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
题名: Low-temperature oxidation of CO catalysed by Co3O4 nanorods
作者: Xie, Xiaowei1;  Li, Yong1;  Liu, Zhi-Quan2;  Haruta, Masatake3, 4;  Shen, Wenjie1
通讯作者: 申文杰
刊名: NATURE
发表日期: 2009-04-09
DOI: 10.1038/nature07877
卷: 458, 期:7239, 页:746-749
收录类别: SCI
文章类型: Article
部门归属: 5
项目归属: 501
产权排名: 1;1
WOS标题词: Science & Technology
类目[WOS]: Multidisciplinary Sciences
研究领域[WOS]: Science & Technology - Other Topics
英文摘要: Low-temperature oxidation of CO, perhaps the most extensively studied reaction in the history of heterogeneous catalysis, is becoming increasingly important in the context of cleaning air and lowering automotive emissions(1,2). Hopcalite catalysts (mixtures of manganese and copper oxides) were originally developed for purifying air in submarines, but they are not especially active at ambient temperatures and are also deactivated by the presence of moisture(3,4). Noble metal catalysts, on the other hand, are water tolerant but usually require temperatures above 100 degrees C for efficient operation(5,6). Gold exhibits high activity at low temperatures and superior stability under moisture, but only when deposited in nanoparticulate form on base transition-metal oxides(7-9). The development of active and stable catalysts without noble metals for low-temperature CO oxidation under an ambient atmosphere remains a significant challenge. Here we report that tricobalt tetraoxide nanorods not only catalyse CO oxidation at temperatures as low as -77 degrees C but also remain stable in a moist stream of normal feed gas. High-resolution transmission electron microscopy demonstrates that the Co3O4 nanorods predominantly expose their {110} planes, favouring the presence of active Co3+ species at the surface. Kinetic analyses reveal that the turnover frequency associated with individual Co3+ sites on the nanorods is similar to that of the conventional nanoparticles of this material, indicating that the significantly higher reaction rate that we have obtained with a nanorod morphology is probably due to the surface richness of active Co3+ sites. These results show the importance of morphology control in the preparation of base transition-metal oxides as highly efficient oxidation catalysts.
关键词[WOS]: CARBON-MONOXIDE ;  OXIDE CATALYSTS ;  SURFACE ;  POWDERS ;  OXYGEN ;  WATER
语种: 英语
原文出处: 查看原文
WOS记录号: WOS:000265193600037
Citation statistics: 
内容类型: 期刊论文
URI标识: http://cas-ir.dicp.ac.cn/handle/321008/101621
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:

There are no files associated with this item.


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, Inst Met Res, Shenyang Natl Lab Mat Sci, Shenyang 110016, Peoples R China
3.Tokyo Metropolitan Univ, Grad Sch Urban Environm Sci, Dept Appl Chem, Tokyo 1920397, Japan
4.Japan Sci & Technol Agcy, CREST, Kawaguchi, Saitama 3320012, Japan

Recommended Citation:
Xie, Xiaowei,Li, Yong,Liu, Zhi-Quan,et al. Low-temperature oxidation of CO catalysed by Co3O4 nanorods[J]. NATURE,2009,458(7239):746-749.
Service
 Recommend this item
 Sava as my favorate item
 Show this item's statistics
 Export Endnote File
Google Scholar
 Similar articles in Google Scholar
 [Xie, Xiaowei]'s Articles
 [Li, Yong]'s Articles
 [Liu, Zhi-Quan]'s Articles
CSDL cross search
 Similar articles in CSDL Cross Search
 [Xie, Xiaowei]‘s Articles
 [Li, Yong]‘s Articles
 [Liu, Zhi-Quan]‘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 
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