Oxidation of platinum surfaces and reaction with carbon monoxide

	Oxidation of platinum surfaces and reaction with carbon monoxide
	Li, Wei-Xue 1,2
刊名	journal of physics-condensed matter
	2008-05-07
卷号	20 期号:18 页码:184022-1-184022-9
ISSN号	0953-8984
通讯作者	李微雪
产权排序	1;1
英文摘要	identification of structures of active sites of catalysts under realistic conditions is key for understanding the structure-reactivity relationship and mechanism of catalytic reactions. various in situ techniques and novel theoretical concepts (e.g. ab initio atomistic thermodynamics) have been developed. as an example, oxidation of stepped pt(110) and pt(332) surfaces has been studied using density functional theory, scanning tunneling microscopy and high resolution x-ray photoemission spectroscopy. it was found that ridge pt atoms are highly reactive and one-dimensional (1d) oxide stripes form along the pt ridge. within the 1d oxide stripes, the reactivity is low, and reaction occurs only at the defect sites and/or boundaries of 1d pto2 stripes. furthermore, for stepped pt(332) surfaces, a site highly active in promoting carbon monoxide (co) oxidation was identified due to the formation of novel transition states at the boundary of the 1d oxide and chemisorption domains. since the ratio of the ridge atoms increases with decrease of the particle sizes, the present study highlights the importance of the 1d oxide components for the reactivity of supported nanosize catalysts.
WOS标题词	science & technology ; physical sciences
类目[WOS]	physics, condensed matter
研究领域[WOS]	physics
关键词[WOS]	density-functional theory ; oxygen-adsorption ; molecular-dynamics ; rh(110) surface ; co oxidation ; pt(111) ; phase ; oxide ; reconstruction ; pd(111)
收录类别	SCI
原文出处	true
语种	英语
WOS记录号	WOS:000255661200024
公开日期	2010-11-30
内容类型	期刊论文
源URL	[http://159.226.238.44/handle/321008/100275]
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.Chinese Acad Sci, Dalian Inst Chem Phys, State Key Lab Catalysis, Dalian 116023, Peoples R China 2.Chinese Acad Sci, Dalian Inst Chem Phys, Ctr Theoret & Computat Chem, Dalian 116023, Peoples R China
推荐引用方式 GB/T 7714	Li, Wei-Xue. Oxidation of platinum surfaces and reaction with carbon monoxide[J]. journal of physics-condensed matter,2008,20(18):184022-1-184022-9.
APA	Li, Wei-Xue.(2008).Oxidation of platinum surfaces and reaction with carbon monoxide.journal of physics-condensed matter,20(18),184022-1-184022-9.
MLA	Li, Wei-Xue."Oxidation of platinum surfaces and reaction with carbon monoxide".journal of physics-condensed matter 20.18(2008):184022-1-184022-9.