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Abstract
AbstractNanoporous solids are ubiquitous in chemical, energy, and environmental processes, where controlled transport of molecules through the pores plays a crucial role. They are used as sorbents, chromatographic or membrane materials for separations, and as catalysts and catalyst supports. Defined as materials where confinement effects lead to substantial deviations from bulk diffusion, nanoporous materials include crystalline microporous zeotypes and metal–organic frameworks (MOFs), and a number of semi-crystalline and amorphous mesoporous solids, as well as hierarchically structured materials, containing both nanopores and wider meso- or macropores to facilitate transport over macroscopic distances. The ranges of pore sizes, shapes, and topologies spanned by these materials represent a considerable challenge for predicting molecular diffusivities, but fundamental understanding also provides an opportunity to guide the design of new nanoporous materials to increase the performance of transport limited processes. Remarkable progress in synthesis increasingly allows these designs to be put into practice. Molecular simulation techniques have been used in conjunction with experimental measurements to examine in detail the fundamental diffusion processes within nanoporous solids, to provide insight into the free energy landscape navigated by adsorbates, and to better understand nano-confinement effects. Pore network models, discrete particle models and synthesis-mimicking atomistic models allow to tackle diffusion in mesoporous and hierarchically structured porous materials, where multiscale approaches benefit from ever cheaper parallel computing and higher resolution imaging. Here, we discuss synergistic combinations of simulation and experiment to showcase theoretical progress and computational techniques that have been successful in predicting guest diffusion and providing insights. We also outline where new fundamental developments and experimental techniques are needed to enable more accurate predictions for complex systems.
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2
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Sun T, Xu S, Xiao D, Liu Z, Li G, Zheng A, Liu W, Xu Z, Cao Y, Guo Q, Wang N, Wei Y, Liu Z. Water-Induced Structural Dynamic Process in Molecular Sieves under Mild Hydrothermal Conditions: Ship-in-a-Bottle Strategy for Acidity Identification and Catalyst Modification. Angew Chem Int Ed Engl 2020; 59:20672-20681. [PMID: 32706134 DOI: 10.1002/anie.202009648] [Citation(s) in RCA: 16] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/13/2020] [Indexed: 12/15/2022]
Abstract
Water is the most important substance in nature. Imitating the formation of natural materials, molecular sieves have been synthesized under hydrothermal conditions and applied in industry. Herein, we reveal an unforeseen observation on a very special water-induced structural dynamic process of these materials. Dynamic and reversible breaking and forming of T-O-T bonds in silicoaluminophosphate (SAPO) occurs through interactions between gaseous water and the molecular-sieve framework under mild hydrothermal conditions and is confirmed by detection of the incorporation of 17 O from H2 17 O into molecular-sieve framework. Encapsulation of the bulky molecules trimethylphosphine and pyridine (kinetic diameters much larger than the pore size of SAPO-34) into CHA cavities consolidated the water-induced dynamic process. Consequently, new insights into the dynamic features of molecular sieves in water are provided. The ship-in-a-bottle strategy based on these findings also open new fields for fine acidity identification and gives extra boost in shape-selective catalysis.
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Affiliation(s)
- Tantan Sun
- National Engineering Laboratory for Methanol to Olefins, Dalian National Laboratory for Clean Energy, iChEM (Collaborative Innovation Center of Chemistry for Energy Materials), Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian, 116023, China.,University of Chinese Academy of Sciences, Beijing, 100049, China
| | - Shutao Xu
- National Engineering Laboratory for Methanol to Olefins, Dalian National Laboratory for Clean Energy, iChEM (Collaborative Innovation Center of Chemistry for Energy Materials), Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian, 116023, China
| | - Dong Xiao
- State Key Laboratory of Catalysis, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian, 116023, 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, China
| | - Guangchao Li
- 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, China.,University of Chinese Academy of Sciences, Beijing, 100049, 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, China
| | - Wenjuan Liu
- Key Laboratory of Separation Science for Analytical Chemistry, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian, 116023, China.,University of Chinese Academy of Sciences, Beijing, 100049, China
| | - Zhaochao Xu
- Key Laboratory of Separation Science for Analytical Chemistry, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian, 116023, China
| | - Yi Cao
- National Engineering Laboratory for Methanol to Olefins, Dalian National Laboratory for Clean Energy, iChEM (Collaborative Innovation Center of Chemistry for Energy Materials), Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian, 116023, China
| | - Qiang Guo
- National Engineering Laboratory for Methanol to Olefins, Dalian National Laboratory for Clean Energy, iChEM (Collaborative Innovation Center of Chemistry for Energy Materials), Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian, 116023, China
| | - Nan Wang
- National Engineering Laboratory for Methanol to Olefins, Dalian National Laboratory for Clean Energy, iChEM (Collaborative Innovation Center of Chemistry for Energy Materials), Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian, 116023, China.,University of Chinese Academy of Sciences, Beijing, 100049, China
| | - Yingxu Wei
- National Engineering Laboratory for Methanol to Olefins, Dalian National Laboratory for Clean Energy, iChEM (Collaborative Innovation Center of Chemistry for Energy Materials), Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian, 116023, China
| | - Zhongmin Liu
- National Engineering Laboratory for Methanol to Olefins, Dalian National Laboratory for Clean Energy, iChEM (Collaborative Innovation Center of Chemistry for Energy Materials), Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian, 116023, China.,State Key Laboratory of Catalysis, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian, 116023, China.,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, China
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3
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Sun T, Xu S, Xiao D, Liu Z, Li G, Zheng A, Liu W, Xu Z, Cao Y, Guo Q, Wang N, Wei Y, Liu Z. Water‐Induced Structural Dynamic Process in Molecular Sieves under Mild Hydrothermal Conditions: Ship‐in‐a‐Bottle Strategy for Acidity Identification and Catalyst Modification. Angew Chem Int Ed Engl 2020. [DOI: 10.1002/ange.202009648] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/27/2023]
Affiliation(s)
- Tantan Sun
- National Engineering Laboratory for Methanol to Olefins Dalian National Laboratory for Clean Energy, iChEM (Collaborative Innovation Center of Chemistry for Energy Materials) Dalian Institute of Chemical Physics Chinese Academy of Sciences Dalian 116023 China
- University of Chinese Academy of Sciences Beijing 100049 China
| | - Shutao Xu
- National Engineering Laboratory for Methanol to Olefins Dalian National Laboratory for Clean Energy, iChEM (Collaborative Innovation Center of Chemistry for Energy Materials) Dalian Institute of Chemical Physics Chinese Academy of Sciences Dalian 116023 China
| | - Dong Xiao
- State Key Laboratory of Catalysis Dalian Institute of Chemical Physics Chinese Academy of Sciences Dalian 116023 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 China
| | - Guangchao Li
- 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 China
- University of Chinese Academy of Sciences Beijing 100049 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 China
| | - Wenjuan Liu
- Key Laboratory of Separation Science for Analytical Chemistry Dalian Institute of Chemical Physics Chinese Academy of Sciences Dalian 116023 China
- University of Chinese Academy of Sciences Beijing 100049 China
| | - Zhaochao Xu
- Key Laboratory of Separation Science for Analytical Chemistry Dalian Institute of Chemical Physics Chinese Academy of Sciences Dalian 116023 China
| | - Yi Cao
- National Engineering Laboratory for Methanol to Olefins Dalian National Laboratory for Clean Energy, iChEM (Collaborative Innovation Center of Chemistry for Energy Materials) Dalian Institute of Chemical Physics Chinese Academy of Sciences Dalian 116023 China
| | - Qiang Guo
- National Engineering Laboratory for Methanol to Olefins Dalian National Laboratory for Clean Energy, iChEM (Collaborative Innovation Center of Chemistry for Energy Materials) Dalian Institute of Chemical Physics Chinese Academy of Sciences Dalian 116023 China
| | - Nan Wang
- National Engineering Laboratory for Methanol to Olefins Dalian National Laboratory for Clean Energy, iChEM (Collaborative Innovation Center of Chemistry for Energy Materials) Dalian Institute of Chemical Physics Chinese Academy of Sciences Dalian 116023 China
- University of Chinese Academy of Sciences Beijing 100049 China
| | - Yingxu Wei
- National Engineering Laboratory for Methanol to Olefins Dalian National Laboratory for Clean Energy, iChEM (Collaborative Innovation Center of Chemistry for Energy Materials) Dalian Institute of Chemical Physics Chinese Academy of Sciences Dalian 116023 China
| | - Zhongmin Liu
- National Engineering Laboratory for Methanol to Olefins Dalian National Laboratory for Clean Energy, iChEM (Collaborative Innovation Center of Chemistry for Energy Materials) Dalian Institute of Chemical Physics Chinese Academy of Sciences Dalian 116023 China
- State Key Laboratory of Catalysis Dalian Institute of Chemical Physics Chinese Academy of Sciences Dalian 116023 China
- 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 China
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4
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Bryukhanov IA, Rybakov AA, Larin AV. Carbonate-Promoted Drift of Alkali Cations in Small Pore Zeolites: Ab Initio Molecular Dynamics Study of CO 2 in NaKA Zeolite. J Phys Chem Lett 2019; 10:2191-2195. [PMID: 30978026 DOI: 10.1021/acs.jpclett.9b00519] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/09/2023]
Abstract
An effect of deblocking of small size (8R, D8R) pores in zeolites due to cation drift is analyzed by using ab initio molecular dynamics (AIMD) at the PBE-D2/PAW level. The effect of carbonate and hydrocarbonate species on the carbon dioxide uptake in NaKA zeolite is demonstrated. It is shown that a hydrocarbonate or carbonate anion can form strong complexes with K+ cation and withdraw it from the 8R window, so that the probability of CO2 diffusion through 8R increases. For the first time, correlations between cationic and HCO3-/CO32- positions are demonstrated in favor of their significant interaction leading to the cationic drift from 8R windows. This phenomenon explains a nonzero CO2 adsorption in narrow pore zeolites upon high Na/K exchange. In a gas mixture, such deblocking effect reduces the separation factor because of the possible passage of both components through the plane of partly open 8R windows.
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Affiliation(s)
- Ilya A Bryukhanov
- Institute of Mechanics , Lomonosov Moscow State University , Moscow 119192 , Russia
- Mechanical Engineering Research Institute of the RAS , Moscow 119334 , Russia
| | - Andrey A Rybakov
- Department of Chemistry , Lomonosov Moscow State University , Moscow 119991 , Russia
| | - Alexander V Larin
- Department of Chemistry , Lomonosov Moscow State University , Moscow 119991 , Russia
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5
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Mace A, Barthel S, Smit B. Automated Multiscale Approach To Predict Self-Diffusion from a Potential Energy Field. J Chem Theory Comput 2019; 15:2127-2141. [PMID: 30811190 PMCID: PMC6460401 DOI: 10.1021/acs.jctc.8b01255] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
![]()
For large-scale screening studies
there is a need to estimate the
diffusion of gas molecules in nanoporous materials more efficiently
than (brute force) molecular dynamics. In particular for systems with
low diffusion coefficients molecular dynamics can be prohibitively
expensive. An alternative is to compute the hopping rates between
adsorption sites using transition state theory. For large-scale screening
this requires the automatic detection of the transition states between
the adsorption sites along the different diffusion paths. Here an
algorithm is presented that analyzes energy grids for the moving particles.
It detects the energies at which diffusion paths are formed, together
with their directions. This allows for easy identification of nondiffusive
systems. For diffusive systems, it partitions the grid coordinates
assigned to energy basins and transitions states, permitting a transition
state theory based analysis of the diffusion. We test our method on
CH4 diffusion in zeolites, using a standard kinetic Monte
Carlo simulation based on the output of our grid analysis. We find
that it is accurate, fast, and rigorous without limitations to the
geometries of the diffusion tunnels or transition states.
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Affiliation(s)
- Amber Mace
- Laboratory of Molecular Simulation (LSMO), Institut des Sciences et Ingénierie Chimiques, Valais , Ecole Polytechnique Fédérale de Lausanne (EPFL) , Rue de l'Industrie 17 , CH-1951 Sion , Switzerland.,Department of Materials and Environmental Chemistry , Stockholm University , SE-106 91 Stockholm , Sweden
| | - Senja Barthel
- Laboratory of Molecular Simulation (LSMO), Institut des Sciences et Ingénierie Chimiques, Valais , Ecole Polytechnique Fédérale de Lausanne (EPFL) , Rue de l'Industrie 17 , CH-1951 Sion , Switzerland
| | - Berend Smit
- Laboratory of Molecular Simulation (LSMO), Institut des Sciences et Ingénierie Chimiques, Valais , Ecole Polytechnique Fédérale de Lausanne (EPFL) , Rue de l'Industrie 17 , CH-1951 Sion , Switzerland
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6
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Han C, Verploegh RJ, Sholl DS. Assessing the Impact of Point Defects on Molecular Diffusion in ZIF-8 Using Molecular Simulations. J Phys Chem Lett 2018; 9:4037-4044. [PMID: 29936838 DOI: 10.1021/acs.jpclett.8b01749] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
Because defects are ubiquitous in materials, they may play an important role in affecting the performance of materials in practical applications. Here, we investigate the influence of point defects on the diffusion of molecules including water, hydrocarbons, and acid gases in zeolitic imidazolate framework-8 (ZIF-8) using molecular simulations. To make these simulations possible, we introduce a force field that extends previous descriptions of pristine ZIF-8 to include experimentally relevant point defects. In general, the point defects we examined increase the local hopping rate for molecular diffusion, suggesting that low concentrations of these defects will not dominate long-range molecular diffusion in ZIF-8.
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Affiliation(s)
- Chu Han
- School of Chemical & Biomolecular Engineering , Georgia Institute of Technology , Atlanta , Georgia 30332-0100 , United States
- School of Chemistry & Biochemistry , Georgia Institute of Technology , Atlanta , Georgia 30332-0400 , United States
| | - Ross J Verploegh
- School of Chemical & Biomolecular Engineering , Georgia Institute of Technology , Atlanta , Georgia 30332-0100 , United States
| | - David S Sholl
- School of Chemical & Biomolecular Engineering , Georgia Institute of Technology , Atlanta , Georgia 30332-0100 , United States
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7
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Li H, Paolucci C, Schneider WF. Zeolite Adsorption Free Energies from ab Initio Potentials of Mean Force. J Chem Theory Comput 2018; 14:929-938. [PMID: 29232513 DOI: 10.1021/acs.jctc.7b00716] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Abstract
The ability of metal-exchanged zeolites to chemisorb small gas molecules is key to their performance as heterogeneous catalysts and gas-separating agents. Here, we propose and evaluate an ab initio potential of mean force (PMF) method for computing adsorption free energies of representative small molecules to Cu-exchanged sites in SSZ-13 zeolite. We show that Cu ions are mobilized by adsorbates and, as a result, computed free energies are significantly more negative than those obtained from a conventional harmonic oscillator model. PMF-derived free energies are consistent with available experiment and, in many cases, with a dynamics-based quasi-harmonic analysis (QHA). The PMF approach avoids the artificial partitioning of degrees of freedom intrinsic to the QHA. On the basis of the PMF results, we propose a simple correlation to estimate free energies from computed adsorption energies and gas-phase entropies.
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Affiliation(s)
- Hui Li
- Department of Chemical and Biomolecular Engineering, University of Notre Dame , 182 Fitzpatrick Hall, Notre Dame, Indiana 46556, United States
| | - Christopher Paolucci
- Department of Chemical and Biomolecular Engineering, University of Notre Dame , 182 Fitzpatrick Hall, Notre Dame, Indiana 46556, United States
| | - William F Schneider
- Department of Chemical and Biomolecular Engineering, University of Notre Dame , 182 Fitzpatrick Hall, Notre Dame, Indiana 46556, United States
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8
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Guo X, Wu L, Navrotsky A. Thermodynamic evidence of flexibility in H2O and CO2 absorption of transition metal ion exchanged zeolite LTA. Phys Chem Chem Phys 2018; 20:3970-3978. [DOI: 10.1039/c7cp08188j] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Absorption thermodynamics on the framework flexibility of TMI-exchanged zeolite LTA driven by water/CO2 molecules.
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Affiliation(s)
- Xin Guo
- Peter A. Rock Thermochemistry Laboratory and NEAT ORU
- University of California Davis
- Davis
- USA
| | - Lili Wu
- Peter A. Rock Thermochemistry Laboratory and NEAT ORU
- University of California Davis
- Davis
- USA
| | - Alexandra Navrotsky
- Peter A. Rock Thermochemistry Laboratory and NEAT ORU
- University of California Davis
- Davis
- USA
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9
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Wang J, Pan T, Zhang J, Xu X, Yin Q, Han J, Wei M. Hybrid films with excellent oxygen and water vapor barrier properties as efficient anticorrosive coatings. RSC Adv 2018; 8:21651-21657. [PMID: 35539949 PMCID: PMC9080956 DOI: 10.1039/c8ra03819h] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/04/2018] [Accepted: 06/07/2018] [Indexed: 12/16/2022] Open
Abstract
A hydrophobic film is fabricated by spin-coating of Tween 80 modified layered double hydroxide and polydimethylsiloxane alternately, which displays enhanced oxygen/water vapor barrier properties and anti-corrosion behavior toward metal substrates.
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Affiliation(s)
- Jiajie Wang
- State Key Laboratory of Chemical Resource Engineering
- Beijing Advanced Innovation Center for Soft Matter Science and Engineering
- Beijing University of Chemical Technology
- Beijing
- China
| | - Ting Pan
- State Key Laboratory of Chemical Resource Engineering
- Beijing Advanced Innovation Center for Soft Matter Science and Engineering
- Beijing University of Chemical Technology
- Beijing
- China
| | - Jian Zhang
- State Key Laboratory of Chemical Resource Engineering
- Beijing Advanced Innovation Center for Soft Matter Science and Engineering
- Beijing University of Chemical Technology
- Beijing
- China
| | - Xiaozhi Xu
- State Key Laboratory of Chemical Resource Engineering
- Beijing Advanced Innovation Center for Soft Matter Science and Engineering
- Beijing University of Chemical Technology
- Beijing
- China
| | - Qing Yin
- State Key Laboratory of Chemical Resource Engineering
- Beijing Advanced Innovation Center for Soft Matter Science and Engineering
- Beijing University of Chemical Technology
- Beijing
- China
| | - Jingbin Han
- State Key Laboratory of Chemical Resource Engineering
- Beijing Advanced Innovation Center for Soft Matter Science and Engineering
- Beijing University of Chemical Technology
- Beijing
- China
| | - Min Wei
- State Key Laboratory of Chemical Resource Engineering
- Beijing Advanced Innovation Center for Soft Matter Science and Engineering
- Beijing University of Chemical Technology
- Beijing
- China
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10
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Parkes MV, Greathouse JA, Hart DB, Gallis DFS, Nenoff TM. Ab initio molecular dynamics determination of competitive O₂ vs. N₂ adsorption at open metal sites of M₂(dobdc). Phys Chem Chem Phys 2017; 18:11528-38. [PMID: 27063148 DOI: 10.1039/c6cp00768f] [Citation(s) in RCA: 26] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The separation of oxygen from nitrogen using metal-organic frameworks (MOFs) is of great interest for potential pressure-swing adsorption processes for the generation of purified O2 on industrial scales. This study uses ab initio molecular dynamics (AIMD) simulations to examine for the first time the pure-gas and competitive gas adsorption of O2 and N2 in the M2(dobdc) (M = Cr, Mn, Fe) MOF series with coordinatively unsaturated metal centers. Effects of metal, temperature, and gas composition are explored. This unique application of AIMD allows us to study in detail the adsorption/desorption processes and to visualize the process of multiple guests competitively binding to coordinatively unsaturated metal sites of a MOF.
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Affiliation(s)
- Marie V Parkes
- Geochemistry Department, Sandia National Laboratories, Albuquerque, New Mexico 87185-0754, USA
| | - Jeffery A Greathouse
- Geochemistry Department, Sandia National Laboratories, Albuquerque, New Mexico 87185-0754, USA
| | - David B Hart
- Geochemistry Department, Sandia National Laboratories, Albuquerque, New Mexico 87185-0754, USA
| | - Dorina F Sava Gallis
- Nanoscale Sciences Department, Sandia National Laboratories, Albuquerque, New Mexico 87185-1415, USA
| | - Tina M Nenoff
- Physical Chemical and Nano Sciences Center, Sandia National Laboratories, Albuquerque, New Mexico 87185-1415, USA.
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11
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Wang YL, Shimpi MR, Sarman S, Antzutkin ON, Glavatskih S, Kloo L, Laaksonen A. Atomistic Insight into Tetraalkylphosphonium Bis(oxalato)borate Ionic Liquid/Water Mixtures. 2. Volumetric and Dynamic Properties. J Phys Chem B 2016; 120:7446-55. [DOI: 10.1021/acs.jpcb.6b02921] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
| | | | - Sten Sarman
- Department
of Materials and Environmental Chemistry, Arrhenius Laboratory, Stockholm University, SE-106 91 Stockholm, Sweden
| | - Oleg N. Antzutkin
- Chemistry
of Interfaces, Luleå University of Technology, SE-971 87 Luleå, Sweden
| | - Sergei Glavatskih
- Department
of Mechanical Construction and Production, Ghent University, B-9000 Ghent, Belgium
| | | | - Aatto Laaksonen
- Department
of Materials and Environmental Chemistry, Arrhenius Laboratory, Stockholm University, SE-106 91 Stockholm, Sweden
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12
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Chibani S, Chebbi M, Lebègue S, Bučko T, Badawi M. A DFT investigation of the adsorption of iodine compounds and water in H-, Na-, Ag-, and Cu- mordenite. J Chem Phys 2016; 144:244705. [DOI: 10.1063/1.4954659] [Citation(s) in RCA: 48] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Affiliation(s)
- Siwar Chibani
- Université de Lorraine, LCP-A2MC, Institut Jean-Barriol FR2843 CNRS, Rue Victor Demange, 57500 Saint-Avold, France
| | - Mouheb Chebbi
- Université de Lorraine, LCP-A2MC, Institut Jean-Barriol FR2843 CNRS, Rue Victor Demange, 57500 Saint-Avold, France
| | - Sébastien Lebègue
- Laboratoire de Cristallographie, Résonance Magnétique et Modélisations (CRM2, UMR CNRS 7036) Institut Jean Barriol, Université de Lorraine BP 239, Boulevard des Aiguillettes, 54506 Vandoeuvre-lès-Nancy, France
| | - Tomáš Bučko
- Department of Physical and Theoretical Chemistry, Faculty of Natural Sciences, Comenius University in Bratislava, Ilkovičova 6, SK- 84215 Bratislava, Slovakia
- Institute of Inorganic Chemistry, Slovak Academy of Sciences, Dúbravska cesta 9, SK-84236 Bratislava, Slovakia
| | - Michael Badawi
- Université de Lorraine, LCP-A2MC, Institut Jean-Barriol FR2843 CNRS, Rue Victor Demange, 57500 Saint-Avold, France
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13
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Cheung O, Wardecki D, Bacsik Z, Vasiliev P, McCusker LB, Hedin N. Highly selective uptake of carbon dioxide on the zeolite |Na10.2KCs0.8|-LTA – a possible sorbent for biogas upgrading. Phys Chem Chem Phys 2016; 18:16080-3. [PMID: 27251457 DOI: 10.1039/c6cp02443b] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Zeolite |Na10.2KCs0.8|-LTA was found to be a promising adsorbent for applications such as biogas upgrading. The CO2-over-CH4 selectivity was very high (over 1500).
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Affiliation(s)
- Ocean Cheung
- Department of Materials and Environmental Chemistry and Berzelii Center EXSELENT on Porous Materials
- Stockholm University
- SE-106 91 Stockholm
- Sweden
- Nanotechnology and Functional Materials
| | - Dariusz Wardecki
- Department of Materials and Environmental Chemistry and Berzelii Center EXSELENT on Porous Materials
- Stockholm University
- SE-106 91 Stockholm
- Sweden
| | - Zoltán Bacsik
- Department of Materials and Environmental Chemistry and Berzelii Center EXSELENT on Porous Materials
- Stockholm University
- SE-106 91 Stockholm
- Sweden
| | - Petr Vasiliev
- NeoZeo AB
- Villa Bellona
- Universitetsvägen 10A
- SE-106 91 Stockholm
- Sweden
| | - Lynne B. McCusker
- Department of Materials and Environmental Chemistry and Berzelii Center EXSELENT on Porous Materials
- Stockholm University
- SE-106 91 Stockholm
- Sweden
- Laboratory of Crystallography
| | - Niklas Hedin
- Department of Materials and Environmental Chemistry and Berzelii Center EXSELENT on Porous Materials
- Stockholm University
- SE-106 91 Stockholm
- Sweden
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14
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Sun G, Jiang H. Ab initio molecular dynamics with enhanced sampling for surface reaction kinetics at finite temperatures: CH2⇌ CH + H on Ni(111) as a case study. J Chem Phys 2015; 143:234706. [DOI: 10.1063/1.4937483] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Affiliation(s)
- Geng Sun
- Beijing National Laboratory for Molecular Sciences, State Key Laboratory of Rare Earth Materials Chemistry and Application, College of Chemistry and Molecular Engineering, Peking University, 100871 Beijing, China
| | - Hong Jiang
- Beijing National Laboratory for Molecular Sciences, State Key Laboratory of Rare Earth Materials Chemistry and Application, College of Chemistry and Molecular Engineering, Peking University, 100871 Beijing, China
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15
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Mace A, Leetmaa M, Laaksonen A. Temporal Coarse Graining of CO2 and N2 Diffusion in Zeolite NaKA: From the Quantum Scale to the Macroscopic. J Chem Theory Comput 2015; 11:4850-60. [DOI: 10.1021/acs.jctc.5b00401] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Amber Mace
- Department
of Materials and Environmental Chemistry and Berzelii Centre EXSELENT
on Porous Materials, Stockholm University, SE-106 91 Stockholm, Sweden
| | - Mikael Leetmaa
- Department
of Physics and Astronomy, Uppsala University, Box 516, SE-751 20 Uppsala, Sweden
| | - Aatto Laaksonen
- Department
of Materials and Environmental Chemistry and Berzelii Centre EXSELENT
on Porous Materials, Stockholm University, SE-106 91 Stockholm, Sweden
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16
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The role of spatial constraints and entropy in the adsorption and transformation of hydrocarbons catalyzed by zeolites. J Catal 2015. [DOI: 10.1016/j.jcat.2015.04.015] [Citation(s) in RCA: 52] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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17
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Odoh SO, Cramer CJ, Truhlar DG, Gagliardi L. Quantum-Chemical Characterization of the Properties and Reactivities of Metal–Organic Frameworks. Chem Rev 2015; 115:6051-111. [DOI: 10.1021/cr500551h] [Citation(s) in RCA: 206] [Impact Index Per Article: 22.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Affiliation(s)
- Samuel O. Odoh
- Department of Chemistry,
Chemical Theory Center, and Supercomputing Institute, University of Minnesota, Minneapolis, Minnesota 55455-0431, United States
| | - Christopher J. Cramer
- Department of Chemistry,
Chemical Theory Center, and Supercomputing Institute, University of Minnesota, Minneapolis, Minnesota 55455-0431, United States
| | - Donald G. Truhlar
- Department of Chemistry,
Chemical Theory Center, and Supercomputing Institute, University of Minnesota, Minneapolis, Minnesota 55455-0431, United States
| | - Laura Gagliardi
- Department of Chemistry,
Chemical Theory Center, and Supercomputing Institute, University of Minnesota, Minneapolis, Minnesota 55455-0431, United States
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18
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Bryukhanov IA, Rybakov AA, Kovalev VL, Larin AV, Zhidomirov GM. Chemical reduction of the elastic properties of zeolites: a comparison of the formation of carbonate species versus dealumination. Dalton Trans 2015; 44:2703-11. [PMID: 25407761 DOI: 10.1039/c4dt02787f] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/29/2023]
Abstract
The decrease in elastic moduli (Young's, bulk, and shear modulus), the variations in their asymmetries, the Poisson's ratio and the linear compressibility due to carbonate formation in NaX, have been compared to those produced by dealumination of the zeolite HY framework, from the Al-Si-Al fragment positioned in joined 4R rings. All these systems have been considered at the density functional theory (DFT) level using periodic boundary conditions. The representativeness of the models has been checked by comparison of the calculated IR spectra of carbonate and hydrocarbonate species in NaX and of hydroxyl groups in HY with the experimental equivalents. The correlation between the destabilization energy of the systems and the displacement of Na or K cations coordinated to the carbonate or hydrocarbonate species, expressed in terms of Me-O bond elongation, has been confirmed for either one or two carbonate and hydrocarbonate species per unit cell (UC). Finally, a similar reduction in elasticity in FAU zeolites has been observed, due either to carbonate/bicarbonate formation in NaX or as a step in HY dealumination.
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Affiliation(s)
- I A Bryukhanov
- Department of Mechanics and Mathematics, Moscow State University, Leninskie Gory, Moscow, GSP-2, 119992 Russia
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19
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Cheung O, Bacsik Z, Krokidas P, Mace A, Laaksonen A, Hedin N. K+ exchanged zeolite ZK-4 as a highly selective sorbent for CO2. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2014; 30:9682-9690. [PMID: 25072512 DOI: 10.1021/la502897p] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/03/2023]
Abstract
Adsorbents with high capacity and selectivity for adsorption of CO2 are currently being investigated for applications in adsorption-driven separation of CO2 from flue gas. An adsorbent with a particularly high CO2-over-N2 selectivity and high capacity was tested here. Zeolite ZK-4 (Si:Al ∼ 1.3:1), which had the same structure as zeolite A (LTA), showed a high CO2 capacity of 4.85 mmol/g (273 K, 101 kPa) in its Na(+) form. When approximately 26 at. % of the extraframework cations were exchanged for K(+) (NaK-ZK-4), the material still adsorbed a large amount of CO2 (4.35 mmol/g, 273 K, 101 kPa), but the N2 uptake became negligible (<0.03 mmol/g, 273 K, 101 kPa). The majority of the CO2 was physisorbed on zeolite ZK-4 as quantified by consecutive volumetric adsorption measurements. The rate of physisorption of CO2 was fast, even for the highly selective sample. The molecular details of the sorption of CO2 were revealed as well. Computer modeling (Monte Carlo, molecular dynamics simulations, and quantum chemical calculations) allowed us to partly predict the behavior of fully K(+) exchanged zeolite K-ZK-4 upon adsorption of CO2 and N2 for Si:Al ratios up to 4:1. Zeolite K-ZK-4 with Si:Al ratios below 2.5:1 restricted the diffusion of CO2 and N2 across the cages. These simulations could not probe the delicate details of the molecular sieving of CO2 over N2. Still, this study indicates that zeolites NaK-ZK-4 and K-ZK-4 could be appealing adsorbents with high CO2 uptake (∼4 mmol/g, 101 kPa, 273 K) and a kinetically enhanced CO2-over-N2 selectivity.
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Affiliation(s)
- Ocean Cheung
- Department of Materials and Environmental Chemistry, Berzelii Center EXSELENT on Porous Materials, Arrhenius Laboratory, Stockholm University , S-106 91 Stockholm, Sweden
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20
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Piccini G, Sauer J. Effect of Anharmonicity on Adsorption Thermodynamics. J Chem Theory Comput 2014; 10:2479-87. [PMID: 26580768 DOI: 10.1021/ct500291x] [Citation(s) in RCA: 73] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
The effect of anharmonic corrections to the vibrational energies of extended systems is explored. Particular attention is paid to the thermodynamics of adsorption of small molecules on catalytically relevant systems typically affected by anharmonicity. The implemented scheme obtains one-dimensional anharmonic model potentials by distorting the equilibrium structure along the normal modes using both rectilinear (Cartesian) or curvilinear (internal) representations. Only in the latter case, the modes are decoupled also at higher order of the potential and the thermodynamic functions change in the expected directions. The method is applied to calculate ab initio enthalpies, entropies, and Gibbs free energies for the adsorption of methane in acidic chabazite (H-CHA) and on MgO(001) surface. The values obtained for the adsorption of methane in H-CHA (273.15 K, 0.1 MPa, θ = 0.5) are ΔH = -19.3, -TΔS = 11.9, and ΔG = -7.5 kJ/mol. For methane on the MgO(001) (47 K, 1.3 × 10(-14) MPa, θ = 1) ΔH = -14.4, -TΔS = 16.6, and ΔG = 2.1 kJ/mol are obtained. The calculated desorption temperature is 44 K, and the desorption prefactor is 4.26 × 10(12) s(-1). All calculated results agree within chemical accuracy limits with experimental data.
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Affiliation(s)
- GiovanniMaria Piccini
- Institut für Chemie, Humboldt Universität zu Berlin , Unter den Linden 6, 10099 Berlin, Germany
| | - Joachim Sauer
- Institut für Chemie, Humboldt Universität zu Berlin , Unter den Linden 6, 10099 Berlin, Germany
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21
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Cheung O, Hedin N. Zeolites and related sorbents with narrow pores for CO2 separation from flue gas. RSC Adv 2014. [DOI: 10.1039/c3ra48052f] [Citation(s) in RCA: 169] [Impact Index Per Article: 16.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/05/2023] Open
Abstract
Adsorbents with small pores are especially relevant for capturing carbon dioxide at large emission sources.
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Affiliation(s)
- Ocean Cheung
- Department of Materials and Environmental Chemistry
- Berzelii Center EXSELENT on Porous Materials
- Arrhenius Laboratory
- Stockholm University
- Stockholm, Sweden
| | - Niklas Hedin
- Department of Materials and Environmental Chemistry
- Berzelii Center EXSELENT on Porous Materials
- Arrhenius Laboratory
- Stockholm University
- Stockholm, Sweden
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