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Yang H, Ren P, Geng X, Guo W, Lewis JP, Yang Y, Li YW, Wen XD. Bird's-Eye View of the Activity Distribution on a Catalyst Surface via a Machine Learning-Driven Adequate Sampling Algorithm. J Phys Chem Lett 2024; 15:4384-4390. [PMID: 38659407 DOI: 10.1021/acs.jpclett.4c00095] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/26/2024]
Abstract
Rational design of catalysts relies on a deep understanding of the active centers. The structure and activity distribution of active centers on a surface are two of the central issues in catalysis and important targets of theoretical and experimental investigations. Herein, we report a machine learning-driven adequate sampling (MLAS) framework for obtaining a statistical understanding of the chemical environment near catalyst sites. Combined strategies were implemented to achieve highly efficient sampling, including the decomposition of degrees of freedom, stratified sampling, Gaussian process regression, and well-designed constraint optimization. The MLAS framework was applied to the rate-determining step in NH3 synthesis, namely the N2 activation process. We calculated the produced population function, PA, which provides a comprehensive and intuitive understanding of active centers. The MLAS framework can be broadly applied to other more complicated catalyst materials and reaction networks.
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Affiliation(s)
- Hui Yang
- State Key Laboratory of Coal Conversion, Institute of Coal Chemistry, Chinese Academy of Sciences, Taiyuan 030001, China
- National Energy Center for Coal to Liquids, Synfuels China Company, Ltd., Huairou District, Beijing 101400, China
- University of Chinese Academy of Sciences, No. 19A Yuquan Road, Beijing 100049, China
| | - Pengju Ren
- State Key Laboratory of Coal Conversion, Institute of Coal Chemistry, Chinese Academy of Sciences, Taiyuan 030001, China
- National Energy Center for Coal to Liquids, Synfuels China Company, Ltd., Huairou District, Beijing 101400, China
| | - Xiaobin Geng
- National Energy Center for Coal to Liquids, Synfuels China Company, Ltd., Huairou District, Beijing 101400, China
| | - Wenping Guo
- National Energy Center for Coal to Liquids, Synfuels China Company, Ltd., Huairou District, Beijing 101400, China
| | - James Patrick Lewis
- State Key Laboratory of Coal Conversion, Institute of Coal Chemistry, Chinese Academy of Sciences, Taiyuan 030001, China
- National Energy Center for Coal to Liquids, Synfuels China Company, Ltd., Huairou District, Beijing 101400, China
- Hong Kong Quantum AI Laboratory, Ltd., Hong Kong Science Park, Hong Kong 999077, China
| | - Yong Yang
- State Key Laboratory of Coal Conversion, Institute of Coal Chemistry, Chinese Academy of Sciences, Taiyuan 030001, China
- National Energy Center for Coal to Liquids, Synfuels China Company, Ltd., Huairou District, Beijing 101400, China
| | - Yong-Wang Li
- State Key Laboratory of Coal Conversion, Institute of Coal Chemistry, Chinese Academy of Sciences, Taiyuan 030001, China
- National Energy Center for Coal to Liquids, Synfuels China Company, Ltd., Huairou District, Beijing 101400, China
| | - Xiao-Dong Wen
- State Key Laboratory of Coal Conversion, Institute of Coal Chemistry, Chinese Academy of Sciences, Taiyuan 030001, China
- National Energy Center for Coal to Liquids, Synfuels China Company, Ltd., Huairou District, Beijing 101400, China
- University of Chinese Academy of Sciences, No. 19A Yuquan Road, Beijing 100049, China
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2
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Leung DWJ, Laney KR, Kenyon P, Rees NH, Buffet JC, Chen C, O'Hare D. Optimising the acid-base ratio of Mg-Al layered double oxides to enhance CO 2 capture performance: the critical role of calcination conditions. Dalton Trans 2024; 53:6200-6206. [PMID: 38482861 DOI: 10.1039/d4dt00270a] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/04/2024]
Abstract
The effect of calcination conditions (ramp rate, calcination temperature and time) on the formation of Mg2Al layered double oxides (Mg2Al LDOs) as well as their CO2 capture performance, has been systematically investigated. This study explores novel insights into the intricate relationship between these calcination conditions and the resulting surface characteristics, which play a vital role in CO2 capture efficiency. Notably, it is revealed that a rapid ramp rate (100 °C min-1) significantly increases surface area and hydroxyl concentration, leading to a 69% increase in CO2 capture efficiency compared to slower ramp rate. Conversely, short calcination times (1 h) and fast ramp rates (100 °C min-1) are observed to compromise CO2 adsorption due to the presence of dehydrated LDHs. A critical acid : base ratio of 0.37, achieved from a fast ramp rate (100 °C min-1) at 400 °C for 2 h, was found as a key threshold for optimising surface properties, effectively balancing favourable hydroxyl and less favourable strong acid sites, thereby maximizing CO2 capture performance.
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Affiliation(s)
- D W Justin Leung
- Chemistry Research Laboratory, Department of Chemistry, University of Oxford, 12 Mansfield Road, Oxford, OX1 3TA, UK.
| | - Katherine R Laney
- Chemistry Research Laboratory, Department of Chemistry, University of Oxford, 12 Mansfield Road, Oxford, OX1 3TA, UK.
| | - Philip Kenyon
- Chemistry Research Laboratory, Department of Chemistry, University of Oxford, 12 Mansfield Road, Oxford, OX1 3TA, UK.
| | - Nicholas H Rees
- Chemistry Research Laboratory, Department of Chemistry, University of Oxford, 12 Mansfield Road, Oxford, OX1 3TA, UK.
| | - Jean-Charles Buffet
- Chemistry Research Laboratory, Department of Chemistry, University of Oxford, 12 Mansfield Road, Oxford, OX1 3TA, UK.
| | - Chunping Chen
- Chemistry Research Laboratory, Department of Chemistry, University of Oxford, 12 Mansfield Road, Oxford, OX1 3TA, UK.
| | - Dermot O'Hare
- Chemistry Research Laboratory, Department of Chemistry, University of Oxford, 12 Mansfield Road, Oxford, OX1 3TA, UK.
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Wang P, Shi R, Zhao J, Zhang T. Photodriven Methane Conversion on Transition Metal Oxide Catalyst: Recent Progress and Prospects. ADVANCED SCIENCE (WEINHEIM, BADEN-WURTTEMBERG, GERMANY) 2024; 11:e2305471. [PMID: 37882341 PMCID: PMC10885660 DOI: 10.1002/advs.202305471] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/07/2023] [Revised: 09/24/2023] [Indexed: 10/27/2023]
Abstract
Methane as the main component in natural gas is a promising chemical raw material for synthesizing value-added chemicals, but its harsh chemical conversion process often causes severe energy and environment concerns. Photocatalysis provides an attractive path to active and convert methane into various products under mild conditions with clean and sustainable solar energy, although many challenges remain at present. In this review, recent advances in photocatalytic methane conversion are systematically summarized. As the basis of methane conversion, the activation of methane is first elucidated from the structural basis and activation path of methane molecules. The study is committed to categorizing and elucidating the research progress and the laws of the intricate methane conversion reactions according to the target products, including photocatalytic methane partial oxidation, reforming, coupling, combustion, and functionalization. Advanced photocatalytic reactor designs are also designed to enrich the options and reliability of photocatalytic methane conversion performance evaluation. The challenges and prospects of photocatalytic methane conversion are also discussed, which in turn offers guidelines for methane-conversion-related photocatalyst exploration, reaction mechanism investigation, and advanced photoreactor design.
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Affiliation(s)
- Pu Wang
- Key Laboratory of Photochemical Conversion and Optoelectronic Materials, Technical Institute of Physics and Chemistry, Chinese Academy of Sciences, Beijing, 100190, China
- Center of Materials Science and Optoelectronics Engineering, University of Chinese Academy of Sciences, Beijing, 100049, China
| | - Run Shi
- Key Laboratory of Photochemical Conversion and Optoelectronic Materials, Technical Institute of Physics and Chemistry, Chinese Academy of Sciences, Beijing, 100190, China
| | - Jiaqi Zhao
- Key Laboratory of Photochemical Conversion and Optoelectronic Materials, Technical Institute of Physics and Chemistry, Chinese Academy of Sciences, Beijing, 100190, China
| | - Tierui Zhang
- Key Laboratory of Photochemical Conversion and Optoelectronic Materials, Technical Institute of Physics and Chemistry, Chinese Academy of Sciences, Beijing, 100190, China
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4
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Dekermenjian M, Ruediger AP, Merlen A. Raman spectroscopy investigation of magnesium oxide nanoparticles. RSC Adv 2023; 13:26683-26689. [PMID: 37681036 PMCID: PMC10481257 DOI: 10.1039/d3ra04492k] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/05/2023] [Accepted: 08/26/2023] [Indexed: 09/09/2023] Open
Abstract
We investigate Raman spectra (100 cm-1 to 3900 cm-1) of magnesium oxide nanoparticles with nominal sizes of 10 nm, 20 nm, 40 nm, 50 nm, and 300 nm. The crystal structure of MgO prohibits first-order modes and yet, there are numerous reports of relatively intense peaks throughout the literature. Raman signals at approximately 278 cm-1 and 445 cm-1 that were attributed to MgO nanoparticles by previous authors are shown to belong to layers of Mg(OH)2 formed on the surface of MgO nanoparticles. Through an annealing process at 400 °C in an O2 atmosphere, we observe that modes in the 3700 cm-1 spectral region, which are a signature of OH groups, disappear together with modes at 278 cm-1 and 445 cm-1, thus establishing a necessary criterion to associate all of these peaks to the presence of OH groups on the surface.
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5
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Concurrent production and purification of glycolic acid from mixed esters via selective hydrolysis reactions catalyzed and thermodynamically promoted by MgO. Sep Purif Technol 2023. [DOI: 10.1016/j.seppur.2022.122979] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
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Gao W, Xiao J, Wang Q, Li S, Vasiliades MA, Huang L, Gao Y, Jiang Q, Niu Y, Zhang B, Liu Y, He H, Efstathiou AM. Unravelling the Mechanism of Intermediate-Temperature CO 2 Interaction with Molten-NaNO 3 -Salt-Promoted MgO. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2022; 34:e2106677. [PMID: 34729827 DOI: 10.1002/adma.202106677] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/24/2021] [Revised: 10/29/2021] [Indexed: 06/13/2023]
Abstract
The optimization of MgO-based adsorbents as advanced CO2 -capture materials is predominantly focused on their molten-salt modification, for which theoretical and experimental contributions provide great insights for their high CO2 -capture performance. The underlying mechanism of the promotion effect of the molten salt on CO2 capture, however, is a topic of controversy. Herein, advanced experimental characterization techniques, including in situ environmental transmission electron microscopy (eTEM) and CO2 chemisorption by diffuse-reflectance infrared Fourier transform spectroscopy (DRIFTS), transient 18 O-isotopic exchange, and density functional theory (DFT), are employed to elucidate the mechanism of the CO2 interaction with molten-salt-modified MgO in the 250-400 °C range. Herein, eTEM studies using low (2-3 mbar) and high (700 mbar) CO2 pressures illustrate the dynamic evolution of the molten NaNO3 salt promoted and unpromoted MgO carbonation with high magnification (<50 nm). The formation of 18 O-NaNO3 (use of 18 O2 ) and C16 O18 O following CO2 interaction, verifies the proposed reaction path: conversion of NO3 - (NO3 - → NO2 + + O2- ), adsorption of NO2 + on MgO with significant weakening of CO2 adsorption strength, and formation of [Mg2+ … O2- ] ion pairs preventing the development of an impermeable MgCO3 shell, which largely increases the rate of bulk MgO carbonation.
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Affiliation(s)
- Wanlin Gao
- College of Environmental Science and Engineering, Beijing Forestry University, 35 Qinghua East Road, Beijing, 100083, P. R. China
| | - Jiewen Xiao
- College of Environmental Science and Engineering, Beijing Forestry University, 35 Qinghua East Road, Beijing, 100083, P. R. China
| | - Qiang Wang
- College of Environmental Science and Engineering, Beijing Forestry University, 35 Qinghua East Road, Beijing, 100083, P. R. China
| | - Shiyan Li
- Dalian National Laboratory for Clean Energy, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian, 116023, P. R. China
| | - Michalis A Vasiliades
- Chemistry Department, Heterogeneous Catalysis Lab, University of Cyprus, 1 University Ave., University Campus, Nicosia, 2109, Cyprus
| | - Liang Huang
- College of Environmental Science and Engineering, Beijing Forestry University, 35 Qinghua East Road, Beijing, 100083, P. R. China
| | - Yanshan Gao
- College of Environmental Science and Engineering, Beijing Forestry University, 35 Qinghua East Road, Beijing, 100083, P. R. China
| | - Qian Jiang
- Dalian National Laboratory for Clean Energy, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian, 116023, P. R. China
| | - Yiming Niu
- Shenyang National Laboratory for Materials Science (SYNL), Institute of Metal Research, Chinese Academy of Science, Shenyang, 110016, P. R. China
| | - Bingsen Zhang
- Shenyang National Laboratory for Materials Science (SYNL), Institute of Metal Research, Chinese Academy of Science, Shenyang, 110016, P. R. China
| | - Yuefeng Liu
- Dalian National Laboratory for Clean Energy, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian, 116023, P. R. China
| | - Hong He
- Laboratory of Atmospheric Environment and Pollution Control, Research Center for EcoEnvironmental Sciences, Chinese Academy of Sciences, Beijing, 100085, P. R. China
| | - Angelos M Efstathiou
- Chemistry Department, Heterogeneous Catalysis Lab, University of Cyprus, 1 University Ave., University Campus, Nicosia, 2109, Cyprus
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Kurosawa R, Takeuchi M, Ryu J. Fourier-transform infrared and X-ray diffraction analyses of the hydration reaction of pure magnesium oxide and chemically modified magnesium oxide. RSC Adv 2021; 11:24292-24311. [PMID: 35479034 PMCID: PMC9039418 DOI: 10.1039/d1ra04290d] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/03/2021] [Accepted: 07/05/2021] [Indexed: 11/21/2022] Open
Abstract
The magnesium hydroxide/magnesium oxide (Mg(OH)2/MgO) system is a promising chemical heat storage system that utilizes unused heat at the temperature range of 200–500 °C. We have previously reported that the addition of lithium chloride (LiCl) and/or lithium hydroxide (LiOH) promotes the dehydration of Mg(OH)2. The results revealed that LiOH primarily catalyzed the dehydration of the surface of Mg(OH)2, while LiCl promoted the dehydration of bulk Mg(OH)2. However, the roles of Li compounds in the hydration of MgO have not been discussed in detail. X-ray diffraction (XRD) and Fourier-transform infrared (FT-IR) techniques were used to analyze the effects of adding the Li compounds. The results revealed that the addition of LiOH promoted the diffusion of water into the MgO bulk phase and the addition of LiCl promoted the hydration of the MgO bulk phase. It was also observed that the concentration (number) of OH− affected hydration. The mechanism of hydration of pure and LiCl- (or LiOH)-added MgO has also been discussed. The effect of LiCl and LiOH on the hydration of MgO was investigated by XRD and FT-IR measurements, which can help to identify dopants that can effectively catalyze the Mg(OH)2 dehydration and MgO hydration processes.![]()
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Affiliation(s)
- Ryo Kurosawa
- Graduate School of Engineering, Chiba University 1-33, Yayoi-cho, Inage-ku Chiba Japan
| | - Masato Takeuchi
- Department of Applied Chemistry, Graduate School of Engineering, Osaka Prefecture University 1-1, Gaku-en-cho, Naka-ku Sakai Osaka 599-8531 Japan
| | - Junichi Ryu
- Graduate School of Engineering, Chiba University 1-33, Yayoi-cho, Inage-ku Chiba Japan
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8
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Sainna MA, Nanavati S, Black C, Smith L, Mugford K, Jenkins H, Douthwaite M, Dummer NF, Catlow CRA, Hutchings GJ, Taylor SH, Logsdail AJ, Willock DJ. A combined periodic DFT and QM/MM approach to understand the radical mechanism of the catalytic production of methanol from glycerol. Faraday Discuss 2021; 229:108-130. [PMID: 33650598 DOI: 10.1039/d0fd00005a] [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
The production of methanol from glycerol over a basic oxide, such as MgO, using high reaction temperatures (320 °C) is a promising new approach to improving atom efficiency in the production of biofuels. The mechanism of this reaction involves the homolytic cleavage of the C3 feedstock, or its dehydration product hydroxyacetone, to produce a hydroxymethyl radical species which can then abstract an H atom from other species. Obtaining a detailed reaction mechanism for this type of chemistry is difficult due to the large number of products present when the system is operated at high conversions. In this contribution we show how DFT based modelling studies can provide new insights into likely reaction pathways, in particular the source of H atoms for the final step of converting hydroxymethyl radicals to methanol. We show that water is unlikely to be important in this stage of the process, C-H bonds of C2 and C3 species can give an energetically favourable pathway and that the disproportionation of hydroxymethyl radicals to methanol and formaldehyde produces a very favourable route. Experimental analysis of reaction products confirms the presence of formaldehyde. The calculations presented in this work also provide new insight into the role of the catalyst surface in the reaction showing that the base sites of the MgO(100) are able to deprotonate hydroxymethyl radicals but not methanol itself. In carrying out the calculations we also show how periodic DFT and QM/MM approaches can be used together to obtain a rounded picture of molecular adsorption to surfaces and homolytic bond cleavage which are both central to the reactions studied.
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Affiliation(s)
- Mala A Sainna
- Cardiff Catalysis Institute, School of Chemistry, Cardiff University, Cardiff, CF10 3AT, UK.
| | - Sachin Nanavati
- Cardiff Catalysis Institute, School of Chemistry, Cardiff University, Cardiff, CF10 3AT, UK.
| | - Constance Black
- Cardiff Catalysis Institute, School of Chemistry, Cardiff University, Cardiff, CF10 3AT, UK.
| | - Louise Smith
- Cardiff Catalysis Institute, School of Chemistry, Cardiff University, Cardiff, CF10 3AT, UK.
| | - Karl Mugford
- Cardiff Catalysis Institute, School of Chemistry, Cardiff University, Cardiff, CF10 3AT, UK.
| | - Harry Jenkins
- Cardiff Catalysis Institute, School of Chemistry, Cardiff University, Cardiff, CF10 3AT, UK.
| | - Mark Douthwaite
- Cardiff Catalysis Institute, School of Chemistry, Cardiff University, Cardiff, CF10 3AT, UK.
| | - Nicholas F Dummer
- Cardiff Catalysis Institute, School of Chemistry, Cardiff University, Cardiff, CF10 3AT, UK.
| | - C Richard A Catlow
- Cardiff Catalysis Institute, School of Chemistry, Cardiff University, Cardiff, CF10 3AT, UK.
| | - Graham J Hutchings
- Cardiff Catalysis Institute, School of Chemistry, Cardiff University, Cardiff, CF10 3AT, UK.
| | - Stuart H Taylor
- Cardiff Catalysis Institute, School of Chemistry, Cardiff University, Cardiff, CF10 3AT, UK.
| | - Andrew J Logsdail
- Cardiff Catalysis Institute, School of Chemistry, Cardiff University, Cardiff, CF10 3AT, UK.
| | - David J Willock
- Cardiff Catalysis Institute, School of Chemistry, Cardiff University, Cardiff, CF10 3AT, UK.
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9
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Li X, Paier W, Paier J. Machine Learning in Computational Surface Science and Catalysis: Case Studies on Water and Metal-Oxide Interfaces. Front Chem 2021; 8:601029. [PMID: 33425857 PMCID: PMC7793815 DOI: 10.3389/fchem.2020.601029] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/31/2020] [Accepted: 10/27/2020] [Indexed: 11/13/2022] Open
Abstract
The goal of many computational physicists and chemists is the ability to bridge the gap between atomistic length scales of about a few multiples of an Ångström (Å), i. e., 10−10 m, and meso- or macroscopic length scales by virtue of simulations. The same applies to timescales. Machine learning techniques appear to bring this goal into reach. This work applies the recently published on-the-fly machine-learned force field techniques using a variant of the Gaussian approximation potentials combined with Bayesian regression and molecular dynamics as efficiently implemented in the Vienna ab initio simulation package, VASP. The generation of these force fields follows active-learning schemes. We apply these force fields to simple oxides such as MgO and more complex reducible oxides such as iron oxide, examine their generalizability, and further increase complexity by studying water adsorption on these metal oxide surfaces. We successfully examined surface properties of pristine and reconstructed MgO and Fe3O4 surfaces. However, the accurate description of water–oxide interfaces by machine-learned force fields, especially for iron oxides, remains a field offering plenty of research opportunities.
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Affiliation(s)
- Xiaoke Li
- Institut für Chemie, Humboldt-Universität zu Berlin, Berlin, Germany
| | - Wolfgang Paier
- Fraunhofer Institute for Telecommunications, Heinrich Hertz Institute HHI, Berlin, Germany
| | - Joachim Paier
- Institut für Chemie, Humboldt-Universität zu Berlin, Berlin, Germany
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Boje A, Taifan WE, Ström H, Bučko T, Baltrusaitis J, Hellman A. First-principles-informed energy span and microkinetic analysis of ethanol catalytic conversion to 1,3-butadiene on MgO. Catal Sci Technol 2021. [DOI: 10.1039/d1cy00419k] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
First-principles-informed models elucidate the impact of energetic and kinetic limitations on selectivity and activity of ethanol conversion to 1,3-butadiene.
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Affiliation(s)
- Astrid Boje
- Department of Physics, Chalmers University of Technology, 412 96 Göteborg, Sweden
| | - William E. Taifan
- Department of Chemical and Biomolecular Engineering, Lehigh University, B336 Iacocca Hall, 111 Research Drive, Bethlehem, PA 18015, USA
| | - Henrik Ström
- Department of Mechanics and Maritime Sciences, Chalmers University of Technology, 412 96 Göteborg, Sweden
| | - Tomáš Bučko
- Department of Physical and Theoretical Chemistry, Faculty of Natural Sciences, Comenius University in Bratislava, Ilkovičova 6, SK-84215, Bratislava, Slovak Republic
- Institute of Inorganic Chemistry, Slovak Academy of Sciences, Dúbravská cesta 9, SK-84236 Bratislava, Slovak Republic
| | - Jonas Baltrusaitis
- Department of Chemical and Biomolecular Engineering, Lehigh University, B336 Iacocca Hall, 111 Research Drive, Bethlehem, PA 18015, USA
| | - Anders Hellman
- Department of Physics, Chalmers University of Technology, 412 96 Göteborg, Sweden
- Competence Centre for Catalysis, Chalmers University of Technology, 412 96 Göteborg, Sweden
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12
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de Souza EF, Pacheco HP, Miyake N, Davis RJ, Toniolo FS. Computational and Experimental Mechanistic Insights into the Ethanol-to-Butanol Upgrading Reaction over MgO. ACS Catal 2020. [DOI: 10.1021/acscatal.0c04616] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Eugenio F. de Souza
- Chemical Engineering Program of COPPE/UFRJ, Federal University of Rio de Janeiro, P.O. Box 68502, CEP 21941-972 Rio de Janeiro, Brazil
| | - Henrique P. Pacheco
- Chemical Engineering Program of COPPE/UFRJ, Federal University of Rio de Janeiro, P.O. Box 68502, CEP 21941-972 Rio de Janeiro, Brazil
| | - Naomi Miyake
- Department of Chemical Engineering, University of Virginia, 102 Engineer’s Way, Charlottesville, 22904-4741 Virginia, United States
| | - Robert J. Davis
- Department of Chemical Engineering, University of Virginia, 102 Engineer’s Way, Charlottesville, 22904-4741 Virginia, United States
| | - Fabio S. Toniolo
- Chemical Engineering Program of COPPE/UFRJ, Federal University of Rio de Janeiro, P.O. Box 68502, CEP 21941-972 Rio de Janeiro, Brazil
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13
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Comparative study on the activities of different MgO surfaces in CO2 activation and hydrogenation. Catal Today 2020. [DOI: 10.1016/j.cattod.2020.03.010] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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14
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Abdulrazzaq HT, Rahmani Chokanlu A, Frederick BG, Schwartz TJ. Reaction Kinetics Analysis of Ethanol Dehydrogenation Catalyzed by MgO–SiO 2. ACS Catal 2020. [DOI: 10.1021/acscatal.0c00811] [Citation(s) in RCA: 20] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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15
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Niedermaier M, Schwab T, Kube P, Zickler GA, Trunschke A, Diwald O. Catalytic activity, water formation, and sintering: Methane activation over Co- and Fe-doped MgO nanocrystals. J Chem Phys 2020; 152:074713. [PMID: 32087664 DOI: 10.1063/1.5138894] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
Microstructure, structure, and compositional homogeneity of metal oxide nanoparticles can change dramatically during catalysis. Considering the different stabilities of cobalt and iron ions in the MgO host lattice [M. Niedermaier et al., J. Phys. Chem. C 123, 25991 (2019)], we employed MgO nanocube powders with or without transition metal admixtures for the oxidative coupling of methane (OCM) reaction to analyze characteristic differences in catalytic activity and sintering behavior. Undoped MgO nanocrystals exhibit the highest C2 selectivity and retain the nanocrystallinity of the starting material after 24 h time on stream. For the Co-Mg-O nanoparticle powder, which exhibits the highest activity and COx selectivity and where OCM-induced coarsening is strongest, we found that the Co2+ ions remain homogeneously distributed over the MgO lattice. Trivalent Fe ions migrate to the surface of Fe-Mg-O nanoparticles where they form a magnesioferrite phase (MgFe2O4) with a characteristic impact on catalytic performance: Fe-Mg-O is initially less selective than MgO despite its lower activity. An increase in C2 selectivity and a decrease in the CO2/CO ratio with time on stream are attributed to the increasing fraction of coarsened particles that become depleted in redox active Fe. Surface water is a by-product of the OCM reaction, favors mass transport across the particle surfaces, and serves as a sintering aid during catalysis. The characteristic changes in size and morphology of MgO, Co-doped, and Fe-doped MgO particles can be consistently explained by activity and C2 selectivity trends. The original morphology of the nanocubes as a starting material for the OCM reaction does not impact the catalytic activity.
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Affiliation(s)
- Matthias Niedermaier
- Department of Chemistry and Physics of Materials, Paris-Lodron University Salzburg, Jakob-Haringer-Strasse 2a, A-5020 Salzburg, Austria
| | - Thomas Schwab
- Department of Chemistry and Physics of Materials, Paris-Lodron University Salzburg, Jakob-Haringer-Strasse 2a, A-5020 Salzburg, Austria
| | - Pierre Kube
- Department of Inorganic Chemistry, Fritz Haber Institute of the Max Planck Society, Faradayweg 4-6, D-14195 Berlin, Germany
| | - Gregor A Zickler
- Department of Chemistry and Physics of Materials, Paris-Lodron University Salzburg, Jakob-Haringer-Strasse 2a, A-5020 Salzburg, Austria
| | - Annette Trunschke
- Department of Inorganic Chemistry, Fritz Haber Institute of the Max Planck Society, Faradayweg 4-6, D-14195 Berlin, Germany
| | - Oliver Diwald
- Department of Chemistry and Physics of Materials, Paris-Lodron University Salzburg, Jakob-Haringer-Strasse 2a, A-5020 Salzburg, Austria
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Yan G, Wähler T, Schuster R, Schwarz M, Hohner C, Werner K, Libuda J, Sautet P. Water on Oxide Surfaces: A Triaqua Surface Coordination Complex on Co3O4(111). J Am Chem Soc 2019; 141:5623-5627. [DOI: 10.1021/jacs.9b00898] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Affiliation(s)
- George Yan
- Department of Chemical and Biomolecular Engineering, University of California, Los Angeles, Los Angeles, California 90095, United States
| | - Tobias Wähler
- Lehrstuhl für Physikalische Chemie II, Friedrich-Alexander-Universität Erlangen-Nürnberg, Egerlandstraße 3, D-91058 Erlangen, Germany
| | - Ralf Schuster
- Lehrstuhl für Physikalische Chemie II, Friedrich-Alexander-Universität Erlangen-Nürnberg, Egerlandstraße 3, D-91058 Erlangen, Germany
| | - Matthias Schwarz
- Lehrstuhl für Physikalische Chemie II, Friedrich-Alexander-Universität Erlangen-Nürnberg, Egerlandstraße 3, D-91058 Erlangen, Germany
| | - Chantal Hohner
- Lehrstuhl für Physikalische Chemie II, Friedrich-Alexander-Universität Erlangen-Nürnberg, Egerlandstraße 3, D-91058 Erlangen, Germany
| | - Kristin Werner
- Lehrstuhl für Physikalische Chemie II, Friedrich-Alexander-Universität Erlangen-Nürnberg, Egerlandstraße 3, D-91058 Erlangen, Germany
| | - Jörg Libuda
- Lehrstuhl für Physikalische Chemie II, Friedrich-Alexander-Universität Erlangen-Nürnberg, Egerlandstraße 3, D-91058 Erlangen, Germany
- Erlangen Catalysis Resource Center and Interdisciplinary Center for Interface-Controlled Processes, Friedrich-Alexander-Universität Erlangen-Nürnberg, 91058 Erlangen, Germany
| | - Philippe Sautet
- Department of Chemical and Biomolecular Engineering, University of California, Los Angeles, Los Angeles, California 90095, United States
- Department of Chemistry and Biochemistry, University of California, Los Angeles, Los Angeles, California 90095, United States
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17
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Anicˇić N, Vukomanović M, Koklicˇ T, Suvorov D. Fewer Defects in the Surface Slows the Hydrolysis Rate, Decreases the ROS Generation Potential, and Improves the Non-ROS Antimicrobial Activity of MgO. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2018; 14:e1800205. [PMID: 29782697 DOI: 10.1002/smll.201800205] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/16/2018] [Revised: 03/21/2018] [Indexed: 06/08/2023]
Abstract
Magnesium oxide (MgO) is recognised as exhibiting a contact-based antibacterial activity. However, a comprehensive study of the impact of atomic-scale surface features on MgO's antibacterial activity is lacking. In this study, the nature and abundance of the native surface defects on different MgO powders are thoroughly investigated. Their impacts on the hydrolysis kinetics, antibacterial activity against Escherichia coli (ATCC 47076), Staphylococcus epidermidis and Pseudomonas aeruginosa and the reactive oxygen species (ROS) generation potential are determined and explained. It is shown that a reduction in the abundance of low-coordinated oxygen atoms on the surface of the MgO improves its resistance to both hydrolysis and antibacterial activity. The ROS generation potential, determined in-situ using a fluorescence microplate assay and electron paramagnetic resonance spectroscopy, is not an inherent property of the studied MgO, rather it is a side product of hydrolysis (only for the most highly defected MgO particles) and/or a consequence of the MgO/bacteria interaction. The evaluation of the mutual correlations of the hydrolysis, the antibacterial activity and the ROS generation, with their origin in the surface defects' peculiarities, led to the conclusion that the acid/base reaction between the MgO surface and the bacterial wall contributes considerably to the MgO's antibacterial activity.
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Affiliation(s)
- Nemanja Anicˇić
- Advanced Materials Department, Jozef Stefan Institute, Jamova 39, 1000, Ljubljana, Slovenia
| | - Marija Vukomanović
- Advanced Materials Department, Jozef Stefan Institute, Jamova 39, 1000, Ljubljana, Slovenia
| | - Tilen Koklicˇ
- Laboratory for Biophysics, Jozef Stefan Institute, Jamova 39, 1000, Ljubljana, Slovenia
| | - Danilo Suvorov
- Advanced Materials Department, Jozef Stefan Institute, Jamova 39, 1000, Ljubljana, Slovenia
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18
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Infrared analysis of methanol adsorption on mixed oxides derived from Mg/Al hydrotalcite catalysts for transesterification reactions. Catal Today 2018. [DOI: 10.1016/j.cattod.2017.05.052] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
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19
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Ramesh S, Devred F, van den Biggelaar L, Debecker DP. Hydrotalcites Promoted by NaAlO2
as Strongly Basic Catalysts with Record Activity in Glycerol Carbonate Synthesis. ChemCatChem 2018. [DOI: 10.1002/cctc.201701726] [Citation(s) in RCA: 31] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Affiliation(s)
- Sreerangappa Ramesh
- Institute of Condensed Matter and Nanoscience; Université Catholique de Louvain Place; Louis Pasteur, 1, Box L4.01.09 1348 Louvain la-Neuve Belgium
| | - François Devred
- Institute of Condensed Matter and Nanoscience; Université Catholique de Louvain Place; Louis Pasteur, 1, Box L4.01.09 1348 Louvain la-Neuve Belgium
| | - Ludivine van den Biggelaar
- Institute of Condensed Matter and Nanoscience; Université Catholique de Louvain Place; Louis Pasteur, 1, Box L4.01.09 1348 Louvain la-Neuve Belgium
| | - Damien P. Debecker
- Institute of Condensed Matter and Nanoscience; Université Catholique de Louvain Place; Louis Pasteur, 1, Box L4.01.09 1348 Louvain la-Neuve Belgium
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20
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21
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Olivier-Bourbigou H, Chizallet C, Dumeignil F, Fongarland P, Geantet C, Granger P, Launay F, Löfberg A, Massiani P, Maugé F, Ouali A, Roger AC, Schuurman Y, Tanchoux N, Uzio D, Jérôme F, Duprez D, Pinel C. The Pivotal Role of Catalysis in France: Selected Examples of Recent Advances and Future Prospects. ChemCatChem 2017. [DOI: 10.1002/cctc.201700426] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Affiliation(s)
| | - Céline Chizallet
- Catalysis and Separation Division; IFP Energies nouvelles; F-69360 Solaize France
| | - Franck Dumeignil
- Unité de Catalyse et Chimie du Solide; Univ. Lille, CNRS, Centrale Lille, ENSCL, Univ. Artois; F-59000 Lille France
| | - Pascal Fongarland
- Laboratoire de Génie des Procédés Catalytiques (LGPC); Univ. Lyon, Université Claude Bernard Lyon 1, CPE, CNRS; F-69616 Villeurbanne France
| | - Christophe Geantet
- Institut de Recherches sur la Catalyse et l'Environnement de Lyon (IRCELYON); Université Claude Bernard Lyon 1, CNRS; F-69626 Villeurbanne France
| | - Pascal Granger
- Unité de Catalyse et Chimie du Solide; Univ. Lille, CNRS, Centrale Lille, ENSCL, Univ. Artois; F-59000 Lille France
| | - Franck Launay
- Laboratoire de Réactivité de Surface (LRS); Sorbonne Universités, UPMC Univ Paris 06, CNRS; F-75005 Paris France
| | - Axel Löfberg
- Unité de Catalyse et Chimie du Solide; Univ. Lille, CNRS, Centrale Lille, ENSCL, Univ. Artois; F-59000 Lille France
| | - Pascale Massiani
- Laboratoire de Réactivité de Surface (LRS); Sorbonne Universités, UPMC Univ Paris 06, CNRS; F-75005 Paris France
| | - Françoise Maugé
- Laboratoire Catalyse et Spectrochimie (LCS); ENSICAEN, CNRS; F-14000 Caen France
| | - Armelle Ouali
- Institut Charles Gerhardt Montpellier (ICGM); Université Montpellier, CNRS; F-34095 Montpellier France
| | - Anne-Cécile Roger
- Institut de Chimie et Procédés pour l'Energie, l'Environnement et la Santé (ICPEES); Université de Strasbourg, CNRS; F-67087 Strasbourg France
| | - Yves Schuurman
- Institut de Recherches sur la Catalyse et l'Environnement de Lyon (IRCELYON); Université Claude Bernard Lyon 1, CNRS; F-69626 Villeurbanne France
| | - Nathalie Tanchoux
- Institut Charles Gerhardt Montpellier (ICGM); Université Montpellier, CNRS; F-34095 Montpellier France
| | - Denis Uzio
- Catalysis and Separation Division; IFP Energies nouvelles; F-69360 Solaize France
| | - François Jérôme
- Institut de Chimie des Milieux et Matériaux de Poitiers (IC2MP); Université de Poitiers, ENSIP, CNRS; F-86073 Poitiers France
| | - Daniel Duprez
- Institut de Chimie des Milieux et Matériaux de Poitiers (IC2MP); Université de Poitiers, ENSIP, CNRS; F-86073 Poitiers France
| | - Catherine Pinel
- Institut de Recherches sur la Catalyse et l'Environnement de Lyon (IRCELYON); Université Claude Bernard Lyon 1, CNRS; F-69626 Villeurbanne France
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22
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Schwach P, Pan X, Bao X. Direct Conversion of Methane to Value-Added Chemicals over Heterogeneous Catalysts: Challenges and Prospects. Chem Rev 2017; 117:8497-8520. [DOI: 10.1021/acs.chemrev.6b00715] [Citation(s) in RCA: 656] [Impact Index Per Article: 93.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Pierre Schwach
- State
Key Laboratory of Catalysis, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian 116023, P.R. China
| | - Xiulian Pan
- State
Key Laboratory of Catalysis, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian 116023, P.R. China
| | - Xinhe Bao
- State
Key Laboratory of Catalysis, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian 116023, P.R. China
- Chemistry
Department, Fudan University, Shanghai 200433, P.R. China
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23
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Fan D, Dong X, Yu Y, Zhang M. A DFT study on the aldol condensation reaction on MgO in the process of ethanol to 1,3-butadiene: understanding the structure–activity relationship. Phys Chem Chem Phys 2017; 19:25671-25682. [DOI: 10.1039/c7cp04502f] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The mechanism of aldol condensation on MgO surfaces with different structures was investigated to illustrate the structure–activity relationship.
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Affiliation(s)
- Dan Fan
- Key Laboratory for Green Chemical Technology of Ministry of Education
- R&D Center for Petrochemical Technology
- Tianjin University
- Tianjin 300072
- China
| | - Xiuqin Dong
- Key Laboratory for Green Chemical Technology of Ministry of Education
- R&D Center for Petrochemical Technology
- Tianjin University
- Tianjin 300072
- China
| | - Yingzhe Yu
- Key Laboratory for Green Chemical Technology of Ministry of Education
- R&D Center for Petrochemical Technology
- Tianjin University
- Tianjin 300072
- China
| | - Minhua Zhang
- Key Laboratory for Green Chemical Technology of Ministry of Education
- R&D Center for Petrochemical Technology
- Tianjin University
- Tianjin 300072
- China
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24
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Armaghan M, Amini MM. Adsorption of diazinon and fenitrothion on nanocrystalline magnesium oxides. ARAB J CHEM 2017. [DOI: 10.1016/j.arabjc.2014.01.002] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022] Open
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25
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26
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EPR and DFT study of the ethylene reaction with O− radicals on the surface of nanocrystalline MgO. RESEARCH ON CHEMICAL INTERMEDIATES 2016. [DOI: 10.1007/s11164-016-2682-9] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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27
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Chu C, Zhao Y, Li S, Sun Y. Correlation between the acid-base properties of the La2O3 catalyst and its methane reactivity. Phys Chem Chem Phys 2016; 18:16509-17. [PMID: 27265027 DOI: 10.1039/c6cp02459a] [Citation(s) in RCA: 35] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Density functional theory and coupled cluster theory calculations were carried out to study the effects of the acid-base properties of the La2O3 catalyst on its catalytic activity in the oxidative coupling of methane (OCM) reaction. The La(3+)-O(2-) pair site for CH4 activation is considered as a Lewis acid-Brönsted base pair. Using the Lewis acidity and the Brönsted basicity in the fluoride affinity and proton affinity scales as quantitative measures of the acid-base properties, the energy barrier for CH4 activation at the pair site can be linearly correlated with these acid-base properties. The pair site consisting of a strong Lewis acid La(3+) site and a strong Brönsted base O(2-) site is the most reactive for CH4 activation. In addition, the basicity of the La2O3 catalyst was traditionally measured by temperature-programmed desorption of CO2, but the CO2 chemisorption energy is better regarded as a combined measure of the acid-base properties of the pair site. A linear relationship of superior quality was found between the energy barrier for CH4 activation and the CO2 chemisorption energy, and the pair site favorable for CO2 chemisorption is also more reactive for CH4 activation, leading to the conflicting role of the "basicity" of the La2O3 catalyst in the OCM reaction. The necessity for very high reaction temperatures in the OCM reaction is rationalized by the requirement for the recovery of the most reactive acid-base pair site, which unfortunately also reacts most readily with the byproduct CO2 to form the very stable CO3(2-) species.
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Affiliation(s)
- Changqing Chu
- CAS Key Laboratory of Low-Carbon Conversion Science and Engineering, Shanghai Advanced Research Institute, Chinese Academy of Sciences, 100 Haike Road, Shanghai 201210, China.
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28
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Heterogeneous Partial (amm)Oxidation and Oxidative Dehydrogenation Catalysis on Mixed Metal Oxides. Catalysts 2016. [DOI: 10.3390/catal6020022] [Citation(s) in RCA: 40] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
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29
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Manzano H, Durgun E, López-Arbeloa I, Grossman JC. Insight on Tricalcium Silicate Hydration and Dissolution Mechanism from Molecular Simulations. ACS APPLIED MATERIALS & INTERFACES 2015; 7:14726-14733. [PMID: 26107551 DOI: 10.1021/acsami.5b02505] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
Hydration of mineral surfaces, a critical process for many technological applications, encompasses multiple coupled chemical reactions and topological changes, challenging both experimental characterization and computational modeling. In this work, we used reactive force field simulations to understand the surface properties, hydration, and dissolution of a model mineral, tricalcium silicate. We show that the computed static quantities, i.e., surface energies and water adsorption energies, do not provide useful insight into predict mineral hydration because they do not account for major structural changes at the interface when dynamic effects are included. Upon hydration, hydrogen atoms from dissociated water molecules penetrate into the crystal, forming a disordered calcium silicate hydrate layer that is similar for most of the surfaces despite wide-ranging static properties. Furthermore, the dynamic picture of hydration reveals the hidden role of surface topology, which can lead to unexpected water tessellation that stabilizes the surface against dissolution.
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Affiliation(s)
- Hegoi Manzano
- †Molecular Spectroscopy Laboratory, Physical Chemistry Department, University of the Basque Country, Barrio Sarriena s/n, Leioa, 48940 Bizkaia, Spain
| | - Engin Durgun
- ‡UNAM-National Nanotechnology Research Center and Institute of Materials Science and Nanotechnology, Bilkent University, Ankara 06800, Turkey
| | - Iñigo López-Arbeloa
- †Molecular Spectroscopy Laboratory, Physical Chemistry Department, University of the Basque Country, Barrio Sarriena s/n, Leioa, 48940 Bizkaia, Spain
| | - Jeffrey C Grossman
- §Department of Materials Science and Engineering, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139, United States
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30
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Novais Antunes FP, S. Vaiss V, Tavares SR, Chiaro SS, Souza WF, Leitão AA. Vacancy formation in MoS2 supported on MgO: Electronic and energetic analysis. Chem Phys Lett 2015. [DOI: 10.1016/j.cplett.2015.03.014] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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31
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Védrine JC. Acid–base characterization of heterogeneous catalysts: an up-to-date overview. RESEARCH ON CHEMICAL INTERMEDIATES 2015. [DOI: 10.1007/s11164-015-1982-9] [Citation(s) in RCA: 49] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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32
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Glycerolysis of methyl oleate on MgO: Experimental and theoretical study of the reaction selectivity. J Catal 2015. [DOI: 10.1016/j.jcat.2015.01.001] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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33
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Vitillo JG. Magnesium-based systems for carbon dioxide capture, storage and recycling: from leaves to synthetic nanostructured materials. RSC Adv 2015. [DOI: 10.1039/c5ra02835c] [Citation(s) in RCA: 58] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/29/2023] Open
Abstract
Magnesium is used as leitmotif in this review in order to explore the systems involved in natural and artificial CO2 cycles.
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Affiliation(s)
- Jenny G. Vitillo
- Department of Science and High Technology
- Università dell'Insubria
- 22100 Como
- Italy
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34
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Cornu D, Guesmi H, Laugel G, Krafft JM, Lauron-Pernot H. On the relationship between the basicity of a surface and its ability to catalyze transesterification in liquid and gas phases: the case of MgO. Phys Chem Chem Phys 2015; 17:14168-76. [DOI: 10.1039/c5cp00217f] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
The influence of the basic properties of MgO is not the same for liquid and for gas phase transesterification.
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Affiliation(s)
- Damien Cornu
- Sorbonne Universités
- UPMC Univ Paris 06
- UMR 7197
- Laboratoire de Réactivité de Surface
- Ivry sur Seine
| | - Hazar Guesmi
- Sorbonne Universités
- UPMC Univ Paris 06
- UMR 7197
- Laboratoire de Réactivité de Surface
- Ivry sur Seine
| | - Guillaume Laugel
- Sorbonne Universités
- UPMC Univ Paris 06
- UMR 7197
- Laboratoire de Réactivité de Surface
- Ivry sur Seine
| | - Jean-Marc Krafft
- Sorbonne Universités
- UPMC Univ Paris 06
- UMR 7197
- Laboratoire de Réactivité de Surface
- Ivry sur Seine
| | - Hélène Lauron-Pernot
- Sorbonne Universités
- UPMC Univ Paris 06
- UMR 7197
- Laboratoire de Réactivité de Surface
- Ivry sur Seine
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35
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Petitjean H, Guesmi H, Lauron-Pernot H, Costentin G, Loffreda D, Sautet P, Delbecq F. How Surface Hydroxyls Enhance MgO Reactivity in Basic Catalysis: The Case of Methylbutynol Conversion. ACS Catal 2014. [DOI: 10.1021/cs5010807] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Hugo Petitjean
- Institut
Charles Gerhardt Montpellier, UMR 5253 CNRS-UM2-ENSCM-UM1, Matériaux
Avancés pour la Catalyse et la Santé (MACS), Ecole Nationale Supérieure de Chimie, 8 rue de l’Ecole Normale, F-34296 Montpellier Cedex 5, France
| | - Hazar Guesmi
- Institut
Charles Gerhardt Montpellier, UMR 5253 CNRS-UM2-ENSCM-UM1, Matériaux
Avancés pour la Catalyse et la Santé (MACS), Ecole Nationale Supérieure de Chimie, 8 rue de l’Ecole Normale, F-34296 Montpellier Cedex 5, France
- Sorbonne Universités, UPMC Univ Paris 06,
UMR 7197, Laboratoire de Réactivité de Surface, F-75005 Paris, France
- CNRS-UMR
7197, Laboratoire de Réactivité de Surface, F-75005 Paris, France
| | - Hélène Lauron-Pernot
- Sorbonne Universités, UPMC Univ Paris 06,
UMR 7197, Laboratoire de Réactivité de Surface, F-75005 Paris, France
- CNRS-UMR
7197, Laboratoire de Réactivité de Surface, F-75005 Paris, France
| | - Guylène Costentin
- Sorbonne Universités, UPMC Univ Paris 06,
UMR 7197, Laboratoire de Réactivité de Surface, F-75005 Paris, France
- CNRS-UMR
7197, Laboratoire de Réactivité de Surface, F-75005 Paris, France
| | - David Loffreda
- Université
de Lyon, CNRS-Laboratoire de Chimie UMR 5182, Ecole Normale Supérieure de Lyon, 46 Allée d’Italie, F-69364 Lyon, France
| | - Philippe Sautet
- Université
de Lyon, CNRS-Laboratoire de Chimie UMR 5182, Ecole Normale Supérieure de Lyon, 46 Allée d’Italie, F-69364 Lyon, France
| | - Françoise Delbecq
- Université
de Lyon, CNRS-Laboratoire de Chimie UMR 5182, Ecole Normale Supérieure de Lyon, 46 Allée d’Italie, F-69364 Lyon, France
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36
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Chizallet C, Raybaud P. Density functional theory simulations of complex catalytic materials in reactive environments: beyond the ideal surface at low coverage. Catal Sci Technol 2014. [DOI: 10.1039/c3cy00965c] [Citation(s) in RCA: 48] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Advanced DFT models of complex catalysts, such as amorphous silica–alumina and supported subnanometric platinum particles, bridge the gap between the ideal surface model and the industrial catalyst.
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Affiliation(s)
- Céline Chizallet
- IFP Energies nouvelles
- Direction Catalyse et Séparation
- Rond-point de l'échangeur de Solaize
- , France
| | - Pascal Raybaud
- IFP Energies nouvelles
- Direction Catalyse et Séparation
- Rond-point de l'échangeur de Solaize
- , France
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37
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38
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Rankovic N, Chizallet C, Nicolle A, Da Costa P. Multiscale Modeling of Barium Sulfate Formation from BaO. Ind Eng Chem Res 2013. [DOI: 10.1021/ie401687d] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Affiliation(s)
- Nikola Rankovic
- IFP Energies nouvelles, 1-4 avenue de
Bois-Préau, 92852 Rueil-Malmaison Cedex, France,
- Institut Jean Le Rond d’Alembert
− Université Pierre et Marie Curie − UPMC Paris 6, CNRS UMR 7190, 2 place de la gare de ceinture,
78210 Saint-Cyr-l’Ecole, France, and
| | - Céline Chizallet
- IFP Energies nouvelles,
Rond-point de l’échangeur de Solaize, BP 3, 69360
Solaize, France
| | - André Nicolle
- IFP Energies nouvelles, 1-4 avenue de
Bois-Préau, 92852 Rueil-Malmaison Cedex, France,
| | - Patrick Da Costa
- Institut Jean Le Rond d’Alembert
− Université Pierre et Marie Curie − UPMC Paris 6, CNRS UMR 7190, 2 place de la gare de ceinture,
78210 Saint-Cyr-l’Ecole, France, and
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39
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Vingurt D, Fuks D, Landau MV, Vidruk R, Herskowitz M. Grain boundaries at the surface of consolidated MgO nanocrystals and acid–base functionality. Phys Chem Chem Phys 2013; 15:14783-96. [DOI: 10.1039/c3cp51086g] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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40
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Cornu D, Petitjean H, Costentin G, Guesmi H, Krafft JM, Lauron-Pernot H. Influence of natural adsorbates of magnesium oxide on its reactivity in basic catalysis. Phys Chem Chem Phys 2013; 15:19870-8. [DOI: 10.1039/c3cp53624f] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
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41
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Li J, Croiset E, Ricardez-Sandoval L. Methane dissociation on Ni (100), Ni (111), and Ni (553): A comparative density functional theory study. ACTA ACUST UNITED AC 2012. [DOI: 10.1016/j.molcata.2012.08.016] [Citation(s) in RCA: 86] [Impact Index Per Article: 7.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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42
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Rankovic N, Chizallet C, Nicolle A, Da Costa P. A molecular approach for unraveling surface phase transitions: sulfation of BaO as a model NO(x) trap. Chemistry 2012; 18:10511-4. [PMID: 22807309 DOI: 10.1002/chem.201103950] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/16/2011] [Indexed: 11/07/2022]
Abstract
SO(3) -induced surface reconstruction: The SO(3) molecule as a multidentate ligand induces remarkable surface reconstruction phenomena on alkaline earth oxide surface. By using ab initio computations, adsorption properties are derived to elucidate the thermodynamics of the SO(3) -BaO system.
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Affiliation(s)
- Nikola Rankovic
- IFP Energies nouvelles 1 et 4 avenue de Bois-Préau, 92852 Rueil-Malmaison, France.
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Manzano H, Pellenq RJM, Ulm FJ, Buehler MJ, van Duin ACT. Hydration of calcium oxide surface predicted by reactive force field molecular dynamics. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2012; 28:4187-4197. [PMID: 22316164 DOI: 10.1021/la204338m] [Citation(s) in RCA: 42] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/31/2023]
Abstract
In this work, we present the parametrization of Ca-O/H interactions within the reactive force field ReaxFF, and its application to study the hydration of calcium oxide surface. The force field has been fitted using density functional theory calculations on gas phase calcium-water clusters, calcium oxide bulk and surface properties, calcium hydroxide, bcc and fcc Ca, and proton transfer reactions in the presence of calcium. Then, the reactive force field has been used to study the hydration of the calcium oxide {001} surface with different water contents. Calcium oxide is used as a catalyzer in many applications such as CO(2) sequestration and biodiesel production, and the degree of surface hydroxylation is a key factor in its catalytic performance. The results show that the water dissociates very fast on CaO {001} bare surfaces without any defect or vacancy. The surface structure is maintained up to a certain amount of water, after which the surface undergoes a structural rearrangement, becoming a disordered calcium hydroxyl layer. This transformation is the most probable reason for the CaO catalytic activity decrease.
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Affiliation(s)
- Hegoi Manzano
- Department of Civil and Environmental Engineering, Massachusetts Institute of Technology, Cambridge, MA 02139, United States.
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Wang CM, Wang YD, Dong J, Liu S, Xie ZK. Structure sensitivity of double bond isomerization of butene over MgO surfaces: A periodic DFT study. COMPUT THEOR CHEM 2011. [DOI: 10.1016/j.comptc.2011.07.011] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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Tougerti A, Méthivier C, Cristol S, Tielens F, Che M, Carrier X. Structure of clean and hydrated α-Al2O3 (11̄02) surfaces: implication on surface charge. Phys Chem Chem Phys 2011; 13:6531-43. [DOI: 10.1039/c0cp01295e] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
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Moulin B, Oliviero L, Bazin P, Daturi M, Costentin G, Maugé F. How to determine IR molar absorption coefficients of co-adsorbed species? Application to methanol adsorption for quantification of MgO basic sites. Phys Chem Chem Phys 2011; 13:10797-807. [DOI: 10.1039/c0cp02767g] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
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Menezes AO, Silva PS, Hernández EP, Borges LEP, Fraga MA. Tuning surface basic properties of nanocrystalline MgO by controlling the preparation conditions. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2010; 26:3382-3387. [PMID: 19824684 DOI: 10.1021/la903149y] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/28/2023]
Abstract
Different nanocrystalline magnesias were synthesized by precipitation and hydrothermal treatments of aqueous salt solutions in an attempt to tune their surface basicity. CO(2) was chosen as an acidic molecule to probe the basic sites by both temperature-programmed desorption and infrared spectroscopy. All samples were shown to be crystalline, and except that obtained by nitrate decomposition, they all possessed high surface areas. The oxides presented different basic site distributions, evidencing the significant role of the preparation conditions on tuning the surface basicity: while medium-strength basic centers are dominant in the samples prepared by precipitation aging or hydrothermal treatment, the one obtained by precipitation features a roughly equal concentration of medium-strength and strong centers. Infrared spectra revealed that hydrogen carbonate and monodentate and bidentate carbonates were formed in distinct proportion on all oxides. However, the bidentate complexes were shown to have different thermal stabilities; the more stable species are thought to be formed on acid-base pair centers associated with an anionic vacancy. Distinct morphological and structural characteristics were also observed by high-resolution transmission electron microscopy. It was consistently found that the high-surface area samples are formed by aggregates of nanoparticles (2-5 nm) randomly oriented and with a high concentration of structural defects. These findings allowed us to conclude that the surface heterogeneity promoted during synthesis increases the concentration of basic sites and plays an important role in tuning the basicity of the solids.
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Affiliation(s)
- André O Menezes
- Instituto Nacional de Tecnologia/MCT, Laboratório de Catálise, Av. Venezuela 82/518, Rio de Janeiro/RJ 22081-312, Brazil
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Calatayud M, Ruppert A, Weckhuysen B. Theoretical Study on the Role of Surface Basicity and Lewis Acidity on the Etherification of Glycerol over Alkaline Earth Metal Oxides. Chemistry 2009; 15:10864-70. [DOI: 10.1002/chem.200900487] [Citation(s) in RCA: 55] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
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