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: Structural changes of Au-Cu bimetallic catalysts in CO oxidation: In situ XRD, EPR, XANES, and FT-IR characterizations
作者: Liu, Xiaoyan1, 3;  Wang, Aiqin3;  Li, Lin3;  Zhang, Tao3;  Mou, Chung-Yuan1;  Lee, Jyh-Fu2
通讯作者: 张涛 ;  牟中原
关键词: Gold ;  Copper ;  Bimetallic ;  CO oxidation ;  XANES ;  EPR ;  FT-IR ;  In situ XRD
刊名: JOURNAL OF CATALYSIS
发表日期: 2011-03-07
DOI: 10.1016/j.jcat.2010.12.016
卷: 278, 期:2, 页:288-296
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, Physical ;  Engineering, Chemical
摘要: Structural changes of Au-Cu bimetallic catalysts in CO oxidation: In situ XRD, EPR, XANES, and FT-IR characterizations
研究领域[WOS]: Chemistry ;  Engineering
英文摘要: Au-Cu bimetallic nanoparticles supported on SBA-15 have been reported to be much more active in CO oxidation than the corresponding monometallic counterparts in our previous work. In this work, in situ techniques including XRD, EPR, XANES, and FT-IR were employed to reveal the structural changes of the Au-Cu bimetallic particles during different pretreatment and reaction conditions, and to clarify the essence of the synergistic effect between gold and copper. The results showed that gold remained as Au(0) in any treatment conditions, while copper was very sensitive to the treatment temperature and atmosphere. The freshly reduced catalyst was a mixture of Au(3)Cu(1) intermetallic phase and Cu(2)O amorphous phase. In CO oxidation, the Au(3)Cu(1) intermetallic phase was segregated into a gold core decorated with tiny CuO(x) patches, and CO adsorbed on Au(0) reacted with active oxygen provided by the neighboring CuO(x) thus enhancing greatly the activity for CO oxidation. (C) 2010 Elsevier Inc. All rights reserved.
关键词[WOS]: METHANOL FUEL-CELLS ;  GOLD NANOPARTICLES ;  ROOM-TEMPERATURE ;  SELECTIVE OXIDATION ;  ALLOY NANOPARTICLES ;  PROPENE EPOXIDATION ;  MESOPOROUS SUPPORT ;  AU/SIO2 CATALYST ;  ADSORBED CO ;  ACTIVE GOLD
语种: 英语
WOS记录号: WOS:000288294600013
Citation statistics: 
内容类型: 期刊论文
URI标识: http://cas-ir.dicp.ac.cn/handle/321008/115806
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
201136TXWq7jFO.pdf(605KB)----开放获取--View Download

作者单位: 1.Natl Taiwan Univ, Dept Chem, Taipei 10617, Taiwan
2.Natl Synchrotron Radiat Res Ctr, Hsinchu 30076, Taiwan
3.Chinese Acad Sci, Dalian Inst Chem Phys, Dalian 116023, Peoples R China

Recommended Citation:
Liu, Xiaoyan,Wang, Aiqin,Li, Lin,et al. Structural changes of Au-Cu bimetallic catalysts in CO oxidation: In situ XRD, EPR, XANES, and FT-IR characterizations[J]. JOURNAL OF CATALYSIS,2011,278(2):288-296.
Service
 Recommend this item
 Sava as my favorate item
 Show this item's statistics
 Export Endnote File
Google Scholar
 Similar articles in Google Scholar
 [Liu, Xiaoyan]'s Articles
 [Wang, Aiqin]'s Articles
 [Li, Lin]'s Articles
CSDL cross search
 Similar articles in CSDL Cross Search
 [Liu, Xiaoyan]‘s Articles
 [Wang, Aiqin]‘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: 201136TXWq7jFO.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