1
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Pang K, Ren R, Lv Y, Wang GC. Mechanistic investigation of methanol-to-olefins conversion catalyzed by H-ZSM-5 zeolite: a DFT study. J Mol Model 2024; 30:285. [PMID: 39060819 DOI: 10.1007/s00894-024-06080-2] [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: 04/07/2024] [Accepted: 07/15/2024] [Indexed: 07/28/2024]
Abstract
CONTEXT The mechanisms for the formation of the first C - C bond and lower olefins on methanol to olefins (MTO) conversion on H-ZSM-5 had been focused in dispute. In this paper, density functional theory has been used to study the reaction mechanisms of methanol to olefins on ZSM-5. The configurations of reactants, intermediates, products and transition state of the numerous reactions involved in such a process have been optimized, as well as the elementary reactions related to these configurations were determined by the calculation of corresponding activation energy barriers and reaction heats. Here, two different kinds of the mechanisms were proposed for the formation of dimethyl ether (DME), one involving an associative interaction of two methanol molecules with the zeolite Brønsted acid sites and the other occurring via a surface methoxy species and a methanol molecule. A critical intermediate of the methoxy methyl cation was theoretically verified by the reaction of the methoxy species and dimethyl ether. Besides, it was found that the first intermediates containing a C - C bond were 1,2-dimethoxyethane and 2-methoxy-ethanolare, in which the former was formed from methoxy species with dimethyl ether and the latter was formed from methanol by onium ions((CH3)2O+CH2CH2OCH3), respectively. For the whole reaction mechanism, the results in this paper indicated that the ethene formation is more favorable than propylene formation due to the low activation energy barrier for ethene formation (123.49 vs. 162.09 kJ.mol-1). From these calculations, it would be concluded that ethene is the first alkene product that induces the occurrence of the hydrocarbon pool mechanism. METHODS All the periodic density function theory (DFT) calculations were performed by the Vienna Ab Initio Simulation package (VASP). The interaction between nucleus and valence electron was described using the pseudopotentials found in the projector augmented wave (PAW) method. PBE-D3 was used in the whole DFT calculations and CI-NEB was used to locate transition state.
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Affiliation(s)
- Ke Pang
- Key Laboratory of Coal Science and Technology of Ministry of Education and Shanxi Province, Taiyuan University of Technology, Taiyuan, 030024, Shanxi, China
- Shanxi-Zheda Institute of Advanced Materials and Chemical Engineering, Taiyuan, 030024, Shanxi, China
| | - Ruipeng Ren
- Key Laboratory of Coal Science and Technology of Ministry of Education and Shanxi Province, Taiyuan University of Technology, Taiyuan, 030024, Shanxi, China
- Shanxi-Zheda Institute of Advanced Materials and Chemical Engineering, Taiyuan, 030024, Shanxi, China
| | - Yongkang Lv
- Key Laboratory of Coal Science and Technology of Ministry of Education and Shanxi Province, Taiyuan University of Technology, Taiyuan, 030024, Shanxi, China.
- Shanxi-Zheda Institute of Advanced Materials and Chemical Engineering, Taiyuan, 030024, Shanxi, China.
| | - Gui-Chang Wang
- College of Chemistry, Nankai University, Tianjin, 300071, China.
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2
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Liu K, Shoinkhorova T, You X, Gong X, Zhang X, Chung SH, Ruiz-Martínez J, Gascon J, Dutta Chowdhury A. The synergistic interplay of hierarchy, crystal size, and Ga-promotion in the methanol-to-aromatics process over ZSM-5 zeolites. Dalton Trans 2024; 53:11344-11353. [PMID: 38899920 DOI: 10.1039/d4dt00793j] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/21/2024]
Abstract
In the context of advancing social modernization, the projected shortfall in the demand for renewable aromatic hydrocarbons is expected to widen, influenced by industries like high-end materials, pharmaceuticals, and consumer goods. Sustainable methods for aromatic production from alternative sources, particularly the methanol-to-aromatics (MTA) process using zeolite ZSM-5 and associated with the "methanol economy", have garnered widespread attention. To facilitate this transition, our project consolidates conventional strategies that impact aromatics selectivity-such as using hierarchical zeolites, metallic promoters, or altering zeolite physicochemical properties-into a unified study. Our findings demonstrate the beneficial impact of elongated crystal size and heightened zeolite hierarchy on preferential aromatics selectivity, albeit through distinct mechanisms involving the consumption of shorter olefins. While metallic promoters enhance MTA performance, crystal size, and hierarchy remain pivotal in achieving the maximized aromatics selectivity. This study contributes to a deeper understanding of achieving superior aromatics selectivity through physicochemical modifications in zeolite ZSM-5 during MTA catalysis, thereby advancing the field's comprehension of structure-reactivity relationships.
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Affiliation(s)
- Kun Liu
- College of Chemistry and Molecular Sciences, Wuhan University, Wuhan, Hubei, 430072, PR China.
| | - Tuiana Shoinkhorova
- KAUST Catalysis Center (KCC), King Abdullah University of Science and Technology (KAUST), Thuwal 23955, Saudi Arabia.
| | - Xinyu You
- College of Chemistry and Molecular Sciences, Wuhan University, Wuhan, Hubei, 430072, PR China.
| | - Xuan Gong
- College of Chemistry and Molecular Sciences, Wuhan University, Wuhan, Hubei, 430072, PR China.
- KAUST Catalysis Center (KCC), King Abdullah University of Science and Technology (KAUST), Thuwal 23955, Saudi Arabia.
| | - Xin Zhang
- College of Chemistry and Molecular Sciences, Wuhan University, Wuhan, Hubei, 430072, PR China.
| | - Sang-Ho Chung
- KAUST Catalysis Center (KCC), King Abdullah University of Science and Technology (KAUST), Thuwal 23955, Saudi Arabia.
| | - Javier Ruiz-Martínez
- KAUST Catalysis Center (KCC), King Abdullah University of Science and Technology (KAUST), Thuwal 23955, Saudi Arabia.
| | - Jorge Gascon
- KAUST Catalysis Center (KCC), King Abdullah University of Science and Technology (KAUST), Thuwal 23955, Saudi Arabia.
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3
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Zhou H, Gong X, Abou-Hamad E, Ye Y, Zhang X, Ma P, Gascon J, Chowdhury AD. Tracking the Impact of Koch-Carbonylated Organics During the Zeolite ZSM-5 Catalyzed Methanol-to-Hydrocarbons Process. Angew Chem Int Ed Engl 2024; 63:e202318250. [PMID: 38253820 DOI: 10.1002/anie.202318250] [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: 11/29/2023] [Revised: 01/22/2024] [Accepted: 01/22/2024] [Indexed: 01/24/2024]
Abstract
A methanol-based economy offers an efficient solution to current energy transition challenges, where the zeolite-catalyzed methanol-to-hydrocarbons (MTH) process would be a key enabler in yielding synthetic fuels/chemicals from renewable sources. Despite its original discovery over half a century ago over the zeolite ZSM-5, the practical application of this process in a CO2 -neutral scenario has faced several obstacles. One prominent challenge has been the intricate mechanistic complexities inherent in the MTH process over the zeolite ZSM-5, impeding its widespread adoption. This work takes a significant step forward by providing critical insights that bridge the gap in our understanding of the MTH process. It accomplishes this by connecting the (Koch-carbonylation-led) direct and dual cycle mechanisms, which operate during the early and steady-state phases of MTH catalysis, respectively. To unravel these mechanistic intricacies, we have performed catalytic and operando (i.e., UV/Vis coupled with an online mass spectrometer) and solid-state NMR spectroscopic-based investigations on the MTH process, involving co-feeding methanol and acetone (cf. a key Koch-carbonylated species), including selective isotope-labeling studies. Our iterative research approach revealed that (Koch-)carbonyl group selectively promotes the side-chain mechanism within the arene cycle of the dual cycle mechanism, impacting the preferential formation of BTX fraction (i.e., benzene-toluene-xylene) primarily.
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Affiliation(s)
- Hexun Zhou
- College of Chemistry and Molecular Sciences, Wuhan University, Wuhan, 430072, Hubei, P. R. China
| | - Xuan Gong
- College of Chemistry and Molecular Sciences, Wuhan University, Wuhan, 430072, Hubei, P. R. China
- KAUST Catalysis Center (KCC), King Abdullah University of Science and Technology (KAUST), Thuwal, 23955, Saudi Arabia
| | - Edy Abou-Hamad
- Imaging and Characterization Department, KAUST Core Labs, King Abdullah University of Science and Technology (KAUST), Thuwal, 23955, Saudi Arabia
| | - Yiru Ye
- College of Chemistry and Molecular Sciences, Wuhan University, Wuhan, 430072, Hubei, P. R. China
| | - Xin Zhang
- College of Chemistry and Molecular Sciences, Wuhan University, Wuhan, 430072, Hubei, P. R. China
| | - Pandong Ma
- College of Chemistry and Molecular Sciences, Wuhan University, Wuhan, 430072, Hubei, P. R. China
| | - Jorge Gascon
- KAUST Catalysis Center (KCC), King Abdullah University of Science and Technology (KAUST), Thuwal, 23955, Saudi Arabia
| | - Abhishek Dutta Chowdhury
- College of Chemistry and Molecular Sciences, Wuhan University, Wuhan, 430072, Hubei, P. R. China
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4
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Cordero-Lanzac T, Capel Berdiell I, Airi A, Chung SH, Mancuso JL, Redekop EA, Fabris C, Figueroa-Quintero L, Navarro de Miguel JC, Narciso J, Ramos-Fernandez EV, Svelle S, Van Speybroeck V, Ruiz-Martínez J, Bordiga S, Olsbye U. Transitioning from Methanol to Olefins (MTO) toward a Tandem CO 2 Hydrogenation Process: On the Role and Fate of Heteroatoms (Mg, Si) in MAPO-18 Zeotypes. JACS AU 2024; 4:744-759. [PMID: 38425934 PMCID: PMC10900493 DOI: 10.1021/jacsau.3c00768] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 12/05/2023] [Revised: 01/26/2024] [Accepted: 01/26/2024] [Indexed: 03/02/2024]
Abstract
The tandem CO2 hydrogenation to hydrocarbons over mixed metal oxide/zeolite catalysts (OXZEO) is an efficient way of producing value-added hydrocarbons (platform chemicals and fuels) directly from CO2via methanol intermediate in a single reactor. In this contribution, two MAPO-18 zeotypes (M = Mg, Si) were tested and their performance was compared under methanol-to-olefins (MTO) conditions (350 °C, PCH3OH = 0.04 bar, 6.5 gCH3OH h-1 g-1), methanol/CO/H2 cofeed conditions (350 °C, PCH3OH/PCO/PH2 = 1:7.3:21.7 bar, 2.5 gCH3OH h-1 g-1), and tandem CO2 hydrogenation-to-olefin conditions (350 °C, PCO2/PH2 = 7.5:22.5 bar, 1.4-12.0 gMAPO-18 h molCO2-1). In the latter case, the zeotypes were mixed with a fixed amount of ZnO:ZrO2 catalyst, well-known for the conversion of CO2/H2 to methanol. Focus was set on the methanol conversion activity, product selectivity, and performance stability with time-on-stream. In situ and ex situ Fourier transform infrared spectroscopy (FT-IR), X-ray diffraction (XRD), solid-state nuclear magnetic resonance (NMR), sorption experiments, and ab initio molecular dynamics (AIMD) calculations were performed to correlate material performance with material characteristics. The catalytic tests demonstrated the better performance of MgAPO-18 versus SAPO-18 at MTO conditions, the much superior performance of MgAPO-18 under methanol/CO/H2 cofeeds, and yet the increasingly similar performance of the two materials under tandem conditions upon increasing the zeotype-to-oxide ratio in the tandem catalyst bed. In situ FT-IR measurements coupled with AIMD calculations revealed differences in the MTO initiation mechanism between the two materials. SAPO-18 promoted initial CO2 formation, indicative of a formaldehyde-based decarboxylation mechanism, while CO and ketene were the main constituents of the initiation pool in MgAPO-18, suggesting a decarbonylation mechanism. Under tandem CO2 hydrogenation conditions, the presence of high water concentrations and low methanol partial pressure in the reaction medium led to lower, and increasingly similar, methanol turnover frequencies for the zeotypes. Despite both MAPO-18 zeotypes showing signs of activity loss upon storage due to the interaction of the sites with ambient humidity, they presented a remarkable stability after reaching steady state under tandem reaction conditions and after steaming and regeneration cycles at high temperatures. Water adsorption experiments at room temperature confirmed this observation. The faster activity loss observed in the Mg version is assigned to its harder Mg2+-ion character and the higher concentration of CHA defects in the AEI structure, identified by solid-state NMR and XRD. The low stability of a MgAPO-34 zeotype (CHA structure) upon storage corroborated the relationship between CHA defects and instability.
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Affiliation(s)
- Tomás Cordero-Lanzac
- Department
of Chemistry, SMN Centre for Materials Science and Nanotechnology, University of Oslo, 0371 Oslo, Norway
| | - Izar Capel Berdiell
- Department
of Chemistry, SMN Centre for Materials Science and Nanotechnology, University of Oslo, 0371 Oslo, Norway
| | - Alessia Airi
- Department
of Chemistry, NIS Center and INSTM Reference Center, University of Turin, Turin 10125, Italy
| | - Sang-Ho Chung
- KAUST
Catalysis Center (KCC), King Abdullah University
of Science and Technology, Thuwal 23955-6900, Saudi Arabia
| | - Jenna L. Mancuso
- Center
for Molecular Modeling, Ghent University, Technologiepark 46, B-9052 Zwijnaarde, Belgium
| | - Evgeniy A. Redekop
- Department
of Chemistry, SMN Centre for Materials Science and Nanotechnology, University of Oslo, 0371 Oslo, Norway
| | - Claudia Fabris
- Department
of Chemistry, SMN Centre for Materials Science and Nanotechnology, University of Oslo, 0371 Oslo, Norway
| | - Leidy Figueroa-Quintero
- Inorganic
Chemistry Department, Laboratory of Advanced Materials, University Materials Institute of Alicante, University
of Alicante, Apartado 99, Alicante 03080, Spain
| | - Juan C. Navarro de Miguel
- KAUST
Catalysis Center (KCC), King Abdullah University
of Science and Technology, Thuwal 23955-6900, Saudi Arabia
| | - Javier Narciso
- Inorganic
Chemistry Department, Laboratory of Advanced Materials, University Materials Institute of Alicante, University
of Alicante, Apartado 99, Alicante 03080, Spain
| | - Enrique V. Ramos-Fernandez
- Inorganic
Chemistry Department, Laboratory of Advanced Materials, University Materials Institute of Alicante, University
of Alicante, Apartado 99, Alicante 03080, Spain
| | - Stian Svelle
- Department
of Chemistry, SMN Centre for Materials Science and Nanotechnology, University of Oslo, 0371 Oslo, Norway
| | | | - Javier Ruiz-Martínez
- KAUST
Catalysis Center (KCC), King Abdullah University
of Science and Technology, Thuwal 23955-6900, Saudi Arabia
| | - Silvia Bordiga
- Department
of Chemistry, NIS Center and INSTM Reference Center, University of Turin, Turin 10125, Italy
| | - Unni Olsbye
- Department
of Chemistry, SMN Centre for Materials Science and Nanotechnology, University of Oslo, 0371 Oslo, Norway
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5
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You X, Zhang X, Ye Y, Zhou H, Jiang S, Zhou X, Dutta Chowdhury A. Evaluating the efficacy of zeolites synthesized from natural clay for the methanol-to-hydrocarbon process. Dalton Trans 2023; 52:14390-14399. [PMID: 37781869 DOI: 10.1039/d3dt02131a] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/03/2023]
Abstract
Introducing sustainability into advanced catalytic material design is essential to address growing environmental concerns. Among them, synthesizing inorganic zeolite materials from non-traditional sources (like natural clay) offers several advantages, contributing to sustainability and environmental stewardship. With this objective, we used kaolin to synthesize zeolites with different topologies: SSZ-13 (8-MR with CHA topology), ZSM-5 (10-MR with MFI topology), and Beta (12-MR with BEA topology) (MR: member ring), where a simple and flexible synthetic protocol was adopted without any significant changes. All these zeolites were subjected to catalytic performance evaluation concerning the industrially relevant methanol-to-hydrocarbon (MTH) process. Herein, the kaolin-derived zeolites, especially ZSM-5, led to superior performance and demonstrated enhanced catalyst deactivation-resistant behavior compared to their zeolite counterparts prepared from traditional synthetic routes. Various characterization tools (including under operando conditions) were employed to understand their reactions and deactivation mechanisms. Overall, making zeolites from non-traditional sources presents a pathway for sustainable and environmentally friendly material production, offering benefits such as reduced resource dependence, lower energy consumption, and tailored physicochemical properties beneficial to catalysis. In a broader context, such a research approach contributes to the transition toward a more sustainable and circular economy.
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Affiliation(s)
- Xinyu You
- College of Chemistry and Molecular Sciences, Wuhan University, Wuhan, Hubei, China.
| | - Xin Zhang
- College of Chemistry and Molecular Sciences, Wuhan University, Wuhan, Hubei, China.
| | - Yiru Ye
- College of Chemistry and Molecular Sciences, Wuhan University, Wuhan, Hubei, China.
| | - Hexun Zhou
- College of Chemistry and Molecular Sciences, Wuhan University, Wuhan, Hubei, China.
| | - Shican Jiang
- College of Chemistry and Molecular Sciences, Wuhan University, Wuhan, Hubei, China.
| | - Xue Zhou
- College of Chemistry and Molecular Sciences, Wuhan University, Wuhan, Hubei, China.
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6
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Xing S, Turner S, Fu D, van Vreeswijk S, Liu Y, Xiao J, Oord R, Sann J, Weckhuysen BM. Silicalite-1 Layer Secures the Bifunctional Nature of a CO 2 Hydrogenation Catalyst. JACS AU 2023; 3:1029-1038. [PMID: 37124291 PMCID: PMC10131208 DOI: 10.1021/jacsau.2c00621] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 11/13/2022] [Revised: 03/05/2023] [Accepted: 03/06/2023] [Indexed: 05/03/2023]
Abstract
Close proximity usually shortens the travel distance of reaction intermediates, thus able to promote the catalytic performance of CO2 hydrogenation by a bifunctional catalyst, such as the widely reported In2O3/H-ZSM-5. However, nanoscale proximity (e.g., powder mixing, PM) more likely causes the fast deactivation of the catalyst, probably due to the migration of metals (e.g., In) that not only neutralizes the acid sites of zeolites but also leads to the reconstruction of the In2O3 surface, thus resulting in catalyst deactivation. Additionally, zeolite coking is another potential deactivation factor when dealing with this methanol-mediated CO2 hydrogenation process. Herein, we reported a facile approach to overcome these three challenges by coating a layer of silicalite-1 (S-1) shell outside a zeolite H-ZSM-5 crystal for the In2O3/H-ZSM-5-catalyzed CO2 hydrogenation. More specifically, the S-1 layer (1) restrains the migration of indium that preserved the acidity of H-ZSM-5 and at the same time (2) prevents the over-reduction of the In2O3 phase and (3) improves the catalyst lifetime by suppressing the aromatic cycle in a methanol-to-hydrocarbon conversion step. As such, the activity for the synthesis of C2 + hydrocarbons under nanoscale proximity (PM) was successfully obtained. Moreover, an enhanced performance was observed for the S-1-coated catalyst under microscale proximity (e.g., granule mixing, GM) in comparison to the S-1-coating-free counterpart. This work highlights an effective shielding strategy to secure the bifunctional nature of a CO2 hydrogenation catalyst.
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Affiliation(s)
- Shiyou Xing
- Inorganic
Chemistry and Catalysis Group, Debye Institute
for Nanomaterial Science and Institute for Sustainable and Circular
Chemistry, Utrecht University, Universiteitsweg 99, 3584 CG Utrecht, The Netherlands
- Guangzhou
Institute of Energy Conversion, Chinese Academy of Sciences, CAS Key
Laboratory of Renewable Energy, Guangdong Provincial Key Laboratory
of New and Renewable Energy Research and Development, Guangzhou 510640, Guangdong Province, China
| | - Savannah Turner
- Materials
Chemistry and Catalysis Group, Debye Institute
for Nanomaterial Science, Utrecht University, Universiteitsweg 99, 3584 CG Utrecht, The Netherlands
| | - Donglong Fu
- Inorganic
Chemistry and Catalysis Group, Debye Institute
for Nanomaterial Science and Institute for Sustainable and Circular
Chemistry, Utrecht University, Universiteitsweg 99, 3584 CG Utrecht, The Netherlands
| | - Sophie van Vreeswijk
- Inorganic
Chemistry and Catalysis Group, Debye Institute
for Nanomaterial Science and Institute for Sustainable and Circular
Chemistry, Utrecht University, Universiteitsweg 99, 3584 CG Utrecht, The Netherlands
| | - Yuanshuai Liu
- Inorganic
Chemistry and Catalysis Group, Debye Institute
for Nanomaterial Science and Institute for Sustainable and Circular
Chemistry, Utrecht University, Universiteitsweg 99, 3584 CG Utrecht, The Netherlands
| | - Jiadong Xiao
- Inorganic
Chemistry and Catalysis Group, Debye Institute
for Nanomaterial Science and Institute for Sustainable and Circular
Chemistry, Utrecht University, Universiteitsweg 99, 3584 CG Utrecht, The Netherlands
| | - Ramon Oord
- Inorganic
Chemistry and Catalysis Group, Debye Institute
for Nanomaterial Science and Institute for Sustainable and Circular
Chemistry, Utrecht University, Universiteitsweg 99, 3584 CG Utrecht, The Netherlands
| | - Joachim Sann
- Institute
of Physical Chemistry, Center for Materials
Research (LaMa), Justus-Liebig-University, Gießen Heinrich-Buff-Ring 17, 35392 Gießen, Germany
| | - Bert M. Weckhuysen
- Inorganic
Chemistry and Catalysis Group, Debye Institute
for Nanomaterial Science and Institute for Sustainable and Circular
Chemistry, Utrecht University, Universiteitsweg 99, 3584 CG Utrecht, The Netherlands
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7
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Lv X, Yang M, Song S, Xia M, Li J, Wei Y, Xu C, Song W, Liu J. Boosting Propane Dehydrogenation by the Regioselective Distribution of Subnanometric CoO Clusters in MFI Zeolite Nanosheets. ACS APPLIED MATERIALS & INTERFACES 2023. [PMID: 36898088 DOI: 10.1021/acsami.2c21076] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/18/2023]
Abstract
Direct dehydrogenation of propane (PDH) has already been implemented worldwide in industrial processes to produce value-added propylene. The discovery of earth-abundant and environmentally friendly metal with high activity in C-H cleavage is of great importance. Co species encapsulated within zeolite are highly efficient for catalyzing direct dehydrogenation. However, exploring a promising Co catalyst remains a nontrivial target. Direct control of the regioselective distribution of Co species in the zeolite framework through altering their crystal morphology gives opportunities to modify the metallic Lewis acidic features, thus providing an active and appealing catalyst. Herein, we achieved the regioselective localization of highly active subnanometric CoO clusters in straight channels of siliceous MFI zeolite nanosheets with controllable thickness and aspect ratio. The subnanometric CoO species were identified by different types of spectroscopies, probe measurements, and density functional theory calculations, as the coordination site for the electron-donating propane molecules. The catalyst showed promising catalytic activity for the industrially important PDH with propane conversion of 41.8% and propylene selectivity higher than 95% and was durable during 10 successive regeneration cycles. These findings highlight a green and facile method to synthesize metal-containing zeolitic materials with regioselective metal distribution and also to open up a future perspectives for designing advanced catalysts with integrated advantages of the zeolitic matrix and metal structures.
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Affiliation(s)
- Xintong Lv
- State Key Laboratory of Heavy Oil Processing, China University of Petroleum (Beijing), Beijing 102249, China
| | - Min Yang
- State Key Laboratory of Heavy Oil Processing, China University of Petroleum (Beijing), Beijing 102249, China
| | - Shaojia Song
- State Key Laboratory of Heavy Oil Processing, China University of Petroleum (Beijing), Beijing 102249, China
| | - Mingji Xia
- State Key Laboratory of Heavy Oil Processing, China University of Petroleum (Beijing), Beijing 102249, China
| | - Jun Li
- Beijing National Laboratory for Condensed Matter Physics, Chinese Academy of Sciences, Beijing 100190, China
| | - Yuechang Wei
- State Key Laboratory of Heavy Oil Processing, China University of Petroleum (Beijing), Beijing 102249, China
| | - Chunming Xu
- State Key Laboratory of Heavy Oil Processing, China University of Petroleum (Beijing), Beijing 102249, China
| | - Weiyu Song
- State Key Laboratory of Heavy Oil Processing, China University of Petroleum (Beijing), Beijing 102249, China
| | - Jian Liu
- State Key Laboratory of Heavy Oil Processing, China University of Petroleum (Beijing), Beijing 102249, China
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8
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Gong X, Ye Y, Chowdhury AD. Evaluating the Role of Descriptor- and Spectator-Type Reaction Intermediates During the Early Phases of Zeolite Catalysis. ACS Catal 2022. [DOI: 10.1021/acscatal.2c04600] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/03/2022]
Affiliation(s)
- Xuan Gong
- College of Chemistry and Molecular Sciences, Wuhan University, Wuhan 430072, Hubei People’s Republic of China
| | - Yiru Ye
- College of Chemistry and Molecular Sciences, Wuhan University, Wuhan 430072, Hubei People’s Republic of China
| | - Abhishek Dutta Chowdhury
- College of Chemistry and Molecular Sciences, Wuhan University, Wuhan 430072, Hubei People’s Republic of China
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9
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Microstructural manipulation of MFI-type zeolite films/membranes: Current status and perspectives. J Memb Sci 2022. [DOI: 10.1016/j.memsci.2022.120931] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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10
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Gao Y, Xian X, Bi Y, Liu X, Liu Y, Dong L, Zhao S. Quantitative analysis of framework Al at channel intersections of HZSM-5 zeolite by toluene adsorption–desorption. J Catal 2022. [DOI: 10.1016/j.jcat.2022.06.022] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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11
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Gong X, Çağlayan M, Ye Y, Liu K, Gascon J, Dutta Chowdhury A. First-Generation Organic Reaction Intermediates in Zeolite Chemistry and Catalysis. Chem Rev 2022; 122:14275-14345. [PMID: 35947790 DOI: 10.1021/acs.chemrev.2c00076] [Citation(s) in RCA: 18] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/17/2023]
Abstract
Zeolite chemistry and catalysis are expected to play a decisive role in the next decade(s) to build a more decentralized renewable feedstock-dependent sustainable society owing to the increased scrutiny over carbon emissions. Therefore, the lack of fundamental and mechanistic understanding of these processes is a critical "technical bottleneck" that must be eliminated to maximize economic value and minimize waste. We have identified, considering this objective, that the chemistry related to the first-generation reaction intermediates (i.e., carbocations, radicals, carbenes, ketenes, and carbanions) in zeolite chemistry and catalysis is highly underdeveloped or undervalued compared to other catalysis streams (e.g., homogeneous catalysis). This limitation can often be attributed to the technological restrictions to detect such "short-lived and highly reactive" intermediates at the interface (gas-solid/solid-liquid); however, the recent rise of sophisticated spectroscopic/analytical techniques (including under in situ/operando conditions) and modern data analysis methods collectively compete to unravel the impact of these organic intermediates. This comprehensive review summarizes the state-of-the-art first-generation organic reaction intermediates in zeolite chemistry and catalysis and evaluates their existing challenges and future prospects, to contribute significantly to the "circular carbon economy" initiatives.
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Affiliation(s)
- Xuan Gong
- College of Chemistry and Molecular Sciences, Wuhan University, Wuhan 430072, Hubei P. R. China
| | - Mustafa Çağlayan
- KAUST Catalysis Center (KCC), King Abdullah University of Science and Technology (KAUST), Thuwal 23955, Saudi Arabia
| | - Yiru Ye
- College of Chemistry and Molecular Sciences, Wuhan University, Wuhan 430072, Hubei P. R. China
| | - Kun Liu
- College of Chemistry and Molecular Sciences, Wuhan University, Wuhan 430072, Hubei P. R. China
| | - Jorge Gascon
- KAUST Catalysis Center (KCC), King Abdullah University of Science and Technology (KAUST), Thuwal 23955, Saudi Arabia
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12
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Zeng S, Zhang W, Li J, Lin S, Xu S, Wei Y, Liu Z. Revealing the Roles of Hydrocarbon Pool Mechanism in Ethanol-to-Hydrocarbons Reaction. J Catal 2022. [DOI: 10.1016/j.jcat.2022.07.002] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/17/2022]
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13
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Fu D, Maris JJE, Stanciakova K, Nikolopoulos N, Heijden O, Mandemaker LDB, Siemons ME, Salas Pastene D, Kapitein LC, Rabouw FT, Meirer F, Weckhuysen BM. Unravelling Channel Structure–Diffusivity Relationships in Zeolite ZSM‐5 at the Single‐Molecule Level. Angew Chem Int Ed Engl 2022. [DOI: 10.1002/ange.202114388] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Donglong Fu
- Inorganic Chemistry and Catalysis Debye Institute for Nanomaterials Science Utrecht University 3584 CG Utrecht The Netherlands
| | - J. J. Erik Maris
- Inorganic Chemistry and Catalysis Debye Institute for Nanomaterials Science Utrecht University 3584 CG Utrecht The Netherlands
| | - Katarina Stanciakova
- Inorganic Chemistry and Catalysis Debye Institute for Nanomaterials Science Utrecht University 3584 CG Utrecht The Netherlands
| | - Nikolaos Nikolopoulos
- Inorganic Chemistry and Catalysis Debye Institute for Nanomaterials Science Utrecht University 3584 CG Utrecht The Netherlands
| | - Onno Heijden
- Inorganic Chemistry and Catalysis Debye Institute for Nanomaterials Science Utrecht University 3584 CG Utrecht The Netherlands
| | - Laurens D. B. Mandemaker
- Inorganic Chemistry and Catalysis Debye Institute for Nanomaterials Science Utrecht University 3584 CG Utrecht The Netherlands
| | - Marijn E. Siemons
- Cell Biology Neurobiology and Biophysics Department of Biology Faculty of Science Utrecht University 3584 CG Utrecht The Netherlands
| | - Desiree Salas Pastene
- Cell Biology Neurobiology and Biophysics Department of Biology Faculty of Science Utrecht University 3584 CG Utrecht The Netherlands
| | - Lukas C. Kapitein
- Cell Biology Neurobiology and Biophysics Department of Biology Faculty of Science Utrecht University 3584 CG Utrecht The Netherlands
| | - Freddy T. Rabouw
- Inorganic Chemistry and Catalysis Debye Institute for Nanomaterials Science Utrecht University 3584 CG Utrecht The Netherlands
| | - Florian Meirer
- Inorganic Chemistry and Catalysis Debye Institute for Nanomaterials Science Utrecht University 3584 CG Utrecht The Netherlands
| | - Bert M. Weckhuysen
- Inorganic Chemistry and Catalysis Debye Institute for Nanomaterials Science Utrecht University 3584 CG Utrecht The Netherlands
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14
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Tian H, Jiao J, Zha F, Guo X, Tang X, Chang Y, Chen H. Hydrogenation of CO2 into aromatics over ZnZrO–Zn/HZSM-5 composite catalysts derived from ZIF-8. Catal Sci Technol 2022. [DOI: 10.1039/d1cy01570b] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/17/2023]
Abstract
CO2 hydrogenation to aromatics over a ZnZr8O(350)–Zn/Z5 composite catalyst.
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Affiliation(s)
- Haifeng Tian
- College of Chemistry & Chemical Engineering, Northwest Normal University, Lanzhou 730070, Gansu, China
| | - Jiapeng Jiao
- College of Chemistry & Chemical Engineering, Northwest Normal University, Lanzhou 730070, Gansu, China
| | - Fei Zha
- College of Chemistry & Chemical Engineering, Northwest Normal University, Lanzhou 730070, Gansu, China
| | - Xiaojun Guo
- College of Chemistry & Chemical Engineering, Northwest Normal University, Lanzhou 730070, Gansu, China
| | - Xiaohua Tang
- College of Chemistry & Chemical Engineering, Northwest Normal University, Lanzhou 730070, Gansu, China
| | - Yue Chang
- College of Chemistry & Chemical Engineering, Northwest Normal University, Lanzhou 730070, Gansu, China
- Key Laboratory of Eco-functional Polymer Materials of the Ministry of Education, Lanzhou 730070, Gansu, China
| | - Hongshan Chen
- College of Physics and Electronic Engineering, Northwest Normal University, Lanzhou 730070, Gansu, China
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15
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Ma Z, Zhang Q, Li L, Chen M, Li J, Yu J. Steam-assisted crystallization of highly dispersed nanosized hierarchical zeolites from solid raw materials and their catalytic performance in lactide production. Chem Sci 2022; 13:8052-8059. [PMID: 35919441 PMCID: PMC9278505 DOI: 10.1039/d2sc02823a] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/20/2022] [Accepted: 06/20/2022] [Indexed: 12/25/2022] Open
Abstract
A solvent-free route based on solid raw materials affords higher product yield and lower waste production compared to the traditional hydrothermal synthesis. However, the as-made zeolites usually present blocky aggregation states, limiting their mass transfer and exposure of active sites in catalytic applications. Herein, highly dispersed nanosized hierarchical Beta zeolites with varied Si/Al ratios were prepared via steam-assisted crystallization from ball-milled solid raw materials. Thanks to the sufficient mixing of solid raw materials and favorable migration of solid mixture, nanosized Beta zeolites are obtained that are assembled from nanoparticles (∼15 nm) and possess abundant interconnected intraparticle mesopores. The strategy can also be extended to synthesize nanosized hierarchical ZSM-5 zeolites. The as-prepared Beta zeolite (Si/Al = 10) exhibits outstanding catalytic performance in conversion of lactic acid to lactide (as high as 77.5% in yield). This work provides avenues for simple and cost-efficient synthesis of highly dispersed nanosized hierarchical zeolites, promising their important catalytic applications. A cost-effective synthesis strategy based on steam-assisted crystallization from ball-milled solid raw materials is developed to prepare a highly dispersed nanosized hierarchical Beta zeolite for conversion of lactic acid (LA) to lactide (LT).![]()
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Affiliation(s)
- Zhe Ma
- State Key Laboratory of Inorganic Synthesis and Preparative Chemistry, College of Chemistry, Jilin University, 2699 Qianjin Street, Changchun 130012, P. R. China
| | - Qiang Zhang
- State Key Laboratory of Inorganic Synthesis and Preparative Chemistry, College of Chemistry, Jilin University, 2699 Qianjin Street, Changchun 130012, P. R. China
| | - Lin Li
- Electron Microscopy Center, Jilin University, 2699 Qianjin Street, Changchun 130012, P. R. China
| | - Mengyang Chen
- State Key Laboratory of Inorganic Synthesis and Preparative Chemistry, College of Chemistry, Jilin University, 2699 Qianjin Street, Changchun 130012, P. R. China
| | - Junyan Li
- State Key Laboratory of Inorganic Synthesis and Preparative Chemistry, College of Chemistry, Jilin University, 2699 Qianjin Street, Changchun 130012, P. R. China
- Center for High-resolution Electron Microscopy (CℏEM), School of Physical Science and Technology, ShanghaiTech University, 393 Middle Huaxia Road, Pudong, Shanghai 201210, P. R. China
| | - Jihong Yu
- State Key Laboratory of Inorganic Synthesis and Preparative Chemistry, College of Chemistry, Jilin University, 2699 Qianjin Street, Changchun 130012, P. R. China
- International Center of Future Science, Jilin University, 2699 Qianjin Street, Changchun 130012, P. R. China
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16
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Abstract
Currently, zeolites are one of the most important classes of heterogeneous catalysts in chemical industries owing to their unique structural characteristics such as molecular-scale size/shape-selectivity, heterogenized single catalytic sites in the framework, and excellent stability in harsh industrial processes. However, the microporous structure of conventional zeolite materials limits their applications to small-molecule reactions. To alleviate this problem, mesoporous zeolitic frameworks were developed. In the last few decades, several methods have been developed for the synthesis of mesoporous zeolites; these zeolites have demonstrated greater lifetime and better performance than their bulk microporous counterparts in many catalytic processes, which can be explained by the rapid diffusion of reactant species into the zeolite framework and facile accessibility to bulky molecules through the mesopores. Mesoporous zeolites provide versatile opportunities not only in conventional chemical industries but also in emerging catalysis fields. This review presents many state-of-the-art mesoporous zeolites, discusses various strategies for their synthesis, and details their contributions to catalytic reactions including catalytic cracking, isomerization, alkylation and acylation, alternative fuel synthesis via methanol-to-hydrocarbon (MTH) and Fischer–Tropsch synthesis (FTS) routes, and different fine-chemical syntheses.
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17
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Fu D, Maris JJE, Stanciakova K, Nikolopoulos N, van der Heijden O, Mandemaker LDB, Siemons ME, Salas Pastene D, Kapitein LC, Rabouw FT, Meirer F, Weckhuysen BM. Unravelling Channel Structure-Diffusivity Relationships in Zeolite ZSM-5 at the Single-Molecule Level. Angew Chem Int Ed Engl 2021; 61:e202114388. [PMID: 34788496 PMCID: PMC9299850 DOI: 10.1002/anie.202114388] [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: 10/24/2021] [Indexed: 11/06/2022]
Abstract
The development of improved zeolite materials for applications in separation and catalysis requires understanding of mass transport. Herein, diffusion of single molecules is tracked in the straight and sinusoidal channels of the industrially relevant ZSM-5 zeolites using a combination of single-molecule localization microscopy and uniformly oriented zeolite thin films. Distinct motion behaviors are observed in zeolite channels with the same geometry, suggesting heterogeneous guest-host interactions. Quantification of the diffusion heterogeneities in the sinusoidal and straight channels suggests that the geometry of zeolite channels dictates the mobility and motion behavior of the guest molecules, resulting in diffusion anisotropy. The study of hierarchical zeolites shows that the addition of secondary pore networks primarily enhances the diffusivity of sinusoidal zeolite channels, and thus alleviating the diffusion limitations of microporous zeolites.
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Affiliation(s)
- Donglong Fu
- Inorganic Chemistry and Catalysis, Debye Institute for Nanomaterials Science, Utrecht University, 3584 CG, Utrecht, The Netherlands
| | - J J Erik Maris
- Inorganic Chemistry and Catalysis, Debye Institute for Nanomaterials Science, Utrecht University, 3584 CG, Utrecht, The Netherlands
| | - Katarina Stanciakova
- Inorganic Chemistry and Catalysis, Debye Institute for Nanomaterials Science, Utrecht University, 3584 CG, Utrecht, The Netherlands
| | - Nikolaos Nikolopoulos
- Inorganic Chemistry and Catalysis, Debye Institute for Nanomaterials Science, Utrecht University, 3584 CG, Utrecht, The Netherlands
| | - Onno van der Heijden
- Inorganic Chemistry and Catalysis, Debye Institute for Nanomaterials Science, Utrecht University, 3584 CG, Utrecht, The Netherlands
| | - Laurens D B Mandemaker
- Inorganic Chemistry and Catalysis, Debye Institute for Nanomaterials Science, Utrecht University, 3584 CG, Utrecht, The Netherlands
| | - Marijn E Siemons
- Cell Biology, Neurobiology and Biophysics, Department of Biology, Faculty of Science, Utrecht University, 3584 CG, Utrecht, The Netherlands
| | - Desiree Salas Pastene
- Cell Biology, Neurobiology and Biophysics, Department of Biology, Faculty of Science, Utrecht University, 3584 CG, Utrecht, The Netherlands
| | - Lukas C Kapitein
- Cell Biology, Neurobiology and Biophysics, Department of Biology, Faculty of Science, Utrecht University, 3584 CG, Utrecht, The Netherlands
| | - Freddy T Rabouw
- Inorganic Chemistry and Catalysis, Debye Institute for Nanomaterials Science, Utrecht University, 3584 CG, Utrecht, The Netherlands
| | - Florian Meirer
- Inorganic Chemistry and Catalysis, Debye Institute for Nanomaterials Science, Utrecht University, 3584 CG, Utrecht, The Netherlands
| | - Bert M Weckhuysen
- Inorganic Chemistry and Catalysis, Debye Institute for Nanomaterials Science, Utrecht University, 3584 CG, Utrecht, The Netherlands
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18
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Ramirez A, Gong X, Caglayan M, Nastase SAF, Abou-Hamad E, Gevers L, Cavallo L, Dutta Chowdhury A, Gascon J. Selectivity descriptors for the direct hydrogenation of CO 2 to hydrocarbons during zeolite-mediated bifunctional catalysis. Nat Commun 2021; 12:5914. [PMID: 34625554 PMCID: PMC8501036 DOI: 10.1038/s41467-021-26090-5] [Citation(s) in RCA: 24] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/02/2021] [Accepted: 09/06/2021] [Indexed: 11/16/2022] Open
Abstract
Cascade processes are gaining momentum in heterogeneous catalysis. The combination of several catalytic solids within one reactor has shown great promise for the one-step valorization of C1-feedstocks. The combination of metal-based catalysts and zeolites in the gas phase hydrogenation of CO2 leads to a large degree of product selectivity control, defined mainly by zeolites. However, a great deal of mechanistic understanding remains unclear: metal-based catalysts usually lead to complex product compositions that may result in unexpected zeolite reactivity. Here we present an in-depth multivariate analysis of the chemistry involved in eight different zeolite topologies when combined with a highly active Fe-based catalyst in the hydrogenation of CO2 to olefins, aromatics, and paraffins. Solid-state NMR spectroscopy and computational analysis demonstrate that the hybrid nature of the active zeolite catalyst and its preferred CO2-derived reaction intermediates (CO/ester/ketone/hydrocarbons, i.e., inorganic-organic supramolecular reactive centers), along with 10 MR-zeolite topology, act as descriptors governing the ultimate product selectivity.
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Affiliation(s)
- Adrian Ramirez
- KAUST Catalysis Center (KCC), King Abdullah University of Science and Technology (KAUST), Thuwal, 23955, Saudi Arabia
| | - Xuan Gong
- The Institute for Advanced Studies (IAS), Wuhan University, Wuhan, 430072, Hubei, P. R. China
| | - Mustafa Caglayan
- KAUST Catalysis Center (KCC), King Abdullah University of Science and Technology (KAUST), Thuwal, 23955, Saudi Arabia
| | - Stefan-Adrian F Nastase
- KAUST Catalysis Center (KCC), King Abdullah University of Science and Technology (KAUST), Thuwal, 23955, Saudi Arabia
| | - Edy Abou-Hamad
- Imaging and Characterization Department, KAUST Core Labs, King Abdullah University of Science and Technology (KAUST), Thuwal, 23955, Saudi Arabia
| | - Lieven Gevers
- KAUST Catalysis Center (KCC), King Abdullah University of Science and Technology (KAUST), Thuwal, 23955, Saudi Arabia
| | - Luigi Cavallo
- KAUST Catalysis Center (KCC), King Abdullah University of Science and Technology (KAUST), Thuwal, 23955, Saudi Arabia
| | | | - Jorge Gascon
- KAUST Catalysis Center (KCC), King Abdullah University of Science and Technology (KAUST), Thuwal, 23955, Saudi Arabia.
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19
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Mochizuki K. Absorption of mechanical energy via formation of ice nanotubes in zeolites. Phys Chem Chem Phys 2021; 23:20307-20312. [PMID: 34486614 DOI: 10.1039/d1cp01482j] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Molecular dynamics simulations are carried out for a heterogeneous system composed of bulk water and pure-silica zeolites of the AFI type. My simulations show, for the first time, the spontaneous crystallization of water in hydrophobic zeolite channels by compression, while the water outside remains liquid. The formation of ice nanotubes results in a molecular bumper behavior in the absence of chemical reactions, although the mechanism has been explained by the appearance of silanol defects. In contrast, the same zeolite-water system exhibits a weak shock-absorber behavior at higher temperatures. My study shows that the phase transitions of confined water dramatically change its intrusion/extrusion behavior and alter the energetic performance by varying the temperature alone. The results offer a new perspective for a better design of hydrophobic nanoporous materials utilized with water.
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Affiliation(s)
- Kenji Mochizuki
- Department of Chemistry, Zhejiang University, 148 Tianmushan Road, Hangzhou, Zhejiang, 310028, P. R. China.
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20
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Zachariou A, Hawkins AP, Suwardiyanto, Collier P, Barrow N, Howe RF, Parker SF, Lennon D. New Spectroscopic Insight into the Deactivation of a ZSM‐5 Methanol‐to‐Hydrocarbons Catalyst. ChemCatChem 2021. [DOI: 10.1002/cctc.202100286] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Affiliation(s)
- Andrea Zachariou
- School of Chemistry University of Glasgow Joseph Black Building Glasgow G12 8QQ UK
- UK Catalysis Hub Research Complex at Harwell STFC Rutherford Appleton Laboratory Chilton, Oxon OX11 0FA UK
| | - Alexander P. Hawkins
- School of Chemistry University of Glasgow Joseph Black Building Glasgow G12 8QQ UK
- UK Catalysis Hub Research Complex at Harwell STFC Rutherford Appleton Laboratory Chilton, Oxon OX11 0FA UK
| | - Suwardiyanto
- Department of Chemistry University of Jember Jember 68121 East Java Indonesia
| | - Paul Collier
- Johnson Matthey Plc. Johnson Matthey Technology Centre Blounts Court Sonning Common Reading RG4 9NH UK
| | - Nathan Barrow
- Johnson Matthey Plc. Johnson Matthey Technology Centre Blounts Court Sonning Common Reading RG4 9NH UK
| | - Russell F. Howe
- Department of Chemistry University of Aberdeen Meston Building Aberdeen AB24 3UE UK
| | - Stewart F. Parker
- School of Chemistry University of Glasgow Joseph Black Building Glasgow G12 8QQ UK
- UK Catalysis Hub Research Complex at Harwell STFC Rutherford Appleton Laboratory Chilton, Oxon OX11 0FA UK
- ISIS Neutron and Muon Source ISIS Facility STFC Rutherford Appleton Laboratory Chilton, Oxon OX11 0QX UK
| | - David Lennon
- School of Chemistry University of Glasgow Joseph Black Building Glasgow G12 8QQ UK
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21
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Yu M, Tormene N, Bolshakov A, Mezari B, Liutkova A, Kosinov N, Hensen EJM. Selective methanethiol-to-olefins conversion over HSSZ-13 zeolite. Chem Commun (Camb) 2021; 57:3323-3326. [PMID: 33725046 DOI: 10.1039/d1cc00397f] [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
A methanethiol-to-olefins (MtTO) equivalent of methanol-to-olefins (MTO) chemistry is demonstrated. CH3SH can be converted to ethylene and propylene in a similar manner as CH3OH over SSZ-13 zeolite involving a hydrocarbon pool mechansim. Methylated aromatic intermediates were identified by 13C NMR analysis. Comparison of MtTO and MTO chemistry provides clues about the mechanism of C-C bond formation and catalyst deactivation.
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Affiliation(s)
- Miao Yu
- Laboratory of Inorganic Materials and Catalysis, Department of Chemical Engineering and Chemistry, Eindhoven University of Technology, Het Kranenveld 14, 5600 MB, Eindhoven, The Netherlands.
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