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Influence of iron promoter on catalytic properties of Rh-Mn-Li/SiO2 for CO hydrogenation
Yin, HM; Ding, YJ; Luo, HY; Zhu, HJ; He, DP; Xiong, JM; Lin, LW
关键词Rhodium Iron Carbon Monoxide Hydrogenation C-2 Oxygenates
刊名APPLIED CATALYSIS A-GENERAL
2003-03-31
243期:1页:155-164
收录类别SCI
文章类型Article
部门归属805
项目归属805
产权排名1;1
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
关键词[WOS]SUPPORTED RHODIUM CATALYSTS ; RH/SIO2 CATALYSTS ; CARBON-MONOXIDE ; RH ; H-2 ; ACETALDEHYDE ; DESORPTION ; MANGANESE ; RHMN/NAY ; SYNGAS
英文摘要The effect of iron promoter on the catalytic properties of Rh-Mn-Li/SiO2 catalyst in the synthesis Of C-2 oxygenates from syngas was investigated by means of the following techniques: CO hydrogenation reaction, temperature-programmed reduction (TPR), temperature-programmed desorption and reaction of adsorbed CO (CO-TPD and TPSR) and pulse adsorption of CO. The results showed that the addition of iron promoter could improve the activity of the catalysts. Unexpectedly, the yield of C-2 oxygenates increased greatly from 331.6 up to 457.5 g/(kg h) when 0.05% Fe was added into Rh-Mn-Li/SiO2 catalyst, while no change in the selectivity to C-2 oxygenates was observed. However, the activity and selectivity Of C-2 oxygenates were greatly decreased if the Fe amount exceeded 1.0%. The existence of a little iron decreased the reducibility of Rh precursor, while the reduction of Fe component itself became easier. CO uptake decreased with increasing the quantity of Fe addition. This phenomenon was further confirmed by CO-TPD results. The CO-TPD and TPSR results showed that only the strongly adsorbed CO could be hydrogenated, while the weakly adsorbed CO was desorbed. We propose that Fe is highly dispersed and in close contact with Rh and Mn; such arrangements were responsible for the high yield Of C-2 oxygenates. (C) 2002 Elsevier Science B.V. All rights reserved.
语种英语
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WOS记录号WOS:000181997600013
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被引频次:61[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/321008/83351
专题中国科学院大连化学物理研究所
作者单位Chinese Acad Sci, Dalian Inst Chem Phys, Nat Gas Utilizat & Appl Catalysis Lab, Dalian 116023, Peoples R China
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Yin, HM,Ding, YJ,Luo, HY,et al. Influence of iron promoter on catalytic properties of Rh-Mn-Li/SiO2 for CO hydrogenation[J]. APPLIED CATALYSIS A-GENERAL,2003,243(1):155-164.
APA Yin, HM.,Ding, YJ.,Luo, HY.,Zhu, HJ.,He, DP.,...&Lin, LW.(2003).Influence of iron promoter on catalytic properties of Rh-Mn-Li/SiO2 for CO hydrogenation.APPLIED CATALYSIS A-GENERAL,243(1),155-164.
MLA Yin, HM,et al."Influence of iron promoter on catalytic properties of Rh-Mn-Li/SiO2 for CO hydrogenation".APPLIED CATALYSIS A-GENERAL 243.1(2003):155-164.
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