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题名: FeOx Supported Single-Atom Pd Bifunctional Catalyst for Water Gas Shift Reaction
作者: Sun, Xiucheng1, 2;  Lin, Jian1;  Zhou, Yanliang1, 2;  Li, Lin1;  Su, Yang1;  Wang, Xiaodong1;  Zhang, Tao1
关键词: hydrogen ;  water gas shift ;  palladium ;  iron oxide ;  single atoms
刊名: AICHE JOURNAL
发表日期: 2017-09-01
DOI: 10.1002/aic.15759
卷: 63, 期:9, 页:4022-4031
收录类别: SCI
文章类型: Article
WOS标题词: Science & Technology ;  Technology
类目[WOS]: Engineering, Chemical
研究领域[WOS]: Engineering
英文摘要: Water gas shift reaction on supported noble metal catalysts is an essential process for upgrading hydrogen source industrially. Here a series of Pd/FeOx catalysts were detected for this reaction with Pd/Al2O3 as reference. It was found that Pd/FeOx exhibited higher CO conversion than Pd/Al2O3 with a good stability even in the presence of CO2 and H-2. Along the loading decreasing, the turnover frequency of exposed Pd atoms increased with the dispersion from subnanometer (similar to 1 nm) to single atoms. Various characterizations suggested that Pd single atoms greatly enhanced the reducibility of FeOx and facilitated the formation of oxygen vacancies, which served as sites to promote the dissociation of H2O to form H-2 and atomic O. The atomic O was ready to react with the linear adsorbed CO species on Pd single-atom sites through a redox mechanism, which resulted in low activation energy of similar to 30 kJ mol(-1). (C) 2017 American Institute of Chemical Engineers
关键词[WOS]: TEMPERATURE CO OXIDATION ;  PREFERENTIAL OXIDATION ;  HYDROGEN-PRODUCTION ;  CARBON-MONOXIDE ;  WGS REACTION ;  CERIA ;  NANOPARTICLES ;  MECHANISM ;  KINETICS ;  SYSTEMS
语种: 英语
WOS记录号: WOS:000407192500032
Citation statistics: 
内容类型: 期刊论文
URI标识: http://cas-ir.dicp.ac.cn/handle/321008/149953
Appears in Collections:中国科学院大连化学物理研究所_期刊论文

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作者单位: 1.Chinese Acad Sci, Dalian Inst Chem Phys, State Key Lab Catalysis, Dalian 116023, Peoples R China
2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China

Recommended Citation:
Sun, Xiucheng,Lin, Jian,Zhou, Yanliang,et al. FeOx Supported Single-Atom Pd Bifunctional Catalyst for Water Gas Shift Reaction[J]. AICHE JOURNAL,2017,63(9):4022-4031.
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