Low-temperature CO oxidation over CuO-CeO2/SiO2 catalysts: Effect of CeO2 content and carrier porosity

	Low-temperature CO oxidation over CuO-CeO2/SiO2 catalysts: Effect of CeO2 content and carrier porosity
	Luo, Jingjie 1; Chu, Wei 1; Xu, Huiyuan 1; Jiang, Chengfa 1; Zhang, Tao 2
刊名	journal of natural gas chemistry
	2010-07-01
卷号	19 期号:4 页码:355-361
关键词	CuO-CeO2 based catalyst silica carrier porosity carbon monoxide oxidation O-2-TPD
英文摘要	the effects of ceo2 contents and silica carrier porosity with their pore diameters ranging from 5.2 nm to 12.5 nm of cuo-ceo2/sio2 catalysts in co oxidation were investigated. the catalysts were characterized by n-2 adsorption/desorption at low temperature, x-ray diffraction (xrd), temperature-programmed reduction by h-2 (h-2-tpr), oxygen temperature programmed desorption (o-2-tpd) and x-ray photoelectron spectroscopy (xps). the results suggested that, the ceria content and the porosity of sio2 carrier possessed great impacts on the structures and catalytic performances of cuo-ceo2/sio2 catalysts. when appropriate content of ceo2 (ce content <= 8 wt%) was added, the catalytic activity was greatly enhanced. in the catalyst supported on silica carrier with larger pore diameter, higher dispersion of cuo was observed, better agglomeration-resistant capacity was displayed and more lattice oxygen could be found, thus the cuo-ceo2 supported on si-1 showed higher catalytic activity for low-temperature co oxidation.
WOS标题词	science & technology ; physical sciences ; technology
类目[WOS]	chemistry, applied ; chemistry, physical ; energy & fuels ; engineering, chemical
研究领域[WOS]	chemistry ; energy & fuels ; engineering
关键词[WOS]	cuo/ceo2 catalysts ; surface-area ; tpr ; identification ; spectroscopy ; stability ; systems ; oxides ; oxygen ; ceria
收录类别	SCI
语种	英语
WOS记录号	WOS:000281083500001
公开日期	2015-11-17
内容类型	期刊论文
源URL	[http://159.226.238.44/handle/321008/141723]
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	1.Sichuan Univ, Dept Chem Engn, Chengdu 610065, Sichuan, Peoples R China 2.Chinese Acad Sci, Dalian Inst Chem Phys, Dalian 116023, Liaoning, Peoples R China
推荐引用方式 GB/T 7714	Luo, Jingjie,Chu, Wei,Xu, Huiyuan,et al. Low-temperature CO oxidation over CuO-CeO2/SiO2 catalysts: Effect of CeO2 content and carrier porosity[J]. journal of natural gas chemistry,2010,19(4):355-361.
APA	Luo, Jingjie,Chu, Wei,Xu, Huiyuan,Jiang, Chengfa,&Zhang, Tao.(2010).Low-temperature CO oxidation over CuO-CeO2/SiO2 catalysts: Effect of CeO2 content and carrier porosity.journal of natural gas chemistry,19(4),355-361.
MLA	Luo, Jingjie,et al."Low-temperature CO oxidation over CuO-CeO2/SiO2 catalysts: Effect of CeO2 content and carrier porosity".journal of natural gas chemistry 19.4(2010):355-361.