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Temperature-programmed surface reaction study on C-2-oxygenate synthesis over SiO2 and nanoporous zeolitic material supported Rh-Mn catalysts
Ma, HT; Yuan, ZY; Wang, Y; Bao, XH
关键词Temperature-programmed Surface Reaction (Tpsr) Temperature-programmed Reaction (Tpr) Tpd Rh-mn-based Catalyst C-2-oxygenates
刊名SURFACE AND INTERFACE ANALYSIS
2001-08-01
32期:1页:224-227
收录类别ISTP ; SCI
文章类型Article
WOS标题词Science & Technology ; Physical Sciences
类目[WOS]Chemistry, Physical
研究领域[WOS]Chemistry
关键词[WOS]CARBON-MONOXIDE HYDROGENATION ; RH/SIO2 CATALYSTS ; SIO2-SUPPORTED RH ; MECHANISM ; RHODIUM ; ACETALDEHYDE ; CONVERSION ; PROMOTER ; PRESSURE ; ETHANOL
英文摘要Temperature-programmed surface reaction (TPSR), temperature-programmed reaction (TPR) and temperature-programmed desorption (TPD) were used to study the synthesis Of C-2-oxygenates from syngas over Rh-Mn-based catalysts supported on amorphous silica and mesoporous MCM-41 supports. Both TPD and TPSR reveal the existence of several different kinds of CO species on the catalyst surface in the course of the catalytic reaction (linear, geminal, bridged and tilt-adsorbed CO species) but only the bridged form and tilt-adsorbed CO species are the precursors for CO dissociation and the formation of C-2-oxygenates. The formation temperature of acetaldehyde is higher than that of ethanol, which suggests that they may be formed via different mechanisms. The ethanol formation activity over the Rh-Mn/MCM-41 catalyst is lower than that over the Rh-Mn/SiO2, which suggests that the number of active sites for ethanol formation are fewer on the surface of Rh-Mn/MCM-41. However, the acetaldehyde formation activities are almost identical for the Rh-Mn catalysts supported on amorphous SiO2 and MCM-41, meaning that acetaldehyde and ethanol might be formed on different active sites. Copyright (C) 2001 John Wiley & Sons, Ltd.
语种英语
WOS记录号WOS:000170551800049
引用统计
被引频次:25[WOS]   [WOS记录]     [WOS相关记录]
文献类型期刊论文
条目标识符http://cas-ir.dicp.ac.cn/handle/321008/138967
专题中国科学院大连化学物理研究所
作者单位1.Chinese Acad Sci, State Key Lab Catalysis, Dalian Inst Chem Phys, Dalian 116023, Peoples R China
2.Chinese Acad Sci, Inst Phys, Beijing Lab Electron Microscopy, Beijing 100080, Peoples R China
3.Chinese Acad Sci, Ctr Condensed Matter Phys, Beijing 100080, Peoples R China
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GB/T 7714
Ma, HT,Yuan, ZY,Wang, Y,et al. Temperature-programmed surface reaction study on C-2-oxygenate synthesis over SiO2 and nanoporous zeolitic material supported Rh-Mn catalysts[J]. SURFACE AND INTERFACE ANALYSIS,2001,32(1):224-227.
APA Ma, HT,Yuan, ZY,Wang, Y,&Bao, XH.(2001).Temperature-programmed surface reaction study on C-2-oxygenate synthesis over SiO2 and nanoporous zeolitic material supported Rh-Mn catalysts.SURFACE AND INTERFACE ANALYSIS,32(1),224-227.
MLA Ma, HT,et al."Temperature-programmed surface reaction study on C-2-oxygenate synthesis over SiO2 and nanoporous zeolitic material supported Rh-Mn catalysts".SURFACE AND INTERFACE ANALYSIS 32.1(2001):224-227.
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