SPILLOVER OF ATOMIC OXYGEN AND REVERSE SPILLOVER OF DIOXYGEN SPECIES ON PT/CEO2 CATALYST

	SPILLOVER OF ATOMIC OXYGEN AND REVERSE SPILLOVER OF DIOXYGEN SPECIES ON PT/CEO2 CATALYST
	LI, C; CHEN, YX; LI, WZ; XIN, Q
刊名	STUDIES IN SURFACE SCIENCE AND CATALYSIS
	1993
卷号	77 页码:217-222
ISSN号	0167-2991
文献子类	Article
英文摘要	Oxygen adsorption and the reactivities of adsorbed oxygen species on Pt/CeO2 and CeO2 were studied by chemisorption, electrical conductivity measurement, and FT-IR employing isotopic labeling. IR spectra show that the adsorbed dioxygen species are stable on CeO2 but are hardly to be detected on Pt/CeO2 under the same conditions. Isotopic results confirmed that the adsorbed oxygen on Pt/CeO2 is able to oxidize CH4 into formate species(localized on CeO2 surface) even at 373 K however the adsobed oxygen species on CeO2 alone are almost inert toward CH4 at the same temperature. It is suggested that the adsorbed dioxygen species are labile and facilely migrate onto Pt surface(here referred to as reverse spillover) where they convert into atomic oxygen species which can spillover from Pt onto CeO2 surface. The spillover oxygen species are most possibly responsible for the formation of formate species on CeO2 surface via the oxidation of methane at 373 K.
WOS关键词	TRANSFORM INFRARED-SPECTROSCOPY ; ROOM-TEMPERATURE ; CARBON-MONOXIDE ; ADSORPTION ; DIOXIDE ; CEO2
WOS研究方向	Chemistry ; Engineering
语种	英语
出版者	ELSEVIER SCIENCE BV
WOS记录号	WOS:A1993MK94000031
内容类型	期刊论文
源URL	[http://cas-ir.dicp.ac.cn/handle/321008/167486]
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
通讯作者	LI, C
推荐引用方式 GB/T 7714	LI, C,CHEN, YX,LI, WZ,et al. SPILLOVER OF ATOMIC OXYGEN AND REVERSE SPILLOVER OF DIOXYGEN SPECIES ON PT/CEO2 CATALYST[J]. STUDIES IN SURFACE SCIENCE AND CATALYSIS,1993,77:217-222.
APA	LI, C,CHEN, YX,LI, WZ,&XIN, Q.(1993).SPILLOVER OF ATOMIC OXYGEN AND REVERSE SPILLOVER OF DIOXYGEN SPECIES ON PT/CEO2 CATALYST.STUDIES IN SURFACE SCIENCE AND CATALYSIS,77,217-222.
MLA	LI, C,et al."SPILLOVER OF ATOMIC OXYGEN AND REVERSE SPILLOVER OF DIOXYGEN SPECIES ON PT/CEO2 CATALYST".STUDIES IN SURFACE SCIENCE AND CATALYSIS 77(1993):217-222.