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题名: Approaches and nature of improving Rh-based catalyst performance for CO hydrogenation to C-2-oxygenates
作者: Chen Weimiao;  Ding Yunjie;  Jiang Dahao;  Jiao Guiping;  Zhu Hejun;  Pan Zhendong;  Luo Hongyuan
关键词: carbon monoxide ;  hydrogenation ;  rhodium-based catalyst ;  C-2-oxygenate ;  thermodynamics ;  reaction mechanism
刊名: CHINESE JOURNAL OF CATALYSIS
发表日期: 2006-11-01
卷: 27, 期:11, 页:999-1004
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: Thermodynamic analysis results revealed that the formation of C-2-oxygenates from syngas is much more unfavorable than the formation of hydrocarbons. Therefore, the crucial and effective method to promote the C-2-oxygenate synthesis is to develop high selective catalysts. According to the mechanism of C-2-oxygenate formation, the natures and the approaches to improve the catalytic performance of the Rh-based catalyst for CO hydrogenation to C-2-oxygenates were the improvement and the balance in CO dissociation and insertion activity, the proper hydrogenation activity, and the optimal Rh size on the catalyst surface. The impregnation and reduction conditions were optimized to suppress correctly the catalytic activity of the Rh-Mn-Li-Fe/SiO2 catalyst for CO hydrogenation. Consequently, CO insertion competed favorably with hydrogenation, resulting in a maximum selectivity (91.6% In mass fraction) for C-2-oxygenates with a high yield and a much low methane selectivity (6.3% in mass fraction).
关键词[WOS]: SUPPORTED RHODIUM CATALYSTS ;  METAL-PARTICLE SIZE ;  ETHYLENE HYDROFORMYLATION ;  OXYGENATE FORMATION ;  PROMOTED RHODIUM ;  MECHANISM ;  SELECTIVITY ;  RH/SIO2
语种: 英语
WOS记录号: WOS:000242869300015
Citation statistics: 
内容类型: 期刊论文
URI标识: http://cas-ir.dicp.ac.cn/handle/321008/140100
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 116023, Liaoning, Peoples R China

Recommended Citation:
Chen Weimiao,Ding Yunjie,Jiang Dahao,et al. Approaches and nature of improving Rh-based catalyst performance for CO hydrogenation to C-2-oxygenates[J]. CHINESE JOURNAL OF CATALYSIS,2006,27(11):999-1004.
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