中国科学院大连化学物理研究所机构知识库
Advanced  
DICP OpenIR  > 中国科学院大连化学物理研究所  > 期刊论文
学科主题: 物理化学
题名: Activation of an Ir-in-CeO2 catalyst by pulses of CO: The role of oxygen vacancy and carbonates in CO oxidation
作者: Lin, Jian1, 2;  Huang, Yanqiang1;  Li, Lin1;  Wang, Aiqin1;  Zhang, Wansheng1;  Wang, Xiaodong1;  Zhang, Tao1
通讯作者: 张涛 ;  王晓东
关键词: Iridium ;  CeO2 ;  Oxygen vacancy ;  Carbonates ;  CO oxidation
刊名: CATALYSIS TODAY
发表日期: 2012-01-17
DOI: 10.1016/j.cattod.2011.03.066
卷: 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
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.
关键词[WOS]: WATER-GAS-SHIFT ;  GOLD-CERIA CATALYSTS ;  SELECTIVE OXIDATION ;  TEMPERATURE ;  ADSORPTION ;  CEO2 ;  SURFACE ;  MONOXIDE ;  STORAGE ;  PT/CEO2
语种: 英语
WOS记录号: WOS:000298967600021
Citation statistics: 
内容类型: 期刊论文
URI标识: http://cas-ir.dicp.ac.cn/handle/321008/117891
Appears in Collections:中国科学院大连化学物理研究所_期刊论文

Files in This Item: Download All
File Name/ File Size Content Type Version Access License
2012sHS6qG6aNM.PDF(482KB)----开放获取--View Download

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

Recommended Citation:
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.
Service
 Recommend this item
 Sava as my favorate item
 Show this item's statistics
 Export Endnote File
Google Scholar
 Similar articles in Google Scholar
 [Lin, Jian]'s Articles
 [Huang, Yanqiang]'s Articles
 [Li, Lin]'s Articles
CSDL cross search
 Similar articles in CSDL Cross Search
 [Lin, Jian]‘s Articles
 [Huang, Yanqiang]‘s Articles
 [Li, Lin]‘s Articles
Related Copyright Policies
Null
Social Bookmarking
  Add to CiteULike  Add to Connotea  Add to Del.icio.us  Add to Digg  Add to Reddit 
文件名: 2012sHS6qG6aNM.PDF
格式: Adobe PDF
此文件暂不支持浏览
所有评论 (0)
暂无评论
 
评注功能仅针对注册用户开放,请您登录
您对该条目有什么异议,请填写以下表单,管理员会尽快联系您。
内 容:
Email:  *
单位:
验证码:   刷新
您在IR的使用过程中有什么好的想法或者建议可以反馈给我们。
标 题:
 *
内 容:
Email:  *
验证码:   刷新

Items in IR are protected by copyright, with all rights reserved, unless otherwise indicated.

 

 

Valid XHTML 1.0!
Powered by CSpace