DICP OpenIR
Subject Area物理化学
Activation of an Ir-in-CeO2 catalyst by pulses of CO: The role of oxygen vacancy and carbonates in CO oxidation
Lin, Jian1,2; Huang, Yanqiang1; Li, Lin1; Wang, Aiqin1; Zhang, Wansheng1; Wang, Xiaodong1; Zhang, Tao1; Zhang T(张涛); Wang XD(王晓东)
KeywordIridium Ceo2 Oxygen Vacancy Carbonates Co Oxidation
Source PublicationCATALYSIS TODAY
2012-01-17
DOI10.1016/j.cattod.2011.03.066
Volume180Issue:1Pages:155-160
Indexed BySCI
SubtypeArticle
Department15
Funding Project1501
Contribution Rank1,1
WOS HeadingsScience & Technology ; Physical Sciences ; Technology
WOS SubjectChemistry, Applied ; Chemistry, Physical ; Engineering, Chemical
WOS Research AreaChemistry ; Engineering
WOS KeywordWATER-GAS-SHIFT ; GOLD-CERIA CATALYSTS ; SELECTIVE OXIDATION ; TEMPERATURE ; ADSORPTION ; CEO2 ; SURFACE ; MONOXIDE ; STORAGE ; PT/CEO2
AbstractAn 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.
Language英语
WOS IDWOS:000298967600021
Citation statistics
Cited Times:14[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://cas-ir.dicp.ac.cn/handle/321008/117891
Collection中国科学院大连化学物理研究所
Corresponding AuthorZhang T(张涛); Wang XD(王晓东)
Affiliation1.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
Recommended Citation
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.,...&王晓东.(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.
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