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Enhanced performance of Rh-1/TiO2 catalyst without methanation in water-gas shift reaction
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
2017-06-01
DOI10.1002/aic.15585
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
关键词[WOS]SINGLE-ATOM CATALYSTS ; OXIDE SUPPORTS ; CO OXIDATION ; HYDROGEN ; CERIA ; RH ; GOLD ; SITES ; TIO2 ; IONS
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
语种英语
WOS记录号WOS:000400658400024
引用统计
文献类型期刊论文
条目标识符http://cas-ir.dicp.ac.cn/handle/321008/151960
专题中国科学院大连化学物理研究所
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
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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.
APA Guan, Hongling.,Lin, Jian.,Qiao, Botao.,Miao, Shu.,Wang, Ai-Qin.,...&Zhang, Tao.(2017).Enhanced performance of Rh-1/TiO2 catalyst without methanation in water-gas shift reaction.AICHE JOURNAL,63(6),2081-2088.
MLA Guan, Hongling,et al."Enhanced performance of Rh-1/TiO2 catalyst without methanation in water-gas shift reaction".AICHE JOURNAL 63.6(2017):2081-2088.
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