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题名: FT-IR study on CO hydrogenation to C-2-oxygenates over Rh-based catalyst
作者: Chen Weimiao;  Ding Yunjie;  Jiang Dahao;  Yan Li;  Wang Tao;  Zhu Hejun;  Luo Hongyuan
关键词: rhodium-based catalyst ;  carbon monoxide ;  hydrogenation ;  C-2-oxygenate ;  infrared spectroscopy
刊名: CHINESE JOURNAL OF CATALYSIS
发表日期: 2006-12-01
卷: 27, 期:12, 页:1059-1062
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: In-situ FT-IR technique was employed to investigate the evolution of surface species adsorbed on the Rh-Mn-Li-Ti/SiO2 catalyst under the reaction conditions including pressure, temperature, and H-2/CO ratio during CO hydrogenation to C-2-oxygenates. The results showed that high pressure favored the adsorption and the activation of CO, while high temperature favored the dissociation of adsorbed CO. The employment of high pressure and nigh temperature conditions not only promoted CO adsorption on the catalyst surface but also remained proper activity of CO dissociation. Thus CO insertion activity was enhanced, resulting in good performance for C-2-oxygenate formation. The increase in H-2/CO ratio promoted the adsorption of CO, and hence CO insertion, especially CO dissociation and hydrogenation, were enhanced. However, the high activities for CO dissociation and hydrogenation resulted from too high H2/CO ratio might suppress CO insertion, and thus the activity for the formation of C2-oxygenates decreased. Compared with the Rh/SiO2 catalyst, the addition of promoters (Mn, Li, and Ti) favored the formation of C-2-oxygenates.
关键词[WOS]: HIGH-PRESSURE ;  SIO2-SUPPORTED RH ;  CONVERSION ;  SYNGAS
语种: 英语
WOS记录号: WOS:000243503100005
Citation statistics: 
内容类型: 期刊论文
URI标识: http://cas-ir.dicp.ac.cn/handle/321008/140177
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. FT-IR study on CO hydrogenation to C-2-oxygenates over Rh-based catalyst[J]. CHINESE JOURNAL OF CATALYSIS,2006,27(12):1059-1062.
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