Activation of an Ir-in-CeO2 catalyst by pulses of CO: The role of oxygen vacancy and carbonates in CO oxidation

	Activation of an Ir-in-CeO2 catalyst by pulses of CO: The role of oxygen vacancy and carbonates in CO oxidation
	Lin, Jian 1,2; Huang, Yanqiang 1; Li, Lin 1; Wang, Aiqin 1; Zhang, Wansheng 1; Wang, Xiaodong 1; Zhang, Tao 1
刊名	catalysis today
	2012-01-17
卷号	180 期号:1 页码:155-160
关键词	Iridium CeO2 Oxygen vacancy Carbonates CO oxidation
通讯作者	张涛 ; 王晓东
产权排序	1,1
英文摘要	an ir-in-ceo2 catalyst was activated by pulses of co, and the effects of the formed oxygen vacancy and carbonates on co oxidation were studied by a pulse calorimetry. a volcano-like relationship between the amount of oxygen vacancy and the catalyst activity is established. the presence of oxygen vacancy is favorable for co oxidation, with the best activity when 1.5% amount of oxygen vacancy is obtained. however, the activity decreases with further increase of oxygen vacancy. a quantitative analysis of the reaction process suggests that the increase of oxygen vacancy promotes the buildup of strongly adsorbed carbonates, leading to the prohibition of the adsorption and activation of co but not o-2. the reduced supply of adsorbed co to react with oxygen species may result in the decreasing activity with more oxygen vacancy. (c) 2011 elsevier b.v. all rights reserved.
学科主题	物理化学
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]	water-gas-shift ; gold-ceria catalysts ; selective oxidation ; temperature ; adsorption ; ceo2 ; surface ; monoxide ; storage ; pt/ceo2
收录类别	SCI
语种	英语
WOS记录号	WOS:000298967600021
公开日期	2013-10-11
内容类型	期刊论文
源URL	[http://159.226.238.44/handle/321008/117891]
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, Grad Univ, Beijing 100049, Peoples R China
推荐引用方式 GB/T 7714	Lin, Jian,Huang, Yanqiang,Li, Lin,et al. Activation of an Ir-in-CeO2 catalyst by pulses of CO: The role of oxygen vacancy and carbonates in CO oxidation[J]. catalysis today,2012,180(1):155-160.
APA	Lin, Jian.,Huang, Yanqiang.,Li, Lin.,Wang, Aiqin.,Zhang, Wansheng.,...&Zhang, Tao.(2012).Activation of an Ir-in-CeO2 catalyst by pulses of CO: The role of oxygen vacancy and carbonates in CO oxidation.catalysis today,180(1),155-160.
MLA	Lin, Jian,et al."Activation of an Ir-in-CeO2 catalyst by pulses of CO: The role of oxygen vacancy and carbonates in CO oxidation".catalysis today 180.1(2012):155-160.