathematics, Innovation Academy for Precision Measurement Science and Technology, Chinese Academy of Sciences, 430071, Wuhan, China
- University of Chinese Academy of Sciences, 100049, Beijing, China
| | - Feng Deng
- National Center for Magnetic Resonance in Wuhan, State Key Laboratory of Magnetic Resonance and Atomic and Molecular Physics, Wuhan Institute of Physics and Mathematics, Innovation Academy for Precision Measurement Science and Technology, Chinese Academy of Sciences, 430071, Wuhan, China
- University of Chinese Academy of Sciences, 100049, Beijing, China
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8
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Van Speybroeck V, Bocus M, Cnudde P, Vanduyfhuys L. Operando Modeling of Zeolite-Catalyzed Reactions Using First-Principles Molecular Dynamics Simulations. ACS Catal 2023; 13:11455-11493. [PMID: 37671178 PMCID: PMC10476167 DOI: 10.1021/acscatal.3c01945] [Citation(s) in RCA: 6] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/30/2023] [Revised: 07/27/2023] [Indexed: 09/07/2023]
Abstract
Within this Perspective, we critically reflect on the role of first-principles molecular dynamics (MD) simulations in unraveling the catalytic function within zeolites under operating conditions. First-principles MD simulations refer to methods where the dynamics of the nuclei is followed in time by integrating the Newtonian equations of motion on a potential energy surface that is determined by solving the quantum-mechanical many-body problem for the electrons. Catalytic solids used in industrial applications show an intriguing high degree of complexity, with phenomena taking place at a broad range of length and time scales. Additionally, the state and function of a catalyst critically depend on the operating conditions, such as temperature, moisture, presence of water, etc. Herein we show by means of a series of exemplary cases how first-principles MD simulations are instrumental to unravel the catalyst complexity at the molecular scale. Examples show how the nature of reactive species at higher catalytic temperatures may drastically change compared to species at lower temperatures and how the nature of active sites may dynamically change upon exposure to water. To simulate rare events, first-principles MD simulations need to be used in combination with enhanced sampling techniques to efficiently sample low-probability regions of phase space. Using these techniques, it is shown how competitive pathways at operating conditions can be discovered and how broad transition state regions can be explored. Interestingly, such simulations can also be used to study hindered diffusion under operating conditions. The cases shown clearly illustrate how first-principles MD simulations reveal insights into the catalytic function at operating conditions, which could not be discovered using static or local approaches where only a few points are considered on the potential energy surface (PES). Despite these advantages, some major hurdles still exist to fully integrate first-principles MD methods in a standard computational catalytic workflow or to use the output of MD simulations as input for multiple length/time scale methods that aim to bridge to the reactor scale. First of all, methods are needed that allow us to evaluate the interatomic forces with quantum-mechanical accuracy, albeit at a much lower computational cost compared to currently used density functional theory (DFT) methods. The use of DFT limits the currently attainable length/time scales to hundreds of picoseconds and a few nanometers, which are much smaller than realistic catalyst particle dimensions and time scales encountered in the catalysis process. One solution could be to construct machine learning potentials (MLPs), where a numerical potential is derived from underlying quantum-mechanical data, which could be used in subsequent MD simulations. As such, much longer length and time scales could be reached; however, quite some research is still necessary to construct MLPs for the complex systems encountered in industrially used catalysts. Second, most currently used enhanced sampling techniques in catalysis make use of collective variables (CVs), which are mostly determined based on chemical intuition. To explore complex reactive networks with MD simulations, methods are needed that allow the automatic discovery of CVs or methods that do not rely on a priori definition of CVs. Recently, various data-driven methods have been proposed, which could be explored for complex catalytic systems. Lastly, first-principles MD methods are currently mostly used to investigate local reactive events. We hope that with the rise of data-driven methods and more efficient methods to describe the PES, first-principles MD methods will in the future also be able to describe longer length/time scale processes in catalysis. This might lead to a consistent dynamic description of all steps-diffusion, adsorption, and reaction-as they take place at the catalyst particle level.
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Affiliation(s)
| | - Massimo Bocus
- Center for Molecular Modeling, Ghent University, Technologiepark 46, 9052 Zwijnaarde, Belgium
| | - Pieter Cnudde
- Center for Molecular Modeling, Ghent University, Technologiepark 46, 9052 Zwijnaarde, Belgium
| | - Louis Vanduyfhuys
- Center for Molecular Modeling, Ghent University, Technologiepark 46, 9052 Zwijnaarde, Belgium
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9
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Ma T, Xu C, Liu F, Feng Y, Zhang W, Tang W, Zhang H, Li X, Nie Y, Zhao S, Li Y, Ji D, Fang Z, He W, Guo K. Selective epoxidation and allylic oxidation of olefins catalyzed by BEA-Ti and porphyrin catalysts. MOLECULAR CATALYSIS 2023. [DOI: 10.1016/j.mcat.2023.113074] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 03/29/2023]
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10
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Chizallet C, Bouchy C, Larmier K, Pirngruber G. Molecular Views on Mechanisms of Brønsted Acid-Catalyzed Reactions in Zeolites. Chem Rev 2023; 123:6107-6196. [PMID: 36996355 DOI: 10.1021/acs.chemrev.2c00896] [Citation(s) in RCA: 9] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/01/2023]
Abstract
The Brønsted acidity of proton-exchanged zeolites has historically led to the most impactful applications of these materials in heterogeneous catalysis, mainly in the fields of transformations of hydrocarbons and oxygenates. Unravelling the mechanisms at the atomic scale of these transformations has been the object of tremendous efforts in the last decades. Such investigations have extended our fundamental knowledge about the respective roles of acidity and confinement in the catalytic properties of proton exchanged zeolites. The emerging concepts are of general relevance at the crossroad of heterogeneous catalysis and molecular chemistry. In the present review, emphasis is given to molecular views on the mechanism of generic transformations catalyzed by Brønsted acid sites of zeolites, combining the information gained from advanced kinetic analysis, in situ, and operando spectroscopies, and quantum chemistry calculations. After reviewing the current knowledge on the nature of the Brønsted acid sites themselves, and the key parameters in catalysis by zeolites, a focus is made on reactions undergone by alkenes, alkanes, aromatic molecules, alcohols, and polyhydroxy molecules. Elementary events of C-C, C-H, and C-O bond breaking and formation are at the core of these reactions. Outlooks are given to take up the future challenges in the field, aiming at getting ever more accurate views on these mechanisms, and as the ultimate goal, to provide rational tools for the design of improved zeolite-based Brønsted acid catalysts.
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Affiliation(s)
- Céline Chizallet
- IFP Energies nouvelles, Rond-Point de l'Echangeur de Solaize, BP 3, Solaize 69360, France
| | - Christophe Bouchy
- IFP Energies nouvelles, Rond-Point de l'Echangeur de Solaize, BP 3, Solaize 69360, France
| | - Kim Larmier
- IFP Energies nouvelles, Rond-Point de l'Echangeur de Solaize, BP 3, Solaize 69360, France
| | - Gerhard Pirngruber
- IFP Energies nouvelles, Rond-Point de l'Echangeur de Solaize, BP 3, Solaize 69360, France
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11
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Liutkova A, Zhang H, Simons JFM, Mezari B, Mirolo M, Garcia GA, Hensen EJM, Kosinov N. Ca Cations Impact the Local Environment inside HZSM-5 Pores during the Methanol-to-Hydrocarbons Reaction. ACS Catal 2023; 13:3471-3484. [PMID: 36970466 PMCID: PMC10028611 DOI: 10.1021/acscatal.3c00059] [Citation(s) in RCA: 6] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/04/2023] [Revised: 02/10/2023] [Indexed: 02/25/2023]
Abstract
The methanol-to-hydrocarbons (MTH) process is an industrially relevant method to produce valuable light olefins such as propylene. One of the ways to enhance propylene selectivity is to modify zeolite catalysts with alkaline earth cations. The underlying mechanistic aspects of this type of promotion are not well understood. Here, we study the interaction of Ca2+ with reaction intermediates and products formed during the MTH reaction. Using transient kinetic and spectroscopic tools, we find strong indications that the selectivity differences between Ca/ZSM-5 and HZSM-5 are related to the different local environment inside the pores due to the presence of Ca2+. In particular, Ca/ZSM-5 strongly retains water, hydrocarbons, and oxygenates, which occupy as much as 10% of the micropores during the ongoing MTH reaction. This change in the effective pore geometry affects the formation of hydrocarbon pool components and in this way directs the MTH reaction toward the olefin cycle.
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Affiliation(s)
- Anna Liutkova
- Laboratory of Inorganic Materials and Catalysis, Department of Chemical Engineering and Chemistry, Eindhoven University of Technology, P.O. Box 513, 5600 MB Eindhoven, The Netherlands
| | - Hao Zhang
- Laboratory of Inorganic Materials and Catalysis, Department of Chemical Engineering and Chemistry, Eindhoven University of Technology, P.O. Box 513, 5600 MB Eindhoven, The Netherlands
| | - Jérôme F. M. Simons
- Laboratory of Inorganic Materials and Catalysis, Department of Chemical Engineering and Chemistry, Eindhoven University of Technology, P.O. Box 513, 5600 MB Eindhoven, The Netherlands
| | - Brahim Mezari
- Laboratory of Inorganic Materials and Catalysis, Department of Chemical Engineering and Chemistry, Eindhoven University of Technology, P.O. Box 513, 5600 MB Eindhoven, The Netherlands
| | - Marta Mirolo
- ESRF, The European Synchrotron, 71 Avenue des Martyrs, CS40220, 38043 Grenoble, Cedex 9, France
| | - Gustavo A. Garcia
- Synchrotron SOLEIL, L’Orme des Merisiers, St Aubin, B.P. 48, 91192 Gif sur Yvette, France
| | - Emiel J. M. Hensen
- Laboratory of Inorganic Materials and Catalysis, Department of Chemical Engineering and Chemistry, Eindhoven University of Technology, P.O. Box 513, 5600 MB Eindhoven, The Netherlands
| | - Nikolay Kosinov
- Laboratory of Inorganic Materials and Catalysis, Department of Chemical Engineering and Chemistry, Eindhoven University of Technology, P.O. Box 513, 5600 MB Eindhoven, The Netherlands
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12
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Liu Q, Pfriem N, Cheng G, Baráth E, Liu Y, Lercher JA. Maximum Impact of Ionic Strength on Acid-Catalyzed Reaction Rates Induced by a Zeolite Microporous Environment. Angew Chem Int Ed Engl 2023; 62:e202208693. [PMID: 36317985 PMCID: PMC10107796 DOI: 10.1002/anie.202208693] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/13/2022] [Revised: 10/14/2022] [Accepted: 10/28/2022] [Indexed: 11/07/2022]
Abstract
The intracrystalline ionic environment in microporous zeolite can remarkably modify the excess chemical potential of adsorbed reactants and transition states, thereby influencing the catalytic turnover rates. However, a limit of the rate enhancement for aqueous-phase dehydration of alcohols appears to exist for zeolites with high ionic strength. The origin of such limitation has been hypothesized to be caused by the spatial constraints in the pores via, e.g., size exclusion effects. It is demonstrated here that the increase in turnover rate as well as the formation of a maximum and the rate drop are intrinsic consequences of the increasingly dense ionic environment in zeolite. The molecularly sized confines of zeolite create a unique ionic environment that monotonically favors the formation of alcohol-hydronium ion complexes in the micropores. The zeolite microporous environment determines the kinetics of catalytic steps and tailors the impact of ionic strength on catalytic rates.
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Affiliation(s)
- Qiang Liu
- Department of Chemistry and Catalysis Research CenterTechnical University of MunichLichtenbergstrasse 485747GarchingGermany
| | - Niklas Pfriem
- Department of Chemistry and Catalysis Research CenterTechnical University of MunichLichtenbergstrasse 485747GarchingGermany
| | - Guanhua Cheng
- Department of Chemistry and Catalysis Research CenterTechnical University of MunichLichtenbergstrasse 485747GarchingGermany
| | - Eszter Baráth
- Department of Chemistry and Catalysis Research CenterTechnical University of MunichLichtenbergstrasse 485747GarchingGermany
| | - Yue Liu
- Department of Chemistry and Catalysis Research CenterTechnical University of MunichLichtenbergstrasse 485747GarchingGermany
- Shanghai Key Laboratory of Green Chemistry and Chemical ProcessesSchool of Chemistry and Molecular EngineeringEast China Normal University200062ShanghaiP. R. China
| | - Johannes A. Lercher
- Department of Chemistry and Catalysis Research CenterTechnical University of MunichLichtenbergstrasse 485747GarchingGermany
- Institute for Integrated CatalysisPacific Northwest National LaboratoryP.O. Box 999RichlandWA 99352USA
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13
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Vernin NS, Gillespie D. Surface charge regulation using classical density functional theory: the effect of divalent potential determining ions. Phys Chem Chem Phys 2023; 25:1023-1031. [PMID: 36533726 DOI: 10.1039/d2cp03644d] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
The charge regulation approach has been used to describe the charge of surfaces susceptible to the presence of protons and other ions. Conventionally, this model is used with the Poisson-Boltzmann equation, which generally neglects the finite size of the ions and the electrostatic correlations. Recently, progress has been made by coupling charge regulation with classical density functional theory (DFT), which explicitly includes these correlations. However, little is known about charge regulation at surfaces with both acid-base equilibria and complexation with multivalent ions. The main purpose of this work is to investigate the role divalent ions play in charge regulation. Using DFT, we show that the size of the divalent ion has significant consequences on the surface charge density and it should not be neglected. For the surface reactions investigated, the larger the size of the divalent cation, the greater the charge on the surface due to higher divalent concentration there. At low divalent concentration, the ion correlations play a second-order but non-negligible role; using Poisson-Boltzmann theory with point ions cannot recover the DFT surface charge. At high concentrations, ion correlations play a dominant role by creating charge inversion.
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Affiliation(s)
- Nathalia Salles Vernin
- Department of Sanitary and Environmental Engineering, Rio de Janeiro State University, Rio de Janeiro, RJ 20550-900, Brazil.
| | - Dirk Gillespie
- Department of Physiology and Biophysics, Rush University Medical Center, Chicago, IL 60612, USA.
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14
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Matthewman EL, Kapila B, Grant ML, Weber CC. The amphiphilic nanostructure of ionic liquids affects the dehydration of alcohols. Chem Commun (Camb) 2022; 58:13572-13575. [PMID: 36412193 DOI: 10.1039/d2cc04854j] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
The effect of the amphiphilic nanostructure of ionic liquids on the dehydration of secondary alcohols to alkenes has been investigated. The influence of these nanostructures was inverted when an acid catalyst was added to the reaction. This phenomenon was ascribed to a balance between ion-solute interactions and the formation of solute-catalyst hydrogen bonds, highlighting the complex interplay between interactions and reaction outcomes in these nanostructured solvent systems.
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Affiliation(s)
- Emma L Matthewman
- School of Chemical Sciences, The University of Auckland, Auckland, New Zealand. .,MacDiarmid Institute for Advanced Materials and Nanotechnology, New Zealand
| | - Bhavana Kapila
- School of Science, Auckland University of Technology, Auckland, New Zealand
| | - Mason L Grant
- School of Chemical Sciences, The University of Auckland, Auckland, New Zealand. .,MacDiarmid Institute for Advanced Materials and Nanotechnology, New Zealand
| | - Cameron C Weber
- School of Chemical Sciences, The University of Auckland, Auckland, New Zealand. .,MacDiarmid Institute for Advanced Materials and Nanotechnology, New Zealand
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15
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Lin F, Xu M, Ramasamy KK, Li Z, Klinger JL, Schaidle JA, Wang H. Catalyst Deactivation and Its Mitigation during Catalytic Conversions of Biomass. ACS Catal 2022. [DOI: 10.1021/acscatal.2c02074] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Fan Lin
- Institute for Integrated Catalysis, Pacific Northwest National Laboratory, Richland, Washington99354, United States
| | - Mengze Xu
- Institute for Integrated Catalysis, Pacific Northwest National Laboratory, Richland, Washington99354, United States
| | - Karthikeyan K. Ramasamy
- Institute for Integrated Catalysis, Pacific Northwest National Laboratory, Richland, Washington99354, United States
| | - Zhenglong Li
- Energy and Transportation Sciences Division, Oak Ridge National Laboratory, Oak Ridge, Tennessee37830, United States
| | | | - Joshua A. Schaidle
- National Bioenergy Center, National Renewable Energy Laboratory, Golden, Colorado80401, United States
| | - Huamin Wang
- Institute for Integrated Catalysis, Pacific Northwest National Laboratory, Richland, Washington99354, United States
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16
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Karalin EA, Elimanova GG, Oparkin AV, Krupin AS, Kharlampidi KE. Study of the Equilibrium of Heterophase Reactions in the Gas–Liquid System Using Hydrogenation of the Carbonyl Group in Ketones. RUSS J APPL CHEM+ 2022. [DOI: 10.1134/s1070427222090105] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/22/2023]
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17
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He J, Lin L, Luo W. The Revitalization of ‘the Closer the Better’ in Zeolite‐Tailored Bifunctional Catalysts for Biomass Valorisation. ChemCatChem 2022. [DOI: 10.1002/cctc.202200728] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Jiang He
- Chinese Academy of Sciences Dalian Institute of Chemical Physics CAS Key Laboratory of Science and Technology on Applied Catalysis CHINA
| | - Lu Lin
- Chinese Academy of Sciences Dalian Institute of Chemical Physics CAS Key Laboratory of Science and Technology on Applied Catalysis CHINA
| | - Wenhao Luo
- Chinese Academy of Sciences Dalian Institute of Chemical Physics CAS Key Laboratory of Science and Technology on Applied Catalysis 457 Zhongshan Road116023 116023 Dalian CHINA
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18
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Chen W, Yi X, Liu Z, Tang X, Zheng A. Carbocation chemistry confined in zeolites: spectroscopic and theoretical characterizations. Chem Soc Rev 2022; 51:4337-4385. [PMID: 35536126 DOI: 10.1039/d1cs00966d] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
Acid-catalyzed reactions inside zeolites are one type of broadly applied industrial reactions, where carbocations are the most common intermediates of these reaction processes, including methanol to olefins, alkene/aromatic alkylation, and hydrocarbon cracking/isomerization. The fundamental research on these acid-catalyzed reactions is focused on the stability, evolution, and lifetime of carbocations under the zeolite confinement effect, which greatly affects the efficiency, selectivity and deactivation of zeolite catalysts. Therefore, a profound understanding of the carbocations confined in zeolites is not only beneficial to explain the reaction mechanism but also drive the design of new zeolite catalysts with ideal acidity and cages/channels. In this review, we provide both an in-depth understanding of the stabilization of carbocations by the pore confinement effect and summary of the advanced characterization methods to capture carbocations in zeolites, including UV-vis spectroscopy, solid-state NMR, fluorescence microscopy, IR spectroscopy and Raman spectroscopy. Also, we clarify the relationship between the activity and stability of carbocations in zeolite-catalyzed reactions, and further highlight the role of carbocations in various hydrocarbon conversion reactions inside zeolites with diverse frameworks and varying acidic properties.
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Affiliation(s)
- Wei Chen
- State Key Laboratory of Magnetic Resonance and Atomic and Molecular Physics, National Center for Magnetic Resonance in Wuhan, Wuhan Institute of Physics and Mathematics, Innovation Academy for Precision Measurement Science and Technology, Chinese Academy of Sciences, Wuhan 430071, P. R. China.
| | - Xianfeng Yi
- State Key Laboratory of Magnetic Resonance and Atomic and Molecular Physics, National Center for Magnetic Resonance in Wuhan, Wuhan Institute of Physics and Mathematics, Innovation Academy for Precision Measurement Science and Technology, Chinese Academy of Sciences, Wuhan 430071, P. R. China.
| | - Zhiqiang Liu
- State Key Laboratory of Magnetic Resonance and Atomic and Molecular Physics, National Center for Magnetic Resonance in Wuhan, Wuhan Institute of Physics and Mathematics, Innovation Academy for Precision Measurement Science and Technology, Chinese Academy of Sciences, Wuhan 430071, P. R. China.
| | - Xiaomin Tang
- State Key Laboratory of Magnetic Resonance and Atomic and Molecular Physics, National Center for Magnetic Resonance in Wuhan, Wuhan Institute of Physics and Mathematics, Innovation Academy for Precision Measurement Science and Technology, Chinese Academy of Sciences, Wuhan 430071, P. R. China.
| | - Anmin Zheng
- State Key Laboratory of Magnetic Resonance and Atomic and Molecular Physics, National Center for Magnetic Resonance in Wuhan, Wuhan Institute of Physics and Mathematics, Innovation Academy for Precision Measurement Science and Technology, Chinese Academy of Sciences, Wuhan 430071, P. R. China. .,University of Chinese Academy of Sciences, Beijing 100049, P. R. China
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19
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Ding M, Shan BQ, Peng B, Zhou JF, Zhang K. Dynamic Pt-OH -·H 2O-Ag species mediate coupled electron and proton transfer for catalytic hydride reduction of 4-nitrophenol at the confined nanoscale interface. Phys Chem Chem Phys 2022; 24:7923-7936. [PMID: 35311880 DOI: 10.1039/d2cp00673a] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
Abstract
Generally, the catalytic transformation of 4-nitrophenol (4-NP) to 4-aminophenol (4-AP) at heterogeneous metal surfaces follows a Langmuir-Hinshelwood (L-H) mechanism when sodium borohydride (NaBH4) is used as the sacrificial reductant. Herein, with Pt-Ag bimetallic nanoparticles confined in dendritic mesoporous silica nanospheres (DMSNs) as a model catalyst, we demonstrated that the conversion of 4-NP did not pass through the direct hydrogen transfer route with the hydride equivalents being supplied by borohydride via the bimolecular L-H mechanism, since Fourier transform infrared (FTIR) spectroscopy with the use of isotopically labeled reactants (NaBD4 and D2O) showed that the final product of 4-AP was composed of protons (or deuterons) that originated from the solvent water (or heavy water). Combined characterization by X-ray photoelectron spectroscopy (XPS), 1H nuclear magnetic resonance (NMR) and the optical excitation and photoluminescence spectrum evidenced that the surface hydrous hydroxide complex bound to the metal surface (also called structural water molecules, SWs), due to the space overlap of p orbitals of two O atoms in SWs, could form an ensemble of dynamic interface transient states, which provided the alternative electron and proton transfer channels for selective transformation of 4-NP. The cationic Pt species in the Ag-Pt bimetallic catalyst mainly acts as a dynamic adsorption center to temporally anchor SWs and related reactants, and not as the active site for hydrogen activation.
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Affiliation(s)
- Meng Ding
- Shanghai Key Laboratory of Green Chemistry and Chemical Processes, College of Chemistry and Molecular Engineering, East China Normal University, Shanghai 200062, China.
| | - Bing-Qian Shan
- Shanghai Key Laboratory of Green Chemistry and Chemical Processes, College of Chemistry and Molecular Engineering, East China Normal University, Shanghai 200062, China.
| | - Bo Peng
- Shanghai Key Laboratory of Green Chemistry and Chemical Processes, College of Chemistry and Molecular Engineering, East China Normal University, Shanghai 200062, China.
| | - Jia-Feng Zhou
- Shanghai Key Laboratory of Green Chemistry and Chemical Processes, College of Chemistry and Molecular Engineering, East China Normal University, Shanghai 200062, China.
| | - Kun Zhang
- Shanghai Key Laboratory of Green Chemistry and Chemical Processes, College of Chemistry and Molecular Engineering, East China Normal University, Shanghai 200062, China. .,Laboratoire de chimie, Ecole Normale Supérieure de Lyon, Institut de Chimie de Lyon, Université de Lyon, 46 Allée d'italie, 69364 Lyon cedex 07, France.,Shandong Provincial Key Laboratory of Chemical Energy Storage and Novel Cell Technology, School of Chemistry and Chemical Engineering, Liaocheng University, Liaocheng, 252059, Shandong, P. R. China.,Institute of Eco-Chongming, Shanghai 202162, China
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20
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Yang J, He Y, He J, Liu Y, Geng H, Chen S, Lin L, Liu M, Chen T, Jiang Q, Weckhuysen BM, Luo W, Wu Z. Enhanced Catalytic Performance through In Situ Encapsulation of Ultrafine Ru Clusters within a High-Aluminum Zeolite. ACS Catal 2022. [DOI: 10.1021/acscatal.1c05012] [Citation(s) in RCA: 10] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Affiliation(s)
- Jiangqian Yang
- State Key Laboratory of Heavy Oil Processing and the Key Laboratory of Catalysis of CNPC, China University of Petroleum-Beijing, Fuxue Road 18,
Changping, Beijing 102249, China
| | - Ying He
- State Key Laboratory of Heavy Oil Processing and the Key Laboratory of Catalysis of CNPC, China University of Petroleum-Beijing, Fuxue Road 18,
Changping, Beijing 102249, China
| | - Jiang He
- CAS Key Laboratory of Science and Technology on Applied Catalysis, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, 457 Zhongshan Road, Dalian 116023, China
- University of Chinese Academy of Sciences, Beijing 100049, China
| | - Yuanshuai Liu
- Inorganic Chemistry and Catalysis Group, Debye Institute for Nanomaterials Science, Utrecht University, Universiteitsweg 99, Utrecht 3584CG, The Netherlands
- Qingdao Institute of Bioenergy and Bioprocess Technology, Chinese Academy of Sciences, Songling Road 189, Laoshan District, Qingdao 266101, China
| | - Huawei Geng
- Qingdao Institute of Bioenergy and Bioprocess Technology, Chinese Academy of Sciences, Songling Road 189, Laoshan District, Qingdao 266101, China
| | - Shaohua Chen
- School of Materials Science and Engineering, Nankai University, Tianjin 300071, China
| | - Lu Lin
- CAS Key Laboratory of Science and Technology on Applied Catalysis, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, 457 Zhongshan Road, Dalian 116023, China
| | - Meng Liu
- State Key Laboratory of Heavy Oil Processing and the Key Laboratory of Catalysis of CNPC, China University of Petroleum-Beijing, Fuxue Road 18,
Changping, Beijing 102249, China
| | - Tiehong Chen
- School of Materials Science and Engineering, Nankai University, Tianjin 300071, China
| | - Qike Jiang
- Dalian National Laboratory for Clean Energy, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, 457 Zhongshan Road, Dalian 116023, China
| | - Bert M. Weckhuysen
- Inorganic Chemistry and Catalysis Group, Debye Institute for Nanomaterials Science, Utrecht University, Universiteitsweg 99, Utrecht 3584CG, The Netherlands
| | - Wenhao Luo
- CAS Key Laboratory of Science and Technology on Applied Catalysis, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, 457 Zhongshan Road, Dalian 116023, China
| | - Zhijie Wu
- State Key Laboratory of Heavy Oil Processing and the Key Laboratory of Catalysis of CNPC, China University of Petroleum-Beijing, Fuxue Road 18,
Changping, Beijing 102249, China
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21
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Abstract
Catalysis is at the core of chemistry and has been essential to make all the goods surrounding us, including fuels, coatings, plastics and other functional materials. In the near future, catalysis will also be an essential tool in making the shift from a fossil-fuel-based to a more renewable and circular society. To make this reality, we have to better understand the fundamental concept of the active site in catalysis. Here, we discuss the physical meaning - and deduce the validity and, therefore, usefulness - of some common approaches in heterogeneous catalysis, such as linking catalyst activity to a 'turnover frequency' and explaining catalytic performance in terms of 'structure sensitivity' or 'structure insensitivity'. Catalytic concepts from the fields of enzymatic and homogeneous catalysis are compared, ultimately realizing that the struggle that one encounters in defining the active site in most solid catalysts is likely the one we must overcome to reach our end goal: tailoring the precise functioning of the active sites with respect to many different parameters to satisfy our ever-growing needs. This article ends with an outlook of what may become feasible within the not-too-distant future with modern experimental and theoretical tools at hand.
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22
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Tan JZ, Bregante DT, Torres C, Flaherty DW. Transition state stabilization depends on solvent identity, pore size, and hydrophilicity for epoxidations in zeolites. J Catal 2022. [DOI: 10.1016/j.jcat.2021.11.029] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
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23
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Piccini G, Lee MS, Yuk SF, Zhang D, Collinge G, Kollias L, Nguyen MT, Glezakou VA, Rousseau R. Ab initio molecular dynamics with enhanced sampling in heterogeneous catalysis. Catal Sci Technol 2022. [DOI: 10.1039/d1cy01329g] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
Enhanced sampling ab initio simulations enable to study chemical phenomena in catalytic systems including thermal effects & anharmonicity, & collective dynamics describing enthalpic & entropic contributions, which can significantly impact on reaction free energy landscapes.
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Affiliation(s)
- GiovanniMaria Piccini
- Basic & Applied Molecular Foundations, Physical and Computational Sciences Directorate, Pacific Northwest National Laboratory, Richland, WA 99352, USA
- Istituto Eulero, Università della Svizzera italiana, Via Giuseppe Buffi 13, Lugano, Ticino, Switzerland
| | - Mal-Soon Lee
- Basic & Applied Molecular Foundations, Physical and Computational Sciences Directorate, Pacific Northwest National Laboratory, Richland, WA 99352, USA
| | - Simuck F. Yuk
- Basic & Applied Molecular Foundations, Physical and Computational Sciences Directorate, Pacific Northwest National Laboratory, Richland, WA 99352, USA
- Department of Chemistry and Life Science, United States Military Academy, West Point, NY 10996, USA
| | - Difan Zhang
- Basic & Applied Molecular Foundations, Physical and Computational Sciences Directorate, Pacific Northwest National Laboratory, Richland, WA 99352, USA
| | - Greg Collinge
- Basic & Applied Molecular Foundations, Physical and Computational Sciences Directorate, Pacific Northwest National Laboratory, Richland, WA 99352, USA
| | - Loukas Kollias
- Basic & Applied Molecular Foundations, Physical and Computational Sciences Directorate, Pacific Northwest National Laboratory, Richland, WA 99352, USA
| | - Manh-Thuong Nguyen
- Basic & Applied Molecular Foundations, Physical and Computational Sciences Directorate, Pacific Northwest National Laboratory, Richland, WA 99352, USA
| | - Vassiliki-Alexandra Glezakou
- Basic & Applied Molecular Foundations, Physical and Computational Sciences Directorate, Pacific Northwest National Laboratory, Richland, WA 99352, USA
| | - Roger Rousseau
- Basic & Applied Molecular Foundations, Physical and Computational Sciences Directorate, Pacific Northwest National Laboratory, Richland, WA 99352, USA
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24
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Wang C, Chu Y, Hu M, Cai W, Wang Q, Qi G, Li S, Xu J, Deng F. Insight into Carbocation‐Induced Noncovalent Interactions in the Methanol‐to‐Olefins Reaction over ZSM‐5 Zeolite by Solid‐State NMR Spectroscopy. Angew Chem Int Ed Engl 2021. [DOI: 10.1002/ange.202112948] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Chao Wang
- National Center for Magnetic Resonance in Wuhan State Key Laboratory of Magnetic Resonance and Atomic and Molecular Physics Wuhan Institute of Physics and Mathematics, Innovation Academy for Precision Measurement Science and Technology Chinese Academy of Sciences Wuhan 430071 P. R. China
- University of Chinese Academy of Sciences Beijing 100049 P. R. China
| | - Yueying Chu
- National Center for Magnetic Resonance in Wuhan State Key Laboratory of Magnetic Resonance and Atomic and Molecular Physics Wuhan Institute of Physics and Mathematics, Innovation Academy for Precision Measurement Science and Technology Chinese Academy of Sciences Wuhan 430071 P. R. China
- University of Chinese Academy of Sciences Beijing 100049 P. R. China
| | - Min Hu
- National Center for Magnetic Resonance in Wuhan State Key Laboratory of Magnetic Resonance and Atomic and Molecular Physics Wuhan Institute of Physics and Mathematics, Innovation Academy for Precision Measurement Science and Technology Chinese Academy of Sciences Wuhan 430071 P. R. China
- University of Chinese Academy of Sciences Beijing 100049 P. R. China
| | - Wenjin Cai
- National Center for Magnetic Resonance in Wuhan State Key Laboratory of Magnetic Resonance and Atomic and Molecular Physics Wuhan Institute of Physics and Mathematics, Innovation Academy for Precision Measurement Science and Technology Chinese Academy of Sciences Wuhan 430071 P. R. China
- University of Chinese Academy of Sciences Beijing 100049 P. R. China
| | - Qiang Wang
- National Center for Magnetic Resonance in Wuhan State Key Laboratory of Magnetic Resonance and Atomic and Molecular Physics Wuhan Institute of Physics and Mathematics, Innovation Academy for Precision Measurement Science and Technology Chinese Academy of Sciences Wuhan 430071 P. R. China
- University of Chinese Academy of Sciences Beijing 100049 P. R. China
| | - Guodong Qi
- National Center for Magnetic Resonance in Wuhan State Key Laboratory of Magnetic Resonance and Atomic and Molecular Physics Wuhan Institute of Physics and Mathematics, Innovation Academy for Precision Measurement Science and Technology Chinese Academy of Sciences Wuhan 430071 P. R. China
- University of Chinese Academy of Sciences Beijing 100049 P. R. China
| | - Shenhui Li
- National Center for Magnetic Resonance in Wuhan State Key Laboratory of Magnetic Resonance and Atomic and Molecular Physics Wuhan Institute of Physics and Mathematics, Innovation Academy for Precision Measurement Science and Technology Chinese Academy of Sciences Wuhan 430071 P. R. China
- University of Chinese Academy of Sciences Beijing 100049 P. R. China
| | - Jun Xu
- National Center for Magnetic Resonance in Wuhan State Key Laboratory of Magnetic Resonance and Atomic and Molecular Physics Wuhan Institute of Physics and Mathematics, Innovation Academy for Precision Measurement Science and Technology Chinese Academy of Sciences Wuhan 430071 P. R. China
- University of Chinese Academy of Sciences Beijing 100049 P. R. China
| | - Feng Deng
- National Center for Magnetic Resonance in Wuhan State Key Laboratory of Magnetic Resonance and Atomic and Molecular Physics Wuhan Institute of Physics and Mathematics, Innovation Academy for Precision Measurement Science and Technology Chinese Academy of Sciences Wuhan 430071 P. R. China
- University of Chinese Academy of Sciences Beijing 100049 P. R. China
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25
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Wang C, Chu Y, Hu M, Cai W, Wang Q, Qi G, Li S, Xu J, Deng F. Insight into Carbocation-Induced Noncovalent Interactions in the Methanol-to-Olefins Reaction over ZSM-5 Zeolite by Solid-State NMR Spectroscopy. Angew Chem Int Ed Engl 2021; 60:26847-26854. [PMID: 34636120 DOI: 10.1002/anie.202112948] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/23/2021] [Indexed: 11/06/2022]
Abstract
Carbocations such as cyclic carbenium ions are important intermediates in the zeolite-catalyzed methanol-to-olefins (MTO) reaction. The MTO reaction propagates through a complex hydrocarbon pool process. Understanding the carbocation-involved hydrocarbon pool reaction on a molecular level still remains challenging. Here we show that electron-deficient cyclopentenyl cations stabilized in ZSM-5 zeolite are able to capture the alkanes, methanol, and olefins produced during MTO reaction via noncovalent interactions. Intermolecular spatial proximities/interactions are identified by using two-dimensional 13 C-13 C correlation solid-state NMR spectroscopy. Combined NMR experiments and theoretical analysis suggests that in addition to the dispersion and CH/π interactions, the multiple functional groups in the cyclopentenyl cations produce strong attractive force via cation-induced dipole, cation-dipole and cation-π interactions. These carbocation-induced noncovalent interactions modulate the product selectivity of hydrocarbon pool reaction.
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Affiliation(s)
- Chao Wang
- National Center for Magnetic Resonance in Wuhan, State Key Laboratory of Magnetic Resonance and Atomic and Molecular Physics, Wuhan Institute of Physics and Mathematics, Innovation Academy for Precision Measurement Science and Technology, Chinese Academy of Sciences, Wuhan, 430071, P. R. China.,University of Chinese Academy of Sciences, Beijing, 100049, P. R. China
| | - Yueying Chu
- National Center for Magnetic Resonance in Wuhan, State Key Laboratory of Magnetic Resonance and Atomic and Molecular Physics, Wuhan Institute of Physics and Mathematics, Innovation Academy for Precision Measurement Science and Technology, Chinese Academy of Sciences, Wuhan, 430071, P. R. China.,University of Chinese Academy of Sciences, Beijing, 100049, P. R. China
| | - Min Hu
- National Center for Magnetic Resonance in Wuhan, State Key Laboratory of Magnetic Resonance and Atomic and Molecular Physics, Wuhan Institute of Physics and Mathematics, Innovation Academy for Precision Measurement Science and Technology, Chinese Academy of Sciences, Wuhan, 430071, P. R. China.,University of Chinese Academy of Sciences, Beijing, 100049, P. R. China
| | - Wenjin Cai
- National Center for Magnetic Resonance in Wuhan, State Key Laboratory of Magnetic Resonance and Atomic and Molecular Physics, Wuhan Institute of Physics and Mathematics, Innovation Academy for Precision Measurement Science and Technology, Chinese Academy of Sciences, Wuhan, 430071, P. R. China.,University of Chinese Academy of Sciences, Beijing, 100049, P. R. China
| | - Qiang Wang
- National Center for Magnetic Resonance in Wuhan, State Key Laboratory of Magnetic Resonance and Atomic and Molecular Physics, Wuhan Institute of Physics and Mathematics, Innovation Academy for Precision Measurement Science and Technology, Chinese Academy of Sciences, Wuhan, 430071, P. R. China.,University of Chinese Academy of Sciences, Beijing, 100049, P. R. China
| | - Guodong Qi
- National Center for Magnetic Resonance in Wuhan, State Key Laboratory of Magnetic Resonance and Atomic and Molecular Physics, Wuhan Institute of Physics and Mathematics, Innovation Academy for Precision Measurement Science and Technology, Chinese Academy of Sciences, Wuhan, 430071, P. R. China.,University of Chinese Academy of Sciences, Beijing, 100049, P. R. China
| | - Shenhui Li
- National Center for Magnetic Resonance in Wuhan, State Key Laboratory of Magnetic Resonance and Atomic and Molecular Physics, Wuhan Institute of Physics and Mathematics, Innovation Academy for Precision Measurement Science and Technology, Chinese Academy of Sciences, Wuhan, 430071, P. R. China.,University of Chinese Academy of Sciences, Beijing, 100049, P. R. China
| | - Jun Xu
- National Center for Magnetic Resonance in Wuhan, State Key Laboratory of Magnetic Resonance and Atomic and Molecular Physics, Wuhan Institute of Physics and Mathematics, Innovation Academy for Precision Measurement Science and Technology, Chinese Academy of Sciences, Wuhan, 430071, P. R. China.,University of Chinese Academy of Sciences, Beijing, 100049, P. R. China
| | - Feng Deng
- National Center for Magnetic Resonance in Wuhan, State Key Laboratory of Magnetic Resonance and Atomic and Molecular Physics, Wuhan Institute of Physics and Mathematics, Innovation Academy for Precision Measurement Science and Technology, Chinese Academy of Sciences, Wuhan, 430071, P. R. China.,University of Chinese Academy of Sciences, Beijing, 100049, P. R. China
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26
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Pfriem N, Liu Y, Zahn F, Shi H, Haller GL, Lercher JA. Impact of the Local Concentration of Hydronium Ions at Tungstate Surfaces for Acid-Catalyzed Alcohol Dehydration. J Am Chem Soc 2021; 143:20133-20143. [PMID: 34813324 DOI: 10.1021/jacs.1c07203] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Tungstate domains supported on ZrO2, Al2O3, TiO2, and activated carbon drastically influence the hydronium-ion-catalyzed aqueous-phase dehydration of alcohols. For all catalysts, the rate of cyclohexanol dehydration normalized to the concentration of Brønsted acid sites (turnover frequencies, TOFs) was lower for monotungstates than for polytungstates and larger crystallites of WO3. TOFs were constant when reaching or exceeding the monolayer coverage of tungstate, irrespective of the specific nature of surface structures that continuously evolve with the surface W loading. However, the TOFs with polytungstates and large WO3 crystallites depend strongly on the underlying support (e.g., WOx/C catalysts are 10-50-fold more active than WOx/Al2O3 catalysts). The electrical double layer (EDL) surrounding the negatively charged WOx domains contains hydrated hydronium ions, whose local concentrations change with the support. This varying concentration of interfacial hydronium ions ("local ionic strength") impacts the excess chemical potential of the reacting alcohols and induces the marked differences in the TOFs. Primary H/D kinetic isotope effects (∼3), together with the substantially positive entropy of activation (111-195 J mol-1 K-1), indicate that C-H(D) bond cleavage is involved in the kinetically relevant step of an E1-type mechanistic sequence, regardless of the support identity. The remarkable support dependence of the catalytic activity observed here for the aqueous-phase dehydration of cycloalkanols likely applies to a broad set of hydronium-ion-catalyzed organic reactions sensitive to ionic strength.
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Affiliation(s)
- Niklas Pfriem
- Department of Chemistry and Catalysis Research Center, Technische Universität München, Garching 85747, Germany
| | - Yue Liu
- Department of Chemistry and Catalysis Research Center, Technische Universität München, Garching 85747, Germany
| | - Florian Zahn
- Department of Chemistry and Catalysis Research Center, Technische Universität München, Garching 85747, Germany
| | - Hui Shi
- School of Chemistry and Chemical Engineering, Yangzhou University, Yangzhou, Jiangsu 225009, China
| | - Gary L Haller
- Department of Chemistry and Catalysis Research Center, Technische Universität München, Garching 85747, Germany.,Department of Chemical and Environmental Engineering, Yale University, New Haven, Connecticut 06520-8682, United States
| | - Johannes A Lercher
- Department of Chemistry and Catalysis Research Center, Technische Universität München, Garching 85747, Germany.,Institute for Integrated Catalysis, Pacific Northwest National Laboratory, P.O. Box 999, Richland, Washington 99352, United States
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27
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Lin L, Ge Y, Zhang H, Wang M, Xiao D, Ma D. Heterogeneous Catalysis in Water. JACS AU 2021; 1:1834-1848. [PMID: 34841403 PMCID: PMC8611672 DOI: 10.1021/jacsau.1c00319] [Citation(s) in RCA: 15] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 07/20/2021] [Indexed: 06/13/2023]
Abstract
Heterogeneous catalytic processes produce the majority of the fuels and chemicals in the chemical industry and have kept improving the welfare of human beings for centuries. Although most of the heterogeneous catalytic reactions occur at the gas-solid interface, numerous cases have demonstrated that the condensed water near the active site and/or the aqueous phase merging the catalysts play positive roles in enhancing the performance of heterogeneous catalysts and creating novel catalytic conversion routes. We enumerate the traditional heterogeneous catalytic reactions that enable significant rate/selectivity promotion in the aqueous phase or adsorbed micro water environment and discuss the role of water in specific systems. Some of the novel heterogeneous reactions achieved with only the assistance of the aqueous phase have been summarized. The development of reactions with the participation of the aqueous phase/water and the investigation of the role of water in the heterogeneous catalytic reactions will open new horizons for catalysts with better activity, improved selectivity, and novel processes.
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Affiliation(s)
- Lili Lin
- Institute
of Industrial Catalysis, State Key Laboratory of Green Chemistry Synthesis
Technology, College of Chemical Engineering, Zhejiang University of Technology, Hangzhou 310014, People’s
Republic of China
| | - Yuzhen Ge
- Beijing
National Laboratory for Molecular Sciences, College of Chemistry and
Molecular Engineering, and BIC-ESAT, Peking
University, Beijing 100871, People’s Republic
of China
| | - Hongbo Zhang
- School
of Materials Science and Engineering & National Institute for
Advanced Materials, Tianjin Key Laboratory for Rare Earth Materials
and Applications, Nankai University, Tianjin 300350, People’s Republic of China
| | - Meng Wang
- Beijing
National Laboratory for Molecular Sciences, College of Chemistry and
Molecular Engineering, and BIC-ESAT, Peking
University, Beijing 100871, People’s Republic
of China
| | - Dequan Xiao
- Center
for Integrative Materials Discovery, Department of Chemistry and Chemical
Engieering, University of New Haven, West Haven, Connecticut 06525, United States
| | - Ding Ma
- Beijing
National Laboratory for Molecular Sciences, College of Chemistry and
Molecular Engineering, and BIC-ESAT, Peking
University, Beijing 100871, People’s Republic
of China
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28
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Potts DS, Bregante DT, Adams JS, Torres C, Flaherty DW. Influence of solvent structure and hydrogen bonding on catalysis at solid-liquid interfaces. Chem Soc Rev 2021; 50:12308-12337. [PMID: 34569580 DOI: 10.1039/d1cs00539a] [Citation(s) in RCA: 26] [Impact Index Per Article: 8.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
Abstract
Solvent molecules interact with reactive species and alter the rates and selectivities of catalytic reactions by orders of magnitude. Specifically, solvent molecules can modify the free energies of liquid phase and surface species via solvation, participating directly as a reactant or co-catalyst, or competitively binding to active sites. These effects carry consequences for reactions relevant for the conversion of renewable or recyclable feedstocks, the development of distributed chemical manufacturing, and the utilization of renewable energy to drive chemical reactions. First, we describe the quantitative impact of these effects on steady-state catalytic turnover rates through a rate expression derived for a generic catalytic reaction (A → B), which illustrates the functional dependence of rates on each category of solvent interaction. Second, we connect these concepts to recent investigations of the effects of solvents on catalysis to show how interactions between solvent and reactant molecules at solid-liquid interfaces influence catalytic reactions. This discussion demonstrates that the design of effective liquid phase catalytic processes benefits from a clear understanding of these intermolecular interactions and their implications for rates and selectivities.
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Affiliation(s)
- David S Potts
- Department of Chemical and Biomolecular Engineering, University of Illinois at Urbana-Champaign, Urbana, IL 61801, USA.
| | - Daniel T Bregante
- Department of Chemical and Biomolecular Engineering, University of Illinois at Urbana-Champaign, Urbana, IL 61801, USA.
| | - Jason S Adams
- Department of Chemical and Biomolecular Engineering, University of Illinois at Urbana-Champaign, Urbana, IL 61801, USA.
| | - Chris Torres
- Department of Chemical and Biomolecular Engineering, University of Illinois at Urbana-Champaign, Urbana, IL 61801, USA.
| | - David W Flaherty
- Department of Chemical and Biomolecular Engineering, University of Illinois at Urbana-Champaign, Urbana, IL 61801, USA.
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29
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Milaković L, Hintermeier PH, Liu Y, Baráth E, Lercher JA. Influence of Intracrystalline Ionic Strength in MFI Zeolites on Aqueous Phase Dehydration of Methylcyclohexanols. Angew Chem Int Ed Engl 2021; 60:24806-24810. [PMID: 34384139 PMCID: PMC9290721 DOI: 10.1002/anie.202107947] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/15/2021] [Revised: 07/26/2021] [Indexed: 12/15/2022]
Abstract
The impact of the concentration of hydrated hydronium ions and in turn of the local ionic strength in MFI zeolites has been investigated for the aqueous phase dehydration of 4‐methylcyclohexanol (E1 mechanism) and cis‐2‐methylcyclohexanol (E2 mechanism). The E2 pathway with the latter alcohol led to a 2.5‐fold higher activity. The catalytic activity normalized to the hydronium ions (turnover frequency, TOF) passed through a pronounced maximum, which is attributed to the increasing excess chemical potential of the alcohols in the pores, increasing in parallel with the ionic strength and the additional work caused by repulsive interactions and charge separation induced by the bulky alcohols. While the maximum in rate observed is invariant with the mechanism or substitution, the reaction pathway is influencing the activation parameters differently.
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Affiliation(s)
- Lara Milaković
- Department of Chemistry and Catalysis Research Center, Technische Universität München, Lichtenbergstraβe 4, 85748, Garching, Germany
| | - Peter H Hintermeier
- Department of Chemistry and Catalysis Research Center, Technische Universität München, Lichtenbergstraβe 4, 85748, Garching, Germany.,Institute for Integrated Catalysis, Pacific Northwest National Laboratory, 902 Battelle Boulevard, Richland, WA, 99352, USA
| | - Yue Liu
- Department of Chemistry and Catalysis Research Center, Technische Universität München, Lichtenbergstraβe 4, 85748, Garching, Germany
| | - Eszter Baráth
- Department of Chemistry and Catalysis Research Center, Technische Universität München, Lichtenbergstraβe 4, 85748, Garching, Germany
| | - Johannes A Lercher
- Department of Chemistry and Catalysis Research Center, Technische Universität München, Lichtenbergstraβe 4, 85748, Garching, Germany.,Institute for Integrated Catalysis, Pacific Northwest National Laboratory, 902 Battelle Boulevard, Richland, WA, 99352, USA
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30
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Milaković L, Hintermeier PH, Liu Y, Baráth E, Lercher JA. Influence of Intracrystalline Ionic Strength in MFI Zeolites on Aqueous Phase Dehydration of Methylcyclohexanols. Angew Chem Int Ed Engl 2021. [DOI: 10.1002/ange.202107947] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Lara Milaković
- Department of Chemistry and Catalysis Research Center Technische Universität München Lichtenbergstraβe 4 85748 Garching Germany
| | - Peter H. Hintermeier
- Department of Chemistry and Catalysis Research Center Technische Universität München Lichtenbergstraβe 4 85748 Garching Germany
- Institute for Integrated Catalysis Pacific Northwest National Laboratory 902 Battelle Boulevard Richland WA 99352 USA
| | - Yue Liu
- Department of Chemistry and Catalysis Research Center Technische Universität München Lichtenbergstraβe 4 85748 Garching Germany
| | - Eszter Baráth
- Department of Chemistry and Catalysis Research Center Technische Universität München Lichtenbergstraβe 4 85748 Garching Germany
| | - Johannes A. Lercher
- Department of Chemistry and Catalysis Research Center Technische Universität München Lichtenbergstraβe 4 85748 Garching Germany
- Institute for Integrated Catalysis Pacific Northwest National Laboratory 902 Battelle Boulevard Richland WA 99352 USA
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31
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Yuan E, Li Q, Ni P, Jian P, Deng Q. Microbehavior mechanism of water mediator on palladium in catalytic hydrogenation of aromatic carbonyl: Enhancement of hydrogen shuttling and modification of electronic structure. MOLECULAR CATALYSIS 2021. [DOI: 10.1016/j.mcat.2021.111872] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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32
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Kumar G, Ren L, Pang Y, Li X, Chen H, Gulbinski J, Dauenhauer PJ, Tsapatsis M, Abdelrahman OA. Acid Sites of Phosphorus-Modified Zeosils. ACS Catal 2021. [DOI: 10.1021/acscatal.1c01588] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/25/2023]
Affiliation(s)
- Gaurav Kumar
- Department of Chemical Engineering and Materials Science, University of Minnesota, 421 Washington Avenue SE, Minneapolis, Minnesota 55455, United States
| | - Limin Ren
- Department of Chemical Engineering and Materials Science, University of Minnesota, 421 Washington Avenue SE, Minneapolis, Minnesota 55455, United States
- Catalysis Center for Energy Innovation, University of Delaware, 150 Academy Street, Newark, Delaware 19716, United States
| | - Yutong Pang
- Department of Chemical Engineering and Materials Science, University of Minnesota, 421 Washington Avenue SE, Minneapolis, Minnesota 55455, United States
| | - Xinyu Li
- Department of Chemical Engineering and Materials Science, University of Minnesota, 421 Washington Avenue SE, Minneapolis, Minnesota 55455, United States
| | - Han Chen
- Department of Chemical Engineering, University of Massachusetts Amherst, 686 North Pleasant Street, Amherst, Massachusetts 01003, United States
| | - Jason Gulbinski
- Department of Chemical Engineering, University of Massachusetts Amherst, 686 North Pleasant Street, Amherst, Massachusetts 01003, United States
| | - Paul J. Dauenhauer
- Department of Chemical Engineering and Materials Science, University of Minnesota, 421 Washington Avenue SE, Minneapolis, Minnesota 55455, United States
- Catalysis Center for Energy Innovation, University of Delaware, 150 Academy Street, Newark, Delaware 19716, United States
| | - Michael Tsapatsis
- Department of Chemical Engineering and Materials Science, University of Minnesota, 421 Washington Avenue SE, Minneapolis, Minnesota 55455, United States
- Department of Chemical and Biomolecular Engineering & Institute for NanoBioTechnology, Johns Hopkins University, 3400 North Charles Street, Baltimore, Maryland 21218, United States
- Applied Physics Laboratory, Johns Hopkins University, 11100 Johns Hopkins Road, Laurel, Maryland 20723, United States
- Catalysis Center for Energy Innovation, University of Delaware, 150 Academy Street, Newark, Delaware 19716, United States
| | - Omar A. Abdelrahman
- Department of Chemical Engineering, University of Massachusetts Amherst, 686 North Pleasant Street, Amherst, Massachusetts 01003, United States
- Catalysis Center for Energy Innovation, University of Delaware, 150 Academy Street, Newark, Delaware 19716, United States
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33
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Hack JH, Dombrowski JP, Ma X, Chen Y, Lewis NHC, Carpenter WB, Li C, Voth GA, Kung HH, Tokmakoff A. Structural Characterization of Protonated Water Clusters Confined in HZSM-5 Zeolites. J Am Chem Soc 2021; 143:10203-10213. [PMID: 34210123 DOI: 10.1021/jacs.1c03205] [Citation(s) in RCA: 24] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
Abstract
A molecular description of the structure and behavior of water confined in aluminosilicate zeolite pores is a crucial component for understanding zeolite acid chemistry under hydrous conditions. In this study, we use a combination of ultrafast two-dimensional infrared (2D IR) spectroscopy and ab initio molecular dynamics (AIMD) to study H2O confined in the pores of highly hydrated zeolite HZSM-5 (∼13 and ∼6 equivalents of H2O per Al atom). The 2D IR spectrum reveals correlations between the vibrations of both terminal and H-bonded O-H groups and the continuum absorption of the excess proton. These data are used to characterize the hydrogen-bonding network within the cluster by quantifying single-, double-, and non-hydrogen-bond donor water molecules. These results are found to be in good agreement with the statistics calculated from an AIMD simulation of an H+(H2O)8 cluster in HZSM-5. Furthermore, IR spectral assignments to local O-H environments are validated with DFT calculations on clusters drawn from AIMD simulations. The simulations reveal that the excess charge is detached from the zeolite and resides near the more highly coordinated water molecules in the cluster. When they are taken together, these results unambiguously assign the complex IR spectrum of highly hydrated HZSM-5, providing quantitative information on the molecular environments and hydrogen-bonding topology of protonated water clusters under extreme confinement.
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Affiliation(s)
- John H Hack
- Department of Chemistry, James Franck Institute, and Institute for Biophysical Dynamics, The University of Chicago, Chicago, Illinois 60637, United States
| | - James P Dombrowski
- Department of Chemical and Biological Engineering, Northwestern University, Evanston, Ilinois 60208-3120, United States
| | - Xinyou Ma
- Department of Chemistry, James Franck Institute, and Institute for Biophysical Dynamics, The University of Chicago, Chicago, Illinois 60637, United States.,Chicago Center for Theoretical Chemistry, The University of Chicago, Chicago, Illinois 60637, United States
| | - Yaxin Chen
- Department of Chemical and Biological Engineering, Northwestern University, Evanston, Ilinois 60208-3120, United States
| | - Nicholas H C Lewis
- Department of Chemistry, James Franck Institute, and Institute for Biophysical Dynamics, The University of Chicago, Chicago, Illinois 60637, United States
| | - William B Carpenter
- Department of Chemistry, James Franck Institute, and Institute for Biophysical Dynamics, The University of Chicago, Chicago, Illinois 60637, United States
| | - Chenghan Li
- Department of Chemistry, James Franck Institute, and Institute for Biophysical Dynamics, The University of Chicago, Chicago, Illinois 60637, United States.,Chicago Center for Theoretical Chemistry, The University of Chicago, Chicago, Illinois 60637, United States
| | - Gregory A Voth
- Department of Chemistry, James Franck Institute, and Institute for Biophysical Dynamics, The University of Chicago, Chicago, Illinois 60637, United States.,Chicago Center for Theoretical Chemistry, The University of Chicago, Chicago, Illinois 60637, United States
| | - Harold H Kung
- Department of Chemical and Biological Engineering, Northwestern University, Evanston, Ilinois 60208-3120, United States
| | - Andrei Tokmakoff
- Department of Chemistry, James Franck Institute, and Institute for Biophysical Dynamics, The University of Chicago, Chicago, Illinois 60637, United States
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34
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Barry E, Burns R, Chen W, De Hoe GX, De Oca JMM, de Pablo JJ, Dombrowski J, Elam JW, Felts AM, Galli G, Hack J, He Q, He X, Hoenig E, Iscen A, Kash B, Kung HH, Lewis NHC, Liu C, Ma X, Mane A, Martinson ABF, Mulfort KL, Murphy J, Mølhave K, Nealey P, Qiao Y, Rozyyev V, Schatz GC, Sibener SJ, Talapin D, Tiede DM, Tirrell MV, Tokmakoff A, Voth GA, Wang Z, Ye Z, Yesibolati M, Zaluzec NJ, Darling SB. Advanced Materials for Energy-Water Systems: The Central Role of Water/Solid Interfaces in Adsorption, Reactivity, and Transport. Chem Rev 2021; 121:9450-9501. [PMID: 34213328 DOI: 10.1021/acs.chemrev.1c00069] [Citation(s) in RCA: 23] [Impact Index Per Article: 7.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
The structure, chemistry, and charge of interfaces between materials and aqueous fluids play a central role in determining properties and performance of numerous water systems. Sensors, membranes, sorbents, and heterogeneous catalysts almost uniformly rely on specific interactions between their surfaces and components dissolved or suspended in the water-and often the water molecules themselves-to detect and mitigate contaminants. Deleterious processes in these systems such as fouling, scaling (inorganic deposits), and corrosion are also governed by interfacial phenomena. Despite the importance of these interfaces, much remains to be learned about their multiscale interactions. Developing a deeper understanding of the molecular- and mesoscale phenomena at water/solid interfaces will be essential to driving innovation to address grand challenges in supplying sufficient fit-for-purpose water in the future. In this Review, we examine the current state of knowledge surrounding adsorption, reactivity, and transport in several key classes of water/solid interfaces, drawing on a synergistic combination of theory, simulation, and experiments, and provide an outlook for prioritizing strategic research directions.
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Affiliation(s)
- Edward Barry
- Advanced Materials for Energy-Water Systems (AMEWS) Energy Frontier Research Center (EFRC), Argonne National Laboratory, 9700 South Cass Avenue, Lemont, Illinois 60439 United States.,Applied Materials Division, Argonne National Laboratory, 9700 South Cass Avenue, Lemont, Illinois 60439 United States.,Center for Molecular Engineering, Argonne National Laboratory, 9700 South Cass Avenue, Lemont, Illinois 60439 United States
| | - Raelyn Burns
- Advanced Materials for Energy-Water Systems (AMEWS) Energy Frontier Research Center (EFRC), Argonne National Laboratory, 9700 South Cass Avenue, Lemont, Illinois 60439 United States.,Applied Materials Division, Argonne National Laboratory, 9700 South Cass Avenue, Lemont, Illinois 60439 United States
| | - Wei Chen
- Advanced Materials for Energy-Water Systems (AMEWS) Energy Frontier Research Center (EFRC), Argonne National Laboratory, 9700 South Cass Avenue, Lemont, Illinois 60439 United States.,Materials Science Division, Argonne National Laboratory, 9700 South Cass Avenue, Lemont, Illinois 60439 United States.,Center for Molecular Engineering, Argonne National Laboratory, 9700 South Cass Avenue, Lemont, Illinois 60439 United States.,Pritzker School of Molecular Engineering, University of Chicago, 5640 South Ellis Avenue, Chicago, Illinois 60637 United States
| | - Guilhem X De Hoe
- Advanced Materials for Energy-Water Systems (AMEWS) Energy Frontier Research Center (EFRC), Argonne National Laboratory, 9700 South Cass Avenue, Lemont, Illinois 60439 United States.,Materials Science Division, Argonne National Laboratory, 9700 South Cass Avenue, Lemont, Illinois 60439 United States.,Center for Molecular Engineering, Argonne National Laboratory, 9700 South Cass Avenue, Lemont, Illinois 60439 United States.,Pritzker School of Molecular Engineering, University of Chicago, 5640 South Ellis Avenue, Chicago, Illinois 60637 United States
| | - Joan Manuel Montes De Oca
- Advanced Materials for Energy-Water Systems (AMEWS) Energy Frontier Research Center (EFRC), Argonne National Laboratory, 9700 South Cass Avenue, Lemont, Illinois 60439 United States.,Pritzker School of Molecular Engineering, University of Chicago, 5640 South Ellis Avenue, Chicago, Illinois 60637 United States
| | - Juan J de Pablo
- Advanced Materials for Energy-Water Systems (AMEWS) Energy Frontier Research Center (EFRC), Argonne National Laboratory, 9700 South Cass Avenue, Lemont, Illinois 60439 United States.,Materials Science Division, Argonne National Laboratory, 9700 South Cass Avenue, Lemont, Illinois 60439 United States.,Pritzker School of Molecular Engineering, University of Chicago, 5640 South Ellis Avenue, Chicago, Illinois 60637 United States
| | - James Dombrowski
- Advanced Materials for Energy-Water Systems (AMEWS) Energy Frontier Research Center (EFRC), Argonne National Laboratory, 9700 South Cass Avenue, Lemont, Illinois 60439 United States.,Department of Chemical and Biological Engineering, Northwestern University, 2145 Sheridan Road, Evanston, Illinois 60208 United States
| | - Jeffrey W Elam
- Advanced Materials for Energy-Water Systems (AMEWS) Energy Frontier Research Center (EFRC), Argonne National Laboratory, 9700 South Cass Avenue, Lemont, Illinois 60439 United States.,Applied Materials Division, Argonne National Laboratory, 9700 South Cass Avenue, Lemont, Illinois 60439 United States.,Center for Molecular Engineering, Argonne National Laboratory, 9700 South Cass Avenue, Lemont, Illinois 60439 United States
| | - Alanna M Felts
- Advanced Materials for Energy-Water Systems (AMEWS) Energy Frontier Research Center (EFRC), Argonne National Laboratory, 9700 South Cass Avenue, Lemont, Illinois 60439 United States.,Department of Chemistry, Northwestern University, 2145 Sheridan Road, Evanston, Illinois 60208 United States
| | - Giulia Galli
- Advanced Materials for Energy-Water Systems (AMEWS) Energy Frontier Research Center (EFRC), Argonne National Laboratory, 9700 South Cass Avenue, Lemont, Illinois 60439 United States.,Materials Science Division, Argonne National Laboratory, 9700 South Cass Avenue, Lemont, Illinois 60439 United States.,Pritzker School of Molecular Engineering, University of Chicago, 5640 South Ellis Avenue, Chicago, Illinois 60637 United States
| | - John Hack
- Advanced Materials for Energy-Water Systems (AMEWS) Energy Frontier Research Center (EFRC), Argonne National Laboratory, 9700 South Cass Avenue, Lemont, Illinois 60439 United States.,Department of Chemistry, University of Chicago, 5735 South Ellis Avenue, Chicago, Illinois 60637 United States
| | - Qiming He
- Advanced Materials for Energy-Water Systems (AMEWS) Energy Frontier Research Center (EFRC), Argonne National Laboratory, 9700 South Cass Avenue, Lemont, Illinois 60439 United States.,Materials Science Division, Argonne National Laboratory, 9700 South Cass Avenue, Lemont, Illinois 60439 United States.,Center for Molecular Engineering, Argonne National Laboratory, 9700 South Cass Avenue, Lemont, Illinois 60439 United States.,Pritzker School of Molecular Engineering, University of Chicago, 5640 South Ellis Avenue, Chicago, Illinois 60637 United States
| | - Xiang He
- Advanced Materials for Energy-Water Systems (AMEWS) Energy Frontier Research Center (EFRC), Argonne National Laboratory, 9700 South Cass Avenue, Lemont, Illinois 60439 United States.,Chemical Sciences and Engineering Division, Argonne National Laboratory, 9700 South Cass Avenue, Lemont, Illinois 60439 United States
| | - Eli Hoenig
- Advanced Materials for Energy-Water Systems (AMEWS) Energy Frontier Research Center (EFRC), Argonne National Laboratory, 9700 South Cass Avenue, Lemont, Illinois 60439 United States.,Pritzker School of Molecular Engineering, University of Chicago, 5640 South Ellis Avenue, Chicago, Illinois 60637 United States
| | - Aysenur Iscen
- Advanced Materials for Energy-Water Systems (AMEWS) Energy Frontier Research Center (EFRC), Argonne National Laboratory, 9700 South Cass Avenue, Lemont, Illinois 60439 United States.,Department of Chemical and Biological Engineering, Northwestern University, 2145 Sheridan Road, Evanston, Illinois 60208 United States
| | - Benjamin Kash
- Pritzker School of Molecular Engineering, University of Chicago, 5640 South Ellis Avenue, Chicago, Illinois 60637 United States
| | - Harold H Kung
- Advanced Materials for Energy-Water Systems (AMEWS) Energy Frontier Research Center (EFRC), Argonne National Laboratory, 9700 South Cass Avenue, Lemont, Illinois 60439 United States.,Department of Chemical and Biological Engineering, Northwestern University, 2145 Sheridan Road, Evanston, Illinois 60208 United States
| | - Nicholas H C Lewis
- Advanced Materials for Energy-Water Systems (AMEWS) Energy Frontier Research Center (EFRC), Argonne National Laboratory, 9700 South Cass Avenue, Lemont, Illinois 60439 United States.,Department of Chemistry, University of Chicago, 5735 South Ellis Avenue, Chicago, Illinois 60637 United States
| | - Chong Liu
- Advanced Materials for Energy-Water Systems (AMEWS) Energy Frontier Research Center (EFRC), Argonne National Laboratory, 9700 South Cass Avenue, Lemont, Illinois 60439 United States.,Pritzker School of Molecular Engineering, University of Chicago, 5640 South Ellis Avenue, Chicago, Illinois 60637 United States
| | - Xinyou Ma
- Advanced Materials for Energy-Water Systems (AMEWS) Energy Frontier Research Center (EFRC), Argonne National Laboratory, 9700 South Cass Avenue, Lemont, Illinois 60439 United States.,Department of Chemistry, University of Chicago, 5735 South Ellis Avenue, Chicago, Illinois 60637 United States
| | - Anil Mane
- Advanced Materials for Energy-Water Systems (AMEWS) Energy Frontier Research Center (EFRC), Argonne National Laboratory, 9700 South Cass Avenue, Lemont, Illinois 60439 United States.,Applied Materials Division, Argonne National Laboratory, 9700 South Cass Avenue, Lemont, Illinois 60439 United States
| | - Alex B F Martinson
- Advanced Materials for Energy-Water Systems (AMEWS) Energy Frontier Research Center (EFRC), Argonne National Laboratory, 9700 South Cass Avenue, Lemont, Illinois 60439 United States.,Materials Science Division, Argonne National Laboratory, 9700 South Cass Avenue, Lemont, Illinois 60439 United States.,Center for Molecular Engineering, Argonne National Laboratory, 9700 South Cass Avenue, Lemont, Illinois 60439 United States
| | - Karen L Mulfort
- Advanced Materials for Energy-Water Systems (AMEWS) Energy Frontier Research Center (EFRC), Argonne National Laboratory, 9700 South Cass Avenue, Lemont, Illinois 60439 United States.,Chemical Sciences and Engineering Division, Argonne National Laboratory, 9700 South Cass Avenue, Lemont, Illinois 60439 United States
| | - Julia Murphy
- Advanced Materials for Energy-Water Systems (AMEWS) Energy Frontier Research Center (EFRC), Argonne National Laboratory, 9700 South Cass Avenue, Lemont, Illinois 60439 United States.,Department of Chemistry, University of Chicago, 5735 South Ellis Avenue, Chicago, Illinois 60637 United States
| | - Kristian Mølhave
- Advanced Materials for Energy-Water Systems (AMEWS) Energy Frontier Research Center (EFRC), Argonne National Laboratory, 9700 South Cass Avenue, Lemont, Illinois 60439 United States.,Technical University of Denmark, Anker Engelunds Vej 1 Bygning 101A, Kgs. Lyngby, Lyngby, Hovedstaden 2800, DK Denmark
| | - Paul Nealey
- Advanced Materials for Energy-Water Systems (AMEWS) Energy Frontier Research Center (EFRC), Argonne National Laboratory, 9700 South Cass Avenue, Lemont, Illinois 60439 United States.,Materials Science Division, Argonne National Laboratory, 9700 South Cass Avenue, Lemont, Illinois 60439 United States.,Pritzker School of Molecular Engineering, University of Chicago, 5640 South Ellis Avenue, Chicago, Illinois 60637 United States
| | - Yijun Qiao
- Advanced Materials for Energy-Water Systems (AMEWS) Energy Frontier Research Center (EFRC), Argonne National Laboratory, 9700 South Cass Avenue, Lemont, Illinois 60439 United States.,Materials Science Division, Argonne National Laboratory, 9700 South Cass Avenue, Lemont, Illinois 60439 United States.,Center for Molecular Engineering, Argonne National Laboratory, 9700 South Cass Avenue, Lemont, Illinois 60439 United States
| | - Vepa Rozyyev
- Advanced Materials for Energy-Water Systems (AMEWS) Energy Frontier Research Center (EFRC), Argonne National Laboratory, 9700 South Cass Avenue, Lemont, Illinois 60439 United States.,Applied Materials Division, Argonne National Laboratory, 9700 South Cass Avenue, Lemont, Illinois 60439 United States
| | - George C Schatz
- Advanced Materials for Energy-Water Systems (AMEWS) Energy Frontier Research Center (EFRC), Argonne National Laboratory, 9700 South Cass Avenue, Lemont, Illinois 60439 United States.,Department of Chemistry, Northwestern University, 2145 Sheridan Road, Evanston, Illinois 60208 United States
| | - Steven J Sibener
- Advanced Materials for Energy-Water Systems (AMEWS) Energy Frontier Research Center (EFRC), Argonne National Laboratory, 9700 South Cass Avenue, Lemont, Illinois 60439 United States.,Department of Chemistry, University of Chicago, 5735 South Ellis Avenue, Chicago, Illinois 60637 United States
| | - Dmitri Talapin
- Advanced Materials for Energy-Water Systems (AMEWS) Energy Frontier Research Center (EFRC), Argonne National Laboratory, 9700 South Cass Avenue, Lemont, Illinois 60439 United States.,Department of Chemistry, University of Chicago, 5735 South Ellis Avenue, Chicago, Illinois 60637 United States
| | - David M Tiede
- Advanced Materials for Energy-Water Systems (AMEWS) Energy Frontier Research Center (EFRC), Argonne National Laboratory, 9700 South Cass Avenue, Lemont, Illinois 60439 United States.,Chemical Sciences and Engineering Division, Argonne National Laboratory, 9700 South Cass Avenue, Lemont, Illinois 60439 United States
| | - Matthew V Tirrell
- Advanced Materials for Energy-Water Systems (AMEWS) Energy Frontier Research Center (EFRC), Argonne National Laboratory, 9700 South Cass Avenue, Lemont, Illinois 60439 United States.,Materials Science Division, Argonne National Laboratory, 9700 South Cass Avenue, Lemont, Illinois 60439 United States.,Center for Molecular Engineering, Argonne National Laboratory, 9700 South Cass Avenue, Lemont, Illinois 60439 United States.,Pritzker School of Molecular Engineering, University of Chicago, 5640 South Ellis Avenue, Chicago, Illinois 60637 United States
| | - Andrei Tokmakoff
- Advanced Materials for Energy-Water Systems (AMEWS) Energy Frontier Research Center (EFRC), Argonne National Laboratory, 9700 South Cass Avenue, Lemont, Illinois 60439 United States.,Department of Chemistry, University of Chicago, 5735 South Ellis Avenue, Chicago, Illinois 60637 United States
| | - Gregory A Voth
- Advanced Materials for Energy-Water Systems (AMEWS) Energy Frontier Research Center (EFRC), Argonne National Laboratory, 9700 South Cass Avenue, Lemont, Illinois 60439 United States.,Department of Chemistry, University of Chicago, 5735 South Ellis Avenue, Chicago, Illinois 60637 United States
| | - Zhongyang Wang
- Advanced Materials for Energy-Water Systems (AMEWS) Energy Frontier Research Center (EFRC), Argonne National Laboratory, 9700 South Cass Avenue, Lemont, Illinois 60439 United States.,Pritzker School of Molecular Engineering, University of Chicago, 5640 South Ellis Avenue, Chicago, Illinois 60637 United States
| | - Zifan Ye
- Advanced Materials for Energy-Water Systems (AMEWS) Energy Frontier Research Center (EFRC), Argonne National Laboratory, 9700 South Cass Avenue, Lemont, Illinois 60439 United States.,Pritzker School of Molecular Engineering, University of Chicago, 5640 South Ellis Avenue, Chicago, Illinois 60637 United States
| | - Murat Yesibolati
- Advanced Materials for Energy-Water Systems (AMEWS) Energy Frontier Research Center (EFRC), Argonne National Laboratory, 9700 South Cass Avenue, Lemont, Illinois 60439 United States.,Technical University of Denmark, Anker Engelunds Vej 1 Bygning 101A, Kgs. Lyngby, Lyngby, Hovedstaden 2800, DK Denmark
| | - Nestor J Zaluzec
- Advanced Materials for Energy-Water Systems (AMEWS) Energy Frontier Research Center (EFRC), Argonne National Laboratory, 9700 South Cass Avenue, Lemont, Illinois 60439 United States.,Photon Sciences Directorate, Argonne National Laboratory, 9700 South Cass Avenue, Lemont, Illinois 60439 United States
| | - Seth B Darling
- Advanced Materials for Energy-Water Systems (AMEWS) Energy Frontier Research Center (EFRC), Argonne National Laboratory, 9700 South Cass Avenue, Lemont, Illinois 60439 United States.,Center for Molecular Engineering, Argonne National Laboratory, 9700 South Cass Avenue, Lemont, Illinois 60439 United States.,Chemical Sciences and Engineering Division, Argonne National Laboratory, 9700 South Cass Avenue, Lemont, Illinois 60439 United States.,Pritzker School of Molecular Engineering, University of Chicago, 5640 South Ellis Avenue, Chicago, Illinois 60637 United States
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35
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Dai J, Zhang H. Recent Advances in Catalytic Confinement Effect within Micro/Meso-Porous Crystalline Materials. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2021; 17:e2005334. [PMID: 33728734 DOI: 10.1002/smll.202005334] [Citation(s) in RCA: 31] [Impact Index Per Article: 10.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/29/2020] [Revised: 10/14/2020] [Indexed: 06/12/2023]
Abstract
Micro/meso-porous crystalline materials with a well-defined pore structure, such as zeolites, carbon nanotubes, and metal-organic frameworks, are of great significance in the development of catalytic systems for scientific and industrial demands. The confinement effect aroused by pore features of porous crystalline materials has triggered great interest in heterogeneous catalysis. Catalytic reactions in confined spaces exhibit unique behaviors compared to those observed on bulk materials. More interestingly, chemical reactivity can be modulated in different ways by the confinement effect, despite the fact that the mechanism on how the confinement effect changes the reaction remains unclear. In this review, a systematic discussion and fundamental understanding is provided concerning the concept of confinement effect, highlighting the impact of confinement effects on diffusion, adsorption/desorption, and catalytic reaction in typical micro/meso-porous crystalline materials, including zeolites, carbon nanotubes, and metal-organic frameworks. Relevant studies demonstrate that confinement effect affords not only shape selectivity against reactants/products, but also modulates surface electron distribution of active species confined within porous environments, thereby successively affecting the catalytic reactivity, selectivity, and stability. This review provides a useful guide for researchers attempting to design excellent porous crystalline catalysts based on the concept of confinement effect in heterogeneous catalysis.
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Affiliation(s)
- Jingjing Dai
- School of Materials Science and Engineering and National Institute for Advanced Materials, Tianjin Key Laboratory for Rare Earth Materials and Applications, Nankai University, Tianjin, 300350, China
| | - Hongbo Zhang
- School of Materials Science and Engineering and National Institute for Advanced Materials, Tianjin Key Laboratory for Rare Earth Materials and Applications, Nankai University, Tianjin, 300350, China
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36
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Stanciakova K, Weckhuysen B. Water–active site interactions in zeolites and their relevance in catalysis. TRENDS IN CHEMISTRY 2021. [DOI: 10.1016/j.trechm.2021.03.004] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/17/2023]
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37
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Pfriem N, Hintermeier PH, Eckstein S, Kim S, Liu Q, Shi H, Milakovic L, Liu Y, Haller GL, Baráth E, Liu Y, Lercher JA. Role of the ionic environment in enhancing the activity of reacting molecules in zeolite pores. Science 2021; 372:952-957. [PMID: 33958482 DOI: 10.1126/science.abh3418] [Citation(s) in RCA: 43] [Impact Index Per Article: 14.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/02/2021] [Accepted: 04/23/2021] [Indexed: 11/02/2022]
Abstract
Tailoring the molecular environment around catalytically active sites allows for the enhancement of catalytic reactivity through a hitherto unexplored pathway. In zeolites, the presence of water creates an ionic environment via the formation of hydrated hydronium ions and the negatively charged framework aluminum tetrahedra. The high density of cation-anion pairs determined by the aluminum concentration of a zeolite induces a high local ionic strength that increases the excess chemical potential of sorbed and uncharged organic reactants. Charged transition states (carbocations for example) are stabilized, which reduces the energy barrier and leads to higher reaction rates. Using the intramolecular dehydration of cyclohexanol on H-MFI zeolites in water, we quantitatively show an enhancement of the reaction rate by the presence of high ionic strength as well as show potential limitations of this strategy.
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Affiliation(s)
- Niklas Pfriem
- Department of Chemistry and Catalysis Research Center, Technical University of Munich, Lichtenbergstrasse 4, 85747 Garching, Germany
| | - Peter H Hintermeier
- Department of Chemistry and Catalysis Research Center, Technical University of Munich, Lichtenbergstrasse 4, 85747 Garching, Germany
| | - Sebastian Eckstein
- Department of Chemistry and Catalysis Research Center, Technical University of Munich, Lichtenbergstrasse 4, 85747 Garching, Germany
| | - Sungmin Kim
- Institute for Integrated Catalysis, Pacific Northwest National Laboratory, P.O. Box 999, Richland, WA 99352, USA
| | - Qiang Liu
- Department of Chemistry and Catalysis Research Center, Technical University of Munich, Lichtenbergstrasse 4, 85747 Garching, Germany.,Paul Scherrer Institute, Forschungsstrasse 111, 5232 Villigen PSI, Switzerland
| | - Hui Shi
- Department of Chemistry and Catalysis Research Center, Technical University of Munich, Lichtenbergstrasse 4, 85747 Garching, Germany.,School of Chemistry and Chemical Engineering, Yangzhou University, Siwangting Road 180, 225009 Yangzhou, Jiangsu, China
| | - Lara Milakovic
- Department of Chemistry and Catalysis Research Center, Technical University of Munich, Lichtenbergstrasse 4, 85747 Garching, Germany
| | - Yuanshuai Liu
- Department of Chemistry and Catalysis Research Center, Technical University of Munich, Lichtenbergstrasse 4, 85747 Garching, Germany.,Qingdao Institute of Bioenergy and Bioprocess Technology, Chinese Academy of Sciences, Songling Road 189, Laoshan District, Qingdao, China
| | - Gary L Haller
- Department of Chemistry and Catalysis Research Center, Technical University of Munich, Lichtenbergstrasse 4, 85747 Garching, Germany
| | - Eszter Baráth
- Department of Chemistry and Catalysis Research Center, Technical University of Munich, Lichtenbergstrasse 4, 85747 Garching, Germany
| | - Yue Liu
- Department of Chemistry and Catalysis Research Center, Technical University of Munich, Lichtenbergstrasse 4, 85747 Garching, Germany.
| | - Johannes A Lercher
- Department of Chemistry and Catalysis Research Center, Technical University of Munich, Lichtenbergstrasse 4, 85747 Garching, Germany. .,Institute for Integrated Catalysis, Pacific Northwest National Laboratory, P.O. Box 999, Richland, WA 99352, USA
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38
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Grifoni E, Piccini G, Lercher JA, Glezakou VA, Rousseau R, Parrinello M. Confinement effects and acid strength in zeolites. Nat Commun 2021; 12:2630. [PMID: 33976197 PMCID: PMC8113345 DOI: 10.1038/s41467-021-22936-0] [Citation(s) in RCA: 50] [Impact Index Per Article: 16.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/17/2020] [Accepted: 03/30/2021] [Indexed: 02/03/2023] Open
Abstract
Chemical reactivity and sorption in zeolites are coupled to confinement and-to a lesser extent-to the acid strength of Brønsted acid sites (BAS). In presence of water the zeolite Brønsted acid sites eventually convert into hydronium ions. The gradual transition from zeolite Brønsted acid sites to hydronium ions in zeolites of varying pore size is examined by ab initio molecular dynamics combined with enhanced sampling based on Well-Tempered Metadynamics and a recently developed set of collective variables. While at low water content (1-2 water/BAS) the acidic protons prefer to be shared between zeolites and water, higher water contents (n > 2) invariably lead to solvation of the protons within a localized water cluster adjacent to the BAS. At low water loadings the standard free energy of the formed complexes is dominated by enthalpy and is associated with the acid strength of the BAS and the space around the site. Conversely, the entropy increases linearly with the concentration of waters in the pores, favors proton solvation and is independent of the pore size/shape.
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Affiliation(s)
- Emanuele Grifoni
- grid.5801.c0000 0001 2156 2780Department of Chemistry and Applied Biosciences, ETH Zurich, c/o USI Campus, Via Giuseppe Buffi 13, Lugano, Ticino Switzerland ,grid.29078.340000 0001 2203 2861Institute of Computational Science, Università della Svizzera italiana (USI), Via Giuseppe Buffi 13, Lugano, Ticino Switzerland ,grid.6093.cPresent Address: Scuola Normale Superiore, Piazza dei Cavalieri, Pisa, Italy
| | - GiovanniMaria Piccini
- grid.5801.c0000 0001 2156 2780Department of Chemistry and Applied Biosciences, ETH Zurich, c/o USI Campus, Via Giuseppe Buffi 13, Lugano, Ticino Switzerland ,grid.29078.340000 0001 2203 2861Institute of Computational Science, Università della Svizzera italiana (USI), Via Giuseppe Buffi 13, Lugano, Ticino Switzerland ,grid.451303.00000 0001 2218 3491Institute for Integrated Catalysis, Pacific Northwest National Laboratory, Richland, WA USA
| | - Johannes A. Lercher
- grid.451303.00000 0001 2218 3491Institute for Integrated Catalysis, Pacific Northwest National Laboratory, Richland, WA USA ,grid.6936.a0000000123222966Department Chemie and Catalysis Research Center, TU München, Lichtenbergstr. 4, Garching, Germany
| | - Vassiliki-Alexandra Glezakou
- grid.451303.00000 0001 2218 3491Institute for Integrated Catalysis, Pacific Northwest National Laboratory, Richland, WA USA
| | - Roger Rousseau
- grid.451303.00000 0001 2218 3491Institute for Integrated Catalysis, Pacific Northwest National Laboratory, Richland, WA USA
| | - Michele Parrinello
- grid.5801.c0000 0001 2156 2780Department of Chemistry and Applied Biosciences, ETH Zurich, c/o USI Campus, Via Giuseppe Buffi 13, Lugano, Ticino Switzerland ,grid.29078.340000 0001 2203 2861Institute of Computational Science, Università della Svizzera italiana (USI), Via Giuseppe Buffi 13, Lugano, Ticino Switzerland ,grid.25786.3e0000 0004 1764 2907Italian Institute of Technology, Via Morego 30, Genova, Italy
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39
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Liu P, Yan Z, Mei D. Insights into protonation for cyclohexanol/water mixtures at the zeolitic Brønsted acid site. Phys Chem Chem Phys 2021; 23:10395-10401. [PMID: 33889887 DOI: 10.1039/d0cp06523d] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Proton transfer from Brønsted acid sites (BASs) to alcohol molecules ignites the acid-catalyzed alcohol dehydration reactions. For aqueous phase dehydration reactions in zeolites, the coexisting water molecules around BASs in the zeolite pores significantly affect the alcohol dehydration activity. In the present work, proton transfer processes among the BASs of H-BEA zeolites, the adsorbed cyclohexanol and surrounding water clusters with different sizes up to 8 water molecules were investigated using ab initio molecular dynamics (AIMD) simulations combined with the multiple-walker well-tempered metadynamics algorithm. The plausible proton locations and proton transfer processes were characterized using two/three-dimensional free energy landscapes. The strong proton affinity makes the protonated cyclohexanol stable species until a water trimer is formed. The proton either is shared between protonated cyclohexanol and the water trimer or remains with the water trimer (H7O3+). With a further increase in water concentrations, the proton prefers to remain with the water clusters.
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Affiliation(s)
- Peng Liu
- School of Chemistry and Chemical Engineering, State Key Laboratory of Separation Membranes and Membrane Processes, Tiangong University, Tianjin 300387, P. R. China.
| | - Zhenxin Yan
- School of Chemistry and Chemical Engineering, State Key Laboratory of Separation Membranes and Membrane Processes, Tiangong University, Tianjin 300387, P. R. China.
| | - Donghai Mei
- School of Chemistry and Chemical Engineering, State Key Laboratory of Separation Membranes and Membrane Processes, Tiangong University, Tianjin 300387, P. R. China. and School of Environmental Science and Engineering, Tiangong University, Tianjin 300387, P. R. China
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40
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Bates JS, Gounder R. Kinetic effects of molecular clustering and solvation by extended networks in zeolite acid catalysis. Chem Sci 2021; 12:4699-4708. [PMID: 34168752 PMCID: PMC8179612 DOI: 10.1039/d1sc00151e] [Citation(s) in RCA: 13] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/11/2021] [Accepted: 02/17/2021] [Indexed: 01/06/2023] Open
Abstract
Reactions catalyzed within porous inorganic and organic materials and at electrochemical interfaces commonly occur at high coverage and in condensed media, causing turnover rates to depend strongly on interfacial structure and composition, collectively referred to as "solvent effects". Transition state theory treatments define how solvation phenomena enter kinetic rate expressions, and identify two distinct types of solvent effects that originate from molecular clustering and from the solvation of such clusters by extended solvent networks. We review examples from the recent literature that investigate reactions within microporous zeolite catalysts to illustrate these concepts, and provide a critical appraisal of open questions in the field where future research can aid in developing new chemistry and catalyst design principles.
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Affiliation(s)
- Jason S Bates
- Charles D. Davidson School of Chemical Engineering, Purdue University 480 Stadium Mall Drive West Lafayette IN 47907 USA
| | - Rajamani Gounder
- Charles D. Davidson School of Chemical Engineering, Purdue University 480 Stadium Mall Drive West Lafayette IN 47907 USA
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41
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Chen F, Shetty M, Wang M, Shi H, Liu Y, Camaioni DM, Gutiérrez OY, Lercher JA. Differences in Mechanism and Rate of Zeolite-Catalyzed Cyclohexanol Dehydration in Apolar and Aqueous Phase. ACS Catal 2021. [DOI: 10.1021/acscatal.0c05674] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Feng Chen
- Institute for Integrated Catalysis, Pacific Northwest National Laboratory, P.O. Box 999, Richland, Washington 99352, United States
| | - Manish Shetty
- Institute for Integrated Catalysis, Pacific Northwest National Laboratory, P.O. Box 999, Richland, Washington 99352, United States
| | - Meng Wang
- Institute for Integrated Catalysis, Pacific Northwest National Laboratory, P.O. Box 999, Richland, Washington 99352, United States
| | - Hui Shi
- Department of Chemistry and Catalysis Research Center, Technische Universität München, Lichtenbergstrasse 4, 85748 Garching, Germany
| | - Yuanshuai Liu
- Department of Chemistry and Catalysis Research Center, Technische Universität München, Lichtenbergstrasse 4, 85748 Garching, Germany
| | - Donald M. Camaioni
- Institute for Integrated Catalysis, Pacific Northwest National Laboratory, P.O. Box 999, Richland, Washington 99352, United States
| | - Oliver Y. Gutiérrez
- Institute for Integrated Catalysis, Pacific Northwest National Laboratory, P.O. Box 999, Richland, Washington 99352, United States
| | - Johannes A. Lercher
- Institute for Integrated Catalysis, Pacific Northwest National Laboratory, P.O. Box 999, Richland, Washington 99352, United States
- Department of Chemistry and Catalysis Research Center, Technische Universität München, Lichtenbergstrasse 4, 85748 Garching, Germany
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42
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Shamzhy M, Gil B, Opanasenko M, Roth WJ, Čejka J. MWW and MFI Frameworks as Model Layered Zeolites: Structures, Transformations, Properties, and Activity. ACS Catal 2021. [DOI: 10.1021/acscatal.0c05332] [Citation(s) in RCA: 31] [Impact Index Per Article: 10.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Mariya Shamzhy
- Department of Physical and Macromolecular Chemistry, Faculty of Sciences, Charles University, Hlavova 8, 128 43 Prague 2, Czech Republic
| | - Barbara Gil
- Faculty of Chemistry, Jagiellonian University, Gronostajowa 2, 30-387 Kraków, Poland
| | - Maksym Opanasenko
- Department of Physical and Macromolecular Chemistry, Faculty of Sciences, Charles University, Hlavova 8, 128 43 Prague 2, Czech Republic
| | - Wieslaw J. Roth
- Faculty of Chemistry, Jagiellonian University, Gronostajowa 2, 30-387 Kraków, Poland
| | - Jiří Čejka
- Department of Physical and Macromolecular Chemistry, Faculty of Sciences, Charles University, Hlavova 8, 128 43 Prague 2, Czech Republic
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43
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Shetty M, Wang H, Chen F, Jaegers N, Liu Y, Camaioni DM, Gutiérrez OY, Lercher JA. Directing the Rate-Enhancement for Hydronium Ion Catalyzed Dehydration via Organization of Alkanols in Nanoscopic Confinements. Angew Chem Int Ed Engl 2021; 60:2304-2311. [PMID: 33009700 PMCID: PMC7898603 DOI: 10.1002/anie.202009835] [Citation(s) in RCA: 13] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/17/2020] [Indexed: 11/10/2022]
Abstract
Alkanol dehydration rates catalyzed by hydronium ions are enhanced by the dimensions of steric confinements of zeolite pores as well as by intraporous intermolecular interactions with other alkanols. The higher rates with zeolite MFI having pores smaller than those of zeolite BEA for dehydration of secondary alkanols, 3-heptanol and 2-methyl-3-hexanol, is caused by the lower activation enthalpy in the tighter confinements of MFI that offsets a less positive activation entropy. The higher activity in BEA than in MFI for dehydration of a tertiary alkanol, 2-methyl-2-hexanol, is primarily attributed to the reduction of the activation enthalpy by stabilizing intraporous interactions of the Cβ -H transition state with surrounding alcohol molecules. Overall, we show that the positive impact of zeolite confinements results from the stabilization of transition state provided by the confinement and intermolecular interaction of alkanols with the transition state, which is impacted by both the size of confinements and the structure of alkanols in the E1 pathway of dehydration.
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Affiliation(s)
- Manish Shetty
- Institute of Integrated CatalysisPacific Northwest National Laboratory (PNNL)P.O. Box 999RichlandWA99352USA
| | - Huamin Wang
- Institute of Integrated CatalysisPacific Northwest National Laboratory (PNNL)P.O. Box 999RichlandWA99352USA
| | - Feng Chen
- Institute of Integrated CatalysisPacific Northwest National Laboratory (PNNL)P.O. Box 999RichlandWA99352USA
| | - Nicholas Jaegers
- Institute of Integrated CatalysisPacific Northwest National Laboratory (PNNL)P.O. Box 999RichlandWA99352USA
| | - Yue Liu
- Department of Chemistry and Catalysis Research CenterTechnical University MünchenLichtenbergstrasse 485747MünchenGermany
| | - Donald M. Camaioni
- Institute of Integrated CatalysisPacific Northwest National Laboratory (PNNL)P.O. Box 999RichlandWA99352USA
| | - Oliver Y. Gutiérrez
- Institute of Integrated CatalysisPacific Northwest National Laboratory (PNNL)P.O. Box 999RichlandWA99352USA
| | - Johannes A. Lercher
- Institute of Integrated CatalysisPacific Northwest National Laboratory (PNNL)P.O. Box 999RichlandWA99352USA
- Department of Chemistry and Catalysis Research CenterTechnical University MünchenLichtenbergstrasse 485747MünchenGermany
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44
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Shetty M, Wang H, Chen F, Jaegers N, Liu Y, Camaioni DM, Gutiérrez OY, Lercher JA. Directing the Rate‐Enhancement for Hydronium Ion Catalyzed Dehydration via Organization of Alkanols in Nanoscopic Confinements. Angew Chem Int Ed Engl 2021. [DOI: 10.1002/ange.202009835] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Manish Shetty
- Institute of Integrated Catalysis Pacific Northwest National Laboratory (PNNL) P.O. Box 999 Richland WA 99352 USA
| | - Huamin Wang
- Institute of Integrated Catalysis Pacific Northwest National Laboratory (PNNL) P.O. Box 999 Richland WA 99352 USA
| | - Feng Chen
- Institute of Integrated Catalysis Pacific Northwest National Laboratory (PNNL) P.O. Box 999 Richland WA 99352 USA
| | - Nicholas Jaegers
- Institute of Integrated Catalysis Pacific Northwest National Laboratory (PNNL) P.O. Box 999 Richland WA 99352 USA
| | - Yue Liu
- Department of Chemistry and Catalysis Research Center Technical University München Lichtenbergstrasse 4 85747 München Germany
| | - Donald M. Camaioni
- Institute of Integrated Catalysis Pacific Northwest National Laboratory (PNNL) P.O. Box 999 Richland WA 99352 USA
| | - Oliver Y. Gutiérrez
- Institute of Integrated Catalysis Pacific Northwest National Laboratory (PNNL) P.O. Box 999 Richland WA 99352 USA
| | - Johannes A. Lercher
- Institute of Integrated Catalysis Pacific Northwest National Laboratory (PNNL) P.O. Box 999 Richland WA 99352 USA
- Department of Chemistry and Catalysis Research Center Technical University München Lichtenbergstrasse 4 85747 München Germany
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45
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Zhang W, Cheng G, Haller GL, Liu Y, Lercher JA. Rate Enhancement of Acid-Catalyzed Alcohol Dehydration by Supramolecular Organic Capsules. ACS Catal 2020. [DOI: 10.1021/acscatal.0c03625] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Wei Zhang
- Department of Chemistry and Catalysis Research Center, Technical University of Munich, Lichtenbergstraße 4, 85748 Garching, Germany
| | - Guanhua Cheng
- Department of Chemistry and Catalysis Research Center, Technical University of Munich, Lichtenbergstraße 4, 85748 Garching, Germany
| | - Gary L. Haller
- Department of Chemistry and Catalysis Research Center, Technical University of Munich, Lichtenbergstraße 4, 85748 Garching, Germany
| | - Yue Liu
- Department of Chemistry and Catalysis Research Center, Technical University of Munich, Lichtenbergstraße 4, 85748 Garching, Germany
| | - Johannes A. Lercher
- Department of Chemistry and Catalysis Research Center, Technical University of Munich, Lichtenbergstraße 4, 85748 Garching, Germany
- Institute for Integrated Catalysis, Pacific Northwest National Laboratory, P.O. Box 999, Richland, Washington 99352, United States
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46
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Milakovic L, Hintermeier PH, Liu Q, Shi H, Liu Y, Baráth E, Lercher JA. Towards understanding and predicting the hydronium ion catalyzed dehydration of cyclic-primary, secondary and tertiary alcohols. J Catal 2020. [DOI: 10.1016/j.jcat.2020.08.009] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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47
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Clustering of alkanols confined in chabazite zeolites: Kinetic implications for dehydration of methanol-ethanol mixtures. J Catal 2020. [DOI: 10.1016/j.jcat.2020.07.027] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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48
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Vega-Vila JC, Gounder R. Quantification of Intraporous Hydrophilic Binding Sites in Lewis Acid Zeolites and Consequences for Sugar Isomerization Catalysis. ACS Catal 2020. [DOI: 10.1021/acscatal.0c02918] [Citation(s) in RCA: 18] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Affiliation(s)
- Juan Carlos Vega-Vila
- Charles D. Davidson School of Chemical Engineering, Purdue University, 480 Stadium Mall Drive, West Lafayette, Indiana 47907, United States
| | - Rajamani Gounder
- Charles D. Davidson School of Chemical Engineering, Purdue University, 480 Stadium Mall Drive, West Lafayette, Indiana 47907, United States
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49
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Nastase SAF, Cnudde P, Vanduyfhuys L, De Wispelaere K, Van Speybroeck V, Catlow CRA, Logsdail AJ. Mechanistic Insight into the Framework Methylation of H-ZSM-5 for Varying Methanol Loadings and Si/Al Ratios Using First-Principles Molecular Dynamics Simulations. ACS Catal 2020; 10:8904-8915. [PMID: 32923027 PMCID: PMC7479850 DOI: 10.1021/acscatal.0c01454] [Citation(s) in RCA: 25] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/30/2020] [Revised: 07/08/2020] [Indexed: 11/29/2022]
Abstract
![]()
The
methanol-to-hydrocarbon process is known to proceed autocatalytically
in H-ZSM-5 after an induction period where framework methoxy species
are formed. In this work, we provide mechanistic insight into the
framework methylation within H-ZSM-5 at high methanol loadings and
varying acid site densities by means of first-principles molecular
dynamics simulations. The molecular dynamics simulations show that
stable methanol clusters form in the zeolite pores, and these clusters
commonly deprotonate the active site; however, the cluster size is
dependent on the temperature and acid site density. Enhanced sampling
molecular dynamics simulations give evidence that the barrier for
methanol conversion is significantly affected by the neighborhood
of an additional acid site, suggesting that cooperative effects influence
methanol clustering and reactivity. The insights obtained are important
steps in optimizing the catalyst and engineering the induction period
of the methanol-to-hydrocarbon process.
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Affiliation(s)
- Stefan A. F. Nastase
- Cardiff Catalysis Institute, School of Chemistry, Cardiff University, Cardiff CF10 3AT, U.K
| | - Pieter Cnudde
- Center for Molecular Modeling, Ghent University, Zwijnaarde, Ghent 9000, Belgium
| | - Louis Vanduyfhuys
- Center for Molecular Modeling, Ghent University, Zwijnaarde, Ghent 9000, Belgium
| | | | | | - C. Richard A. Catlow
- Cardiff Catalysis Institute, School of Chemistry, Cardiff University, Cardiff CF10 3AT, U.K
- Department of Chemistry, University College London, 20 Gordon Street, London WC1E 6BT, U.K
- UK Catalysis Hub, Research Complex at Harwell, Science and Technology Facilities Council, Rutherford Appleton Laboratory, Oxford OX11 0FA, U.K
| | - Andrew J. Logsdail
- Cardiff Catalysis Institute, School of Chemistry, Cardiff University, Cardiff CF10 3AT, U.K
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Harris JW, Bates JS, Bukowski BC, Greeley J, Gounder R. Opportunities in Catalysis over Metal-Zeotypes Enabled by Descriptions of Active Centers Beyond Their Binding Site. ACS Catal 2020. [DOI: 10.1021/acscatal.0c02102] [Citation(s) in RCA: 25] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Affiliation(s)
- James W. Harris
- Department of Chemical and Biological Engineering, The University of Alabama, Box 870203, Tuscaloosa, Alabama 35487, United States
| | - Jason S. Bates
- Charles D. Davidson School of Chemical Engineering, Purdue University, 480 Stadium Mall Drive, West Lafayette, Indiana 47907, United States
| | - Brandon C. Bukowski
- Charles D. Davidson School of Chemical Engineering, Purdue University, 480 Stadium Mall Drive, West Lafayette, Indiana 47907, United States
| | - Jeffrey Greeley
- Charles D. Davidson School of Chemical Engineering, Purdue University, 480 Stadium Mall Drive, West Lafayette, Indiana 47907, United States
| | - Rajamani Gounder
- Charles D. Davidson School of Chemical Engineering, Purdue University, 480 Stadium Mall Drive, West Lafayette, Indiana 47907, United States
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