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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
KeywordRhodium Iron Carbon Monoxide Hydrogenation C-2 Oxygenates
Source PublicationAPPLIED CATALYSIS A-GENERAL
2003-03-31
Volume243Issue:1Pages:155-164
Indexed BySCI
SubtypeArticle
Department805
Funding Project805
Contribution Rank1;1
WOS HeadingsScience & Technology ; Physical Sciences ; Life Sciences & Biomedicine
WOS SubjectChemistry, Physical ; Environmental Sciences
WOS Research AreaChemistry ; Environmental Sciences & Ecology
WOS KeywordSUPPORTED RHODIUM CATALYSTS ; RH/SIO2 CATALYSTS ; CARBON-MONOXIDE ; RH ; H-2 ; ACETALDEHYDE ; DESORPTION ; MANGANESE ; RHMN/NAY ; SYNGAS
AbstractThe 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.
Language英语
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WOS IDWOS:000181997600013
Citation statistics
Cited Times:62[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://cas-ir.dicp.ac.cn/handle/321008/83351
Collection中国科学院大连化学物理研究所
AffiliationChinese Acad Sci, Dalian Inst Chem Phys, Nat Gas Utilizat & Appl Catalysis Lab, Dalian 116023, Peoples R China
Recommended Citation
GB/T 7714
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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