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From mechanistic to kinetic analyses of ethanol steam reforming over Ir/CeO2 catalyst
Wang, Fagen1,2; Cai, Weijie1,2; Descorme, Claude1; Provendier, Helene1; Shen, Wenjie2; Mirodatos, Claude1; Schuurman, Yves1
KeywordEthanol Steam Reforming Ir/ceo2 Catalyst Kinetic Analysis And Modeling Mechanistic Study
Source PublicationINTERNATIONAL JOURNAL OF HYDROGEN ENERGY
2014-10-22
DOI10.1016/j.ijhydene.2014.06.121
Volume39Issue:31Pages:18005-18015
Indexed BySCI
SubtypeArticle
WOS HeadingsScience & Technology ; Physical Sciences ; Technology
WOS SubjectChemistry, Physical ; Electrochemistry ; Energy & Fuels
WOS Research AreaChemistry ; Electrochemistry ; Energy & Fuels
WOS KeywordGAS SHIFT REACTION ; HYDROGEN-PRODUCTION ; LOW-TEMPERATURE ; H-2 ; NI
AbstractThis work presents a kinetic analysis of ethanol steam reforming (ESR) over a performing Ir/CeO2 catalyst based on a bi-functional mechanism. A first conventional power-law based kinetic study was carried out by varying the main operating parameters (temperature, steam/ethanol molar ratio and partial pressure of products). A limited fit was achieved between the experimental data and the data calculated from this model based on a single type of site, demonstrating the need of a kinetic analysis integrating more closely the demonstrated bi-functional mechanism of the reaction. A kinetic model considering two distinct adsorption sites, on ceria support and on iridium particles, was then considered and only reactions involving the two types of sites, i.e. occurring at the ceria/metal interface, were used to build that model. A good agreement between the experimental data and the model was obtained, without systematic deviations. The central role of the metal-support interface was also consistent with the deactivation of this catalyst upon sintering, related to both changes in metal and support dispersion with time on stream. Copyright (C) 2014, Hydrogen Energy Publications, LLC. Published by Elsevier Ltd. All rights reserved.
Language英语
WOS IDWOS:000343781100049
Citation statistics
Document Type期刊论文
Identifierhttp://cas-ir.dicp.ac.cn/handle/321008/145434
Collection中国科学院大连化学物理研究所
Affiliation1.Univ Lyon 1, CNRS, Inst Rech Catalyse & Environm Lyon IRCELYON, UMR 5256, F-69626 Villeurbanne, France
2.Chinese Acad Sci, Dalian Inst Chem Phys, State Key Lab Catalysis, Dalian 116023, Peoples R China
Recommended Citation
GB/T 7714
Wang, Fagen,Cai, Weijie,Descorme, Claude,et al. From mechanistic to kinetic analyses of ethanol steam reforming over Ir/CeO2 catalyst[J]. INTERNATIONAL JOURNAL OF HYDROGEN ENERGY,2014,39(31):18005-18015.
APA Wang, Fagen.,Cai, Weijie.,Descorme, Claude.,Provendier, Helene.,Shen, Wenjie.,...&Schuurman, Yves.(2014).From mechanistic to kinetic analyses of ethanol steam reforming over Ir/CeO2 catalyst.INTERNATIONAL JOURNAL OF HYDROGEN ENERGY,39(31),18005-18015.
MLA Wang, Fagen,et al."From mechanistic to kinetic analyses of ethanol steam reforming over Ir/CeO2 catalyst".INTERNATIONAL JOURNAL OF HYDROGEN ENERGY 39.31(2014):18005-18015.
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