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题名: Enhanced performance of Rh-1/TiO2 catalyst without methanation in water-gas shift reaction
作者: Guan, Hongling1, 2;  Lin, Jian1;  Qiao, Botao1;  Miao, Shu1;  Wang, Ai-Qin1;  Wang, Xiaodong1;  Zhang, Tao1
关键词: rhodium ;  single atoms ;  water-gas shift ;  hydrogen ;  CH4
刊名: AICHE JOURNAL
发表日期: 2017-06-01
DOI: 10.1002/aic.15585
卷: 63, 期:6, 页:2081-2088
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 (WGS) reaction is an important process for industrial hydrogen production. The side reaction of methanation often causes unavoidable loss of H-2 along with this reaction. Here, we report a Rh-1/TiO2 single-atom catalyst (SAC) with appreciable loading of 0.37 wt %, which exhibited an overall CO conversion of approximate to 95% but without any methanation at 300 degrees C, even under CO2- and H-2-rich WGS stream. The specific activity of this SAC was around four times higher than that of cluster catalyst, which meanwhile suffered from unfavorable methanation. It was found that Rh single atoms promoted the formation of more oxygen vacancies on the TiO2 support to activate H2O to generate H-2 and prohibited the dissociation of H-2 compared with Rh clusters, leading to the enhanced activity and selectivity for WGS. (c) 2016 American Institute of Chemical Engineers AIChE J, 63: 2081-2088, 2017
关键词[WOS]: SINGLE-ATOM CATALYSTS ;  OXIDE SUPPORTS ;  CO OXIDATION ;  HYDROGEN ;  CERIA ;  RH ;  GOLD ;  SITES ;  TIO2 ;  IONS
语种: 英语
WOS记录号: WOS:000400658400024
Citation statistics: 
内容类型: 期刊论文
URI标识: http://cas-ir.dicp.ac.cn/handle/321008/151960
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:
Guan, Hongling,Lin, Jian,Qiao, Botao,et al. Enhanced performance of Rh-1/TiO2 catalyst without methanation in water-gas shift reaction[J]. AICHE JOURNAL,2017,63(6):2081-2088.
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