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题名: Effect of Li Promoter on Catalytic Performance of Rh-Mn/SiO2 for CO Hydrogenation to C-2-Oxygenates
作者: Li Jingwei1, 3;  Ding Yunjie1, 2;  Lin Ronghe1, 3;  Gong Leifeng1, 3;  Song Xiangen1, 3;  Chen Weimiao1;  Wang Tao1;  Luo Hongyuan1
关键词: lithium ;  rhodium ;  manganese ;  silica ;  carbon monoxide ;  hydrogenation ;  C-2-oxygenate
刊名: CHINESE JOURNAL OF CATALYSIS
发表日期: 2010-03-01
DOI: 10.3724/SP.J.1088.2010.91029
卷: 31, 期:3, 页:365-369
收录类别: SCI
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: The influence of Li loading on the catalytic activity of Li-promoted Rh-Mn/SiO2 catalyst for the synthesis of C-2-oxygenates through CO hydrogenation was investigated. The catalyst samples were characterized by volumetric chemisorption, temperature-programmed reduction, temperature-programmed desorption of CO, and temperature-programmed surface reaction. The addition of Li significantly suppressed the formation of CH4 on the Rh-based catalyst, while the selectivity for higher hydrocarbons was little affected. The Li promoter largely enhanced the selectivity for C-2-oxygenates, especially that of acetic acid. However, the activity of the Rh-based catalyst for CO hydrogenation gradually decreased with the increase in Li loading. It was suggested that the role of Li was to decrease the CO dissociation ability and to reduce the number of active sites for CO dissociation. The uptakes of H-2 and CO on the Li-promoted Rh-based catalyst were almost the same as those on the Rh-Mn/SiO2 catalyst, which implied that most of Li was positioned on the support, and only a small part of the added Li was positioned on the top of Rh particles.
关键词[WOS]: CARBON-MONOXIDE HYDROGENATION ;  SUPPORTED RHODIUM CATALYSTS ;  RH-MN-LI/SIO2 CATALYST ;  CONVERSION ;  LANTHANA ;  RH/SIO2 ;  RH/TIO2
语种: 英语
WOS记录号: WOS:000276535300021
Citation statistics: 
内容类型: 期刊论文
URI标识: http://cas-ir.dicp.ac.cn/handle/321008/142068
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, Dalian Natl Lab Clean Energy, Dalian 116023, Liaoning, Peoples R China
2.Chinese Acad Sci, Dalian Inst Chem Phys, State Key Lab Catalysis, Dalian 116023, Liaoning, Peoples R China
3.Chinese Acad Sci, Grad Univ, Beijing 100049, Peoples R China

Recommended Citation:
Li Jingwei,Ding Yunjie,Lin Ronghe,et al. Effect of Li Promoter on Catalytic Performance of Rh-Mn/SiO2 for CO Hydrogenation to C-2-Oxygenates[J]. CHINESE JOURNAL OF CATALYSIS,2010,31(3):365-369.
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