Effect of H-2 on adsorption and desorption behavior of CO over Rh-Mn-Li-Ti/SiO2 catalyst

	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
刊名	chinese journal of catalysis
	2005-12-01
卷号	26 期号:12 页码:1099-1103
关键词	infrared spectroscopy temperature-programmed desorption rhodium manganese lithium titanium silica supported catalyst hydrogen carbon monoxide adsorption desorption
英文摘要	the 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.
WOS标题词	science & technology ; physical sciences ; technology
类目[WOS]	chemistry, applied ; chemistry, physical ; engineering, chemical
研究领域[WOS]	chemistry ; engineering
关键词[WOS]	supported rhodium catalysts ; carbon-monoxide ; hydrogenation ; rh/sio2 ; insitu ; rh
收录类别	SCI
语种	英语
WOS记录号	WOS:000234620700013
公开日期	2015-11-10
内容类型	期刊论文
源URL	[http://159.226.238.44/handle/321008/139639]
专题	大连化学物理研究所_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, Dalian 116023, Liaoning, Peoples R China
推荐引用方式 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.