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: Microcalorimetric and FT-IR Studies of CO Adsorption on Supported Iridium Catalysts
作者: Wang Xingtang1, 2;  Li Lin1;  Huang Yanqiang1;  Wang Xiaodong1;  Zhang Tao1
关键词: temperature-programmed reduction ;  microcalorimetry ;  infrared spectroscopy ;  iridium ;  alumina ;  silica
刊名: CHINESE JOURNAL OF CATALYSIS
发表日期: 2008-12-01
卷: 29, 期:12, 页:1231-1236
收录类别: SCI
文章类型: Article
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: Ir/Al(2)O(3) and Ir/SiO(2) with Ir loadings of 2%, 10%. and 20% were investigated by H(2) temperature-programmed reduction, microcalorimetry, and FT-IR. For Ir/Al(2)O(3), there existed both Ir(0) and Ir(delta+) Species. A major carbonyl band, varied with the average particle size, was due to CO linearly adsorbed on Ir(0), while an intense pair of bands observed at 2 080 and 2 004 cm (1) was assigned to gem-dicarbonyl species adsorbed on Ir(delta+). The adsorption heat could be the average heat produced by the formation of both gem-dicarbonyl and linear species. The relative intensities of the Ir(0)-CO species were enhanced as the Ir loading with the reduction temperature increased. which led to an increase in the adsorption heat. For Ir/SiO(2) several bands ranged in 2 100 - 2 000 cm (1) were identified and attributed to the linearly bonded CO to larger and smaller Ir(0) clusters. As a result, the adsorption heat maintained almost constant though the loading and the reduction temperature increased.
关键词[WOS]: HYDRAZINE DECOMPOSITION CATALYST ;  CARBON-MONOXIDE ;  STRUCTURAL-CHARACTERIZATION ;  TOLUENE HYDROGENATION ;  EXCESS OXYGEN ;  NO REDUCTION ;  ALUMINA ;  GAMMA-AL2O3 ;  CLUSTERS ;  SPECTROSCOPY
语种: 英语
WOS记录号: WOS:000262385100009
Citation statistics: 
内容类型: 期刊论文
URI标识: http://cas-ir.dicp.ac.cn/handle/321008/141048
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, Dalian 116023, Peoples R China
2.Chinese Acad Sci, Grad Univ, Beijing 100049, Peoples R China

Recommended Citation:
Wang Xingtang,Li Lin,Huang Yanqiang,et al. Microcalorimetric and FT-IR Studies of CO Adsorption on Supported Iridium Catalysts[J]. CHINESE JOURNAL OF CATALYSIS,2008,29(12):1231-1236.
Service
 Recommend this item
 Sava as my favorate item
 Show this item's statistics
 Export Endnote File
Google Scholar
 Similar articles in Google Scholar
 [Wang Xingtang]'s Articles
 [Li Lin]'s Articles
 [Huang Yanqiang]'s Articles
CSDL cross search
 Similar articles in CSDL Cross Search
 [Wang Xingtang]‘s Articles
 [Li Lin]‘s Articles
 [Huang Yanqiang]‘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