DICP OpenIR
Effect of H-2 on adsorption and desorption behavior of CO over Rh-Mn-Li-Ti/SiO2 catalyst
Chen, WM; Ding, YJ; Wang, T; Jiang, DH; Li, XM; Luo, HY
KeywordInfrared Spectroscopy Temperature-programmed Desorption Rhodium Manganese Lithium Titanium Silica Supported Catalyst Hydrogen Carbon Monoxide Adsorption Desorption
Source PublicationCHINESE JOURNAL OF CATALYSIS
2005-12-01
Volume26Issue:12Pages:1099-1103
Indexed BySCI
SubtypeArticle
WOS HeadingsScience & Technology ; Physical Sciences ; Technology
WOS SubjectChemistry, Applied ; Chemistry, Physical ; Engineering, Chemical
WOS Research AreaChemistry ; Engineering
WOS KeywordSUPPORTED RHODIUM CATALYSTS ; CARBON-MONOXIDE ; HYDROGENATION ; RH/SIO2 ; INSITU ; RH
AbstractThe effect of H-2 on the adsorption and desorption behavior of CO on the Rh-Mn-Li-Ti/SiO2 catalyst was examined by IR spectroscopy and temperature-programmed desorption. The results indicated that the pre-adsorbed H-2 mainly occupied the adsorption sites for linearly adsorbed CO, and the part of subsequently adsorbed CO reacted with adsorbed hydrogen producing carbonyl hydrides. In the mixture of CO and hydrogen, carbonyl hydrides were also formed on Rh sites causing the red shift of the IR band of linearly adsorbed CO, and the high hydrogen concentration enhanced the CO adsorption. At 323 K, the IR band position and intensity of pre-adsorbed CO were not sensitive to the hydrogen. However, with increasing temperature, the presence of hydrogen promoted the desorption of weakly adsorbed CO, and its re-adsorption, as well as the dissociation of strongly adsorbed CO. In addition, the existence of hydrogen intensified the CO adsorption and influenced the structure of Rh giving rise to the increase in Rh dispersion and thereby the amount of CO adsorbed on Rh at 323 K.
Language英语
WOS IDWOS:000234620700013
Citation statistics
Cited Times:2[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://cas-ir.dicp.ac.cn/handle/321008/139639
Collection中国科学院大连化学物理研究所
AffiliationChinese Acad Sci, Dalian Inst Chem Phys, Dalian 116023, Liaoning, Peoples R China
Recommended Citation
GB/T 7714
Chen, WM,Ding, YJ,Wang, T,et al. Effect of H-2 on adsorption and desorption behavior of CO over Rh-Mn-Li-Ti/SiO2 catalyst[J]. CHINESE JOURNAL OF CATALYSIS,2005,26(12):1099-1103.
APA Chen, WM,Ding, YJ,Wang, T,Jiang, DH,Li, XM,&Luo, HY.(2005).Effect of H-2 on adsorption and desorption behavior of CO over Rh-Mn-Li-Ti/SiO2 catalyst.CHINESE JOURNAL OF CATALYSIS,26(12),1099-1103.
MLA Chen, WM,et al."Effect of H-2 on adsorption and desorption behavior of CO over Rh-Mn-Li-Ti/SiO2 catalyst".CHINESE JOURNAL OF CATALYSIS 26.12(2005):1099-1103.
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