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题名: Roles of chlorine in the CO hydrogenation to C-2-oxygenates over Rh-Mn-Li/SiO2 catalysts
作者: Jiang, Dahao;  Ding, Yunjie;  Pan, Zhendong;  Li, Xianming;  Jiao, Guiping;  Li, Jingwei;  Chen, Weirniao;  Luo, Hongyuan
关键词: nitrate and chloride precursors ;  chlorine content ;  Rh-Mn-Li/SiO2 catalyst ;  C-2-oxygenates ;  CO hydrogenation
刊名: APPLIED CATALYSIS A-GENERAL
发表日期: 2007
DOI: 10.1016/j.apcata.2007.06.038
卷: 331, 页:70-77
收录类别: SCI
文章类型: Article
WOS标题词: Science & Technology ;  Physical Sciences ;  Life Sciences & Biomedicine
类目[WOS]: Chemistry, Physical ;  Environmental Sciences
研究领域[WOS]: Chemistry ;  Environmental Sciences & Ecology
英文摘要: Rh-Mn-U/SiO2 catalysts were prepared by transforming nitrate and chloride precursors from one form to another stepwise, in an attempt to investigate the roles of chlorine in determining the catalytic properties of Rh-Mn-Li/SiO2- The space time yield (STY) of C-2-oxygenates and CO conversion increased from 270.1 g/(kg-cat h) and 4.3% to 597.1 g/(kg-cat h) and 8.5%, respectively, and the selectivity towards C-2-oxygenates increased from 65.5 to 73.6%, when the precursors of Rh, Mn and Li were completely transformed from nitrates to chlorides. The chlorine seems to function by increasing the amount of Rh species in intimate contact with Mn species and increasing the intensity of Rh-Mn interaction during reduction of the catalyst, therefore improving the Rh particle geometries, sizes and size distribution and the ratio of Rh+/Rh-0 on the reduced catalyst. Such properties are responsible for the activity and selectivity towards C2-oxygenates over Rh-Mn-Li/SiO2 catalyst. (C) 2007 Elsevier B.V. All rights reserved.
关键词[WOS]: SUPPORTED RHODIUM CATALYSTS ;  CARBON-MONOXIDE HYDROGENATION ;  METAL-PARTICLE SIZE ;  RH-BASED CATALYSTS ;  SYNGAS CONVERSION ;  SELECTIVE SYNTHESIS ;  RH/SIO2 CATALYSTS ;  PROMOTED RHODIUM ;  ACETIC-ACID ;  PRESSURE
语种: 英语
WOS记录号: WOS:000250510100010
Citation statistics: 
内容类型: 期刊论文
URI标识: http://cas-ir.dicp.ac.cn/handle/321008/140628
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, Lab Appl Catalysis, Dalian 116023, Peoples R China
2.Chinese Acad Sci, Dalian Inst Chem Phys, State Key Lab Catalysis, Dalian 116023, Peoples R China
3.Chinese Acad Sci, Grad Sch, Beijing 100039, Peoples R China

Recommended Citation:
Jiang, Dahao,Ding, Yunjie,Pan, Zhendong,et al. Roles of chlorine in the CO hydrogenation to C-2-oxygenates over Rh-Mn-Li/SiO2 catalysts[J]. APPLIED CATALYSIS A-GENERAL,2007,331:70-77.
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