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学科主题物理化学
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)
关键词Iridium Ceo2 Oxygen Vacancy Carbonates Co Oxidation
刊名CATALYSIS TODAY
2012-01-17
DOI10.1016/j.cattod.2011.03.066
180期:1页:155-160
收录类别SCI
文章类型Article
部门归属15
项目归属1501
产权排名1,1
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
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.
语种英语
WOS记录号WOS:000298967600021
引用统计
被引频次:13[WOS]   [WOS记录]     [WOS相关记录]
文献类型期刊论文
条目标识符http://cas-ir.dicp.ac.cn/handle/321008/117891
专题中国科学院大连化学物理研究所
通讯作者Zhang T(张涛); Wang XD(王晓东)
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
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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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