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: The mechanism studies of ethanol oxidation on PdO catalysts by TPSR techniques
作者: Lin, R;  Luo, MF;  Xin, Q;  Sun, GQ
关键词: catalytic oxidation of ethanol ;  PdO/Ce0.75Zr0.25O2 catalyst ;  CO-TPD ;  ethanol-TPSR ;  conversion ;  mechanism
刊名: CATALYSIS LETTERS
发表日期: 2004-03-01
卷: 93, 期:3-4, 页:139-144
收录类别: SCI
文章类型: Article
项目归属: 305
产权排名: 2;1
WOS标题词: Science & Technology ;  Physical Sciences
类目[WOS]: Chemistry, Physical
研究领域[WOS]: Chemistry
英文摘要: The paper studies the direct oxidation of ethanol and CO on PdO/Ce0.75Zr0.25O2 and Ce(0.75)Zr(0.2)5O(2) catalysts. Characterization of catalysts is carried out by temperature-programmed desorption (TPD), temperature-programmed surface reaction (TPSR) techniques to correlate with catalytic properties and the effect of supports on PdO. The simple Ce0.75Zr0.25O2 is in less active for ethanol and CO oxidation. After loaded with PdO, the catalytic activity enhances effectively. Combined the ethanol and CO oxidation activity with CO-TPD and ethanol-TPSR profiles, we can find the more intensive of CO2 desorption peaks, the higher it is for the oxidation of CO and ethanol. Conversion versus yield plot shows the acetaldehyde is the primary product, the secondary products are acetic acid, ethyl acetate and ethylene, and the final product is CO2. A simplified reaction scheme (not surface mechanism) is suggested that ethanol is first oxidized to form intermediate of acetaldehyde, then acetic acid, ethyl acetate and ethylene formed going with the formation of acetaldehyde, acetic acid, ethyl acetate; finally these byproducts are further oxidized to produce CO2. PdO/Ce0.75Zr0.25O2 catalyst has much higher catalytic activity not only for the oxidation of ethanol but also for CO oxidation. Thus the CO poison effect on PdO/Ce0.75Zr0.25O2 catalysts can be decreased and they have the feasibility for application in direct alcohol fuel cell (DAFC) with high efficiency.
关键词[WOS]: CARBON-MONOXIDE ;  REDOX BEHAVIOR ;  CEO2 ;  PALLADIUM ;  PERFORMANCE ;  METHANE ;  ZRO2 ;  VOCS ;  CO
语种: 英语
原文出处: 查看原文
WOS记录号: WOS:000189175900003
Citation statistics: 
内容类型: 期刊论文
URI标识: http://cas-ir.dicp.ac.cn/handle/321008/83483
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
2004VYSP72J0TO.pdf(220KB)----开放获取--View Download

作者单位: 1.Chinese Acad Sci, Dalian Inst Chem Phys, DMFC, Dalian 116023, Peoples R China
2.Zhejiang Normal Univ, Inst Phys Chem, Jinhua 321004, Peoples R China
3.Chinese Acad Sci, Dalian Inst Chem Phys, SKLC, Dalian 116023, Peoples R China

Recommended Citation:
Lin, R,Luo, MF,Xin, Q,et al. The mechanism studies of ethanol oxidation on PdO catalysts by TPSR techniques[J]. CATALYSIS LETTERS,2004,93(3-4):139-144.
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, R]'s Articles
 [Luo, MF]'s Articles
 [Xin, Q]'s Articles
CSDL cross search
 Similar articles in CSDL Cross Search
 [Lin, R]‘s Articles
 [Luo, MF]‘s Articles
 [Xin, Q]‘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: 2004VYSP72J0TO.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