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In situ discovery on the formation of supported silver catalysts for ethylene epoxidation. ADV POWDER TECHNOL 2022. [DOI: 10.1016/j.apt.2022.103732] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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2
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Keijzer PH, van den Reijen JE, Keijzer CJ, de Jong KP, de Jongh PE. Influence of atmosphere, interparticle distance and support on the stability of silver on α-alumina for ethylene epoxidation. J Catal 2022. [DOI: 10.1016/j.jcat.2021.11.016] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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3
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Antonyshyn I, Sichevych O, Ormeci A, Burkhardt U, Rasim K, Titlbach S, Armbrüster M, Schunk SA, Grin Y. Ca-Ag compounds in ethylene epoxidation reaction. SCIENCE AND TECHNOLOGY OF ADVANCED MATERIALS 2019; 20:902-916. [PMID: 31579432 PMCID: PMC6758618 DOI: 10.1080/14686996.2019.1655664] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 06/19/2019] [Revised: 08/02/2019] [Accepted: 08/10/2019] [Indexed: 06/10/2023]
Abstract
The ethylene epoxidation is a challenging catalytic process, and development of active and selective catalyst requires profound understanding of its chemical behaviour under reaction conditions. The systematic study on intermetallic compounds in the Ca-Ag system under ethylene epoxidation conditions clearly shows that the character of the oxidation processes on the surface originates from the atomic interactions in the pristine compound. The Ag-rich compounds Ca2Ag7 and CaAg2 undergo oxidation towards fcc Ag and a complex Ca-based support, whereas equiatomic CaAg and the Ca-rich compounds Ca5Ag3 and Ca3Ag in bulk remain stable under harsh ethylene epoxidation conditions. For the latter presence of water vapour in the gas stream leads to noticeable corrosion. Combining the experimental results with the chemical bonding analysis and first-principles calculations, the relationships among the chemical nature of the compounds, their reactivity and catalytic performance towards epoxidation of ethylene are investigated.
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Affiliation(s)
- Iryna Antonyshyn
- Chemical Metals Science Department, Max-Planck-Institut für Chemische Physik fester Stoffe, Dresden, Germany
| | - Olga Sichevych
- Chemical Metals Science Department, Max-Planck-Institut für Chemische Physik fester Stoffe, Dresden, Germany
| | - Alim Ormeci
- Chemical Metals Science Department, Max-Planck-Institut für Chemische Physik fester Stoffe, Dresden, Germany
| | - Ulrich Burkhardt
- Chemical Metals Science Department, Max-Planck-Institut für Chemische Physik fester Stoffe, Dresden, Germany
| | - Karsten Rasim
- Chemical Metals Science Department, Max-Planck-Institut für Chemische Physik fester Stoffe, Dresden, Germany
| | | | - Marc Armbrüster
- Faculty of Natural Sciences, Institute of Chemistry, Materials for Innovative Energy Concepts, Chemnitz University of Technology, Chemnitz, Germany
| | | | - Yuri Grin
- Chemical Metals Science Department, Max-Planck-Institut für Chemische Physik fester Stoffe, Dresden, Germany
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4
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Lee EJ, Lee J, Lee M, Min HK, Park S, Heui Kim D. Propylene epoxidation by oxygen over tungsten oxide supported on ceria-zirconia. MOLECULAR CATALYSIS 2019. [DOI: 10.1016/j.mcat.2019.02.001] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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5
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van Hoof AJF, Filot IAW, Friedrich H, Hensen EJM. Reversible Restructuring of Silver Particles during Ethylene Epoxidation. ACS Catal 2018; 8:11794-11800. [PMID: 30555732 PMCID: PMC6292700 DOI: 10.1021/acscatal.8b03331] [Citation(s) in RCA: 26] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/20/2018] [Revised: 10/30/2018] [Indexed: 11/28/2022]
Abstract
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The restructuring
of a silver catalyst during ethylene epoxidation
under industrially relevant conditions was investigated without and
with vinyl chloride (VC) promotion. During non-VC-promoted ethylene
epoxidation, the silver particles grow and voids are formed at the
surface and in the bulk. Electron tomography highlighted the presence
of voids below the Ag surface. A mechanism is proposed involving reconstruction
of the silver lattice and defect sites induced by oxygen adsorption
on the external surface and grain boundaries, which finally create
pores. Promotion of the catalytic reaction by VC suppresses to a significant
extent void formation. The use of VC also redisperses silver particles,
initially grown during ethylene epoxidation without VC. This process
is rapid as the average size decreased from 172 to 136 nm within 2
h. These insights emphasize the dynamic nature of the silver particles
during the ongoing ethylene epoxidation reaction and indicate that
particle size and morphology strongly depend on reaction conditions.
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Affiliation(s)
- Arno J. F. van Hoof
- Laboratory of Inorganic Materials Chemistry, Schuit Institute of Catalysis, Eindhoven University of Technology P.O. Box 513, 5600 MB Eindhoven, The Netherlands
| | - Ivo A. W. Filot
- Laboratory of Inorganic Materials Chemistry, Schuit Institute of Catalysis, Eindhoven University of Technology P.O. Box 513, 5600 MB Eindhoven, The Netherlands
| | - Heiner Friedrich
- Laboratory of Materials and Interface Chemistry, Eindhoven University of Technology P.O. Box 513, 5600 MB Eindhoven, The Netherlands
| | - Emiel J. M. Hensen
- Laboratory of Inorganic Materials Chemistry, Schuit Institute of Catalysis, Eindhoven University of Technology P.O. Box 513, 5600 MB Eindhoven, The Netherlands
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6
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Antonyshyn I, Sichevych O, Rasim K, Ormeci A, Burkhardt U, Titlbach S, Schunk SA, Armbrüster M, Grin Y. Chemical Behaviour of CaAg
2
under Ethylene Epoxidation Conditions. Eur J Inorg Chem 2018. [DOI: 10.1002/ejic.201800710] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Iryna Antonyshyn
- Max‐Planck‐Institut für Chemische Physik fester Stoffe Nöthnitzer Str. 40 01187 Dresden Germany
| | - Olga Sichevych
- Max‐Planck‐Institut für Chemische Physik fester Stoffe Nöthnitzer Str. 40 01187 Dresden Germany
| | - Karsten Rasim
- Max‐Planck‐Institut für Chemische Physik fester Stoffe Nöthnitzer Str. 40 01187 Dresden Germany
| | - Alim Ormeci
- Max‐Planck‐Institut für Chemische Physik fester Stoffe Nöthnitzer Str. 40 01187 Dresden Germany
| | - Ulrich Burkhardt
- Max‐Planck‐Institut für Chemische Physik fester Stoffe Nöthnitzer Str. 40 01187 Dresden Germany
| | | | | | - Marc Armbrüster
- Technische Universität Chemnitz Fakultät für Naturwissenschaften Institut für Chemie Straße der Nationen 62 09111 Chemnitz Germany
| | - Yuri Grin
- Max‐Planck‐Institut für Chemische Physik fester Stoffe Nöthnitzer Str. 40 01187 Dresden Germany
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7
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Xie M, Freund H. Optimal reactor design and operation taking catalyst deactivation into account. Chem Eng Sci 2018. [DOI: 10.1016/j.ces.2017.10.010] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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8
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Ren D, Cheng G, Li J, Li J, Dai W, Sun X, Cheng D. Effect of Rhenium Loading Sequence on Selectivity of Ag–Cs Catalyst for Ethylene Epoxidation. Catal Letters 2017. [DOI: 10.1007/s10562-017-2211-5] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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9
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Luong J, Gras R, Shellie R, Cortes H. Tandem sulfur chemiluminescence and flame ionization detection with planar microfluidic devices for the characterization of sulfur compounds in hydrocarbon matrices. J Chromatogr A 2013; 1297:231-5. [DOI: 10.1016/j.chroma.2013.04.080] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/06/2013] [Revised: 04/24/2013] [Accepted: 04/25/2013] [Indexed: 10/26/2022]
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10
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Rahimpour MR, Shayanmehr M, Nazari M. Modeling and Simulation of an Industrial Ethylene Oxide (EO) Reactor Using Artificial Neural Networks (ANN). Ind Eng Chem Res 2011. [DOI: 10.1021/ie101319d] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- M. R. Rahimpour
- Department of Chemical Engineering, School of Chemical and Petroleum Engineering, Shiraz University, Shiraz 71345, Iran
| | - M. Shayanmehr
- Department of Chemical Engineering, School of Chemical and Petroleum Engineering, Shiraz University, Shiraz 71345, Iran
| | - M. Nazari
- Department of Chemical Engineering, Amirkabir University of Technology, No. 424, Hafez Ave., Tehran, Iran
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Debecker DP, Faure C, Meyre ME, Derré A, Gaigneaux EM. A new bio-inspired route to metal-nanoparticle-based heterogeneous catalysts. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2008; 4:1806-1812. [PMID: 18844300 DOI: 10.1002/smll.200800304] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/26/2023]
Abstract
Onion-type multilamellar vesicles are made of concentric bilayers of organic surfactant and are mainly known for their potential applications in biotechnology. They can be used as microreactors for the spontaneous and controlled production of metal nanoparticles. This process does not require any thermal treatment and, hence, it is also attractive for material sciences such as heterogeneous catalysis. In this paper, silver-nanoparticle-based catalysts are prepared by transferring onion-grown silver nanoparticles onto inorganic supports. The resulting materials are active in the total oxidation of benzene, attesting that this novel bio-inspired concept is promising in inorganic catalysis.
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Affiliation(s)
- Damien P Debecker
- Université Catholique de Louvain, Unité de Catalyse et Chimie des Matériaux Divisés, Croix du Sud 2/17, B-1348 Louvain-la-Neuve, Belgium.
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12
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Birtill JJ. Measurement and Modeling of the Kinetics of Catalyst Decay in Fixed Beds: The Eurokin Survey. Ind Eng Chem Res 2007. [DOI: 10.1021/ie060590v] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- John J. Birtill
- Department of Chemistry, The University of Glasgow, Glasgow G12 8QQ, Scotland, United Kingdom
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