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Hydrogen production from ethanol over Ir/CeO2 catalysts: A comparative study of steam reforming, partial oxidation and oxidative steam reforming
Cai, Weijie1; Wang, Fagen1; Zhan, Ensheng1; Van Veen, A. C.2; Mirodatos, Claude2; Shen, Wenjie1
KeywordEthanol Hydrogen Ir/ceo2 Reaction Pathway Stability
Source PublicationJOURNAL OF CATALYSIS
2008-07-01
DOI10.1016/j.jcat.2008.04.009
Volume257Issue:1Pages:96-107
Indexed BySCI
SubtypeArticle
WOS HeadingsScience & Technology ; Physical Sciences ; Technology
WOS SubjectChemistry, Physical ; Engineering, Chemical
WOS Research AreaChemistry ; Engineering
WOS KeywordFUEL-CELL APPLICATIONS ; TEMPERATURE-PROGRAMMED DESORPTION ; BIOMASS-DERIVED ETHANOL ; NOBLE-METAL CATALYSTS ; CARBON-CARBON BOND ; NI-BASED CATALYSTS ; SITU FT-IR ; BIO-ETHANOL ; H-2 PRODUCTION ; RH
AbstractSteam reforming, partial oxidation, and oxidative steam reforming of ethanol over Ir/CeO2 catalysts were studied to elucidate the reaction pathway and determine catalytic stability. Temperature-programmed desorption and surface reaction revealed that ethoxy species were immediately formed on ethanol adsorption at room temperature, and were mainly further oxidized to acetate and carbonate species that finally decomposed into CH4/CO and CO2, respectively. Under reaction conditions, acetalclehyde was the primary product below 673 K, which decomposed mainly to methane and carbon monoxide at higher temperatures, whereas methane reforming and the water-gas shift were the major reactions above 773 K. The Ir/CeO2 catalyst demonstrated rather high stability for the reactions at 823 and 923 K with no apparent deactivation for 60 h on stream; the mean size of It particles was stable at around 2-3 nm, but the ceria particles sintered significantly from 6-8 to 14-27 nm. CeO2 likely prevented the highly dispersed It particles from sintering and inhibited coke deposition through strong Ir-CeO2 interactions. (c) 2008 Elsevier Inc. All rights reserved.
Language英语
WOS IDWOS:000257810500012
Citation statistics
Cited Times:134[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://cas-ir.dicp.ac.cn/handle/321008/141084
Collection中国科学院大连化学物理研究所
Affiliation1.Chinese Acad Sci, Dalian Inst Chem Phys, State Key Lab Catalysis, Dalian 116023, Peoples R China
2.Univ Lyon 1, CNRS, IRCELYON, UMR 5256,Univ Lyon, F-69626 Villeurbanne, France
Recommended Citation
GB/T 7714
Cai, Weijie,Wang, Fagen,Zhan, Ensheng,et al. Hydrogen production from ethanol over Ir/CeO2 catalysts: A comparative study of steam reforming, partial oxidation and oxidative steam reforming[J]. JOURNAL OF CATALYSIS,2008,257(1):96-107.
APA Cai, Weijie,Wang, Fagen,Zhan, Ensheng,Van Veen, A. C.,Mirodatos, Claude,&Shen, Wenjie.(2008).Hydrogen production from ethanol over Ir/CeO2 catalysts: A comparative study of steam reforming, partial oxidation and oxidative steam reforming.JOURNAL OF CATALYSIS,257(1),96-107.
MLA Cai, Weijie,et al."Hydrogen production from ethanol over Ir/CeO2 catalysts: A comparative study of steam reforming, partial oxidation and oxidative steam reforming".JOURNAL OF CATALYSIS 257.1(2008):96-107.
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