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题名: Catalytic performance of the Pt/TiO2 catalysts in reverse water gas shift reaction: Controlled product selectivity and a mechanism study
作者: Chen, Xiaodong1, 2;  Su, Xiong1;  Duan, Hongmin1;  Liang, Binglian1, 2;  Huang, Yanqiang1;  Zhang, Tao1
关键词: Pt/TiO2 ;  Particle size ;  Reverse water-gas shift reaction ;  CO2 methanation ;  Consecutive reaction
刊名: CATALYSIS TODAY
发表日期: 2017-03-01
DOI: 10.1016/j.cattod.2016.03.020
卷: 281, 页:312-318
收录类别: SCI ;  ISTP
文章类型: Article
WOS标题词: Science & Technology ;  Physical Sciences ;  Technology
类目[WOS]: Chemistry, Applied ;  Chemistry, Physical ;  Engineering, Chemical
研究领域[WOS]: Chemistry ;  Engineering
英文摘要: In this study, the catalytic performance of CO2 hydrogenation reaction over Pt/TiO2 catalyst has been evaluated. The effect of Pt particle size and reaction conditions (e.g., temperature and space velocity) on the selectivity of CO and CH4 was identified. CH4 formed over the PtiTiO(2) catalysts following a consecutive pathway (likely, CO2 -> CO -> CH4) and the Pt-CO species derived from the reverse water gas shift (RWGS) reaction was supposed to be the key intermediate for the formation of CH4. By introducing an in situ FTIR experiment, the Pt-O-v-Ti3+ species formed at the interface between Pt and reducible TiO2 support was identified as the active sites for the formation of CO, while large Pt particles facilitate the hydrogenation of CO to produce CH4 at higher temperature. (C) 2016 Elsevier B.V. All rights reserved.
关键词[WOS]: CO2 REDUCTION ;  PT/CEO2 CATALYST ;  RWGS REACTION ;  MEMBRANES ;  SUPPORTS ;  METALS
语种: 英语
WOS记录号: WOS:000390623300010
Citation statistics: 
内容类型: 期刊论文
URI标识: http://cas-ir.dicp.ac.cn/handle/321008/151838
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, 457 Zhongshan Rd, Dalian 116023, Peoples R China
2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China

Recommended Citation:
Chen, Xiaodong,Su, Xiong,Duan, Hongmin,et al. Catalytic performance of the Pt/TiO2 catalysts in reverse water gas shift reaction: Controlled product selectivity and a mechanism study[J]. CATALYSIS TODAY,2017,281:312-318.
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