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 Unique Role of CaO in Stabilizing the Pt/Al2O3 Catalyst for the Dehydrogenation of Cyclohexane
作者: Yu, Jiafeng1, 3;  Wang, Rui2;  Ren, Shiyuan2;  Sun, Xiaoyan2, 3;  Chen, Chunlin2;  Ge, Qingjie1;  Fang, Wen1, 3;  Zhang, Jian2;  Xu, Hengyong1;  Su, Dang Sheng2
关键词: calcium ;  coke ;  dehydrogenation ;  heterogeneous catalysis ;  platinum
刊名: CHEMCATCHEM
发表日期: 2012-09-01
DOI: 10.1002/cctc.201200067
卷: 4, 期:9, 页:1376-1381
收录类别: SCI
文章类型: Article
WOS标题词: Science & Technology ;  Physical Sciences
类目[WOS]: Chemistry, Physical
研究领域[WOS]: Chemistry
英文摘要: Coke-induced deactivation is one of the major challenges in the field of heterogeneous catalysis. Herein, the performance of the Pt/Al2O3 catalyst for the hydrogen-free dehydrogenation of cyclohexane was improved by doping with a small amount of Ca. The Ca-modified Pt/Al2O3 catalyst exhibited a cyclohexane conversion of 97.0?% and maintained a conversion above 75?% after 48 h, whilst the unmodified catalyst was deactivated from 87.0 to 2.7?% under the same conditions. Characterization techniques, including in situ DRIFT, XPS, thermal analysis, and temperature-programmed techniques, revealed that the presence of Ca effectively suppressed the deep dehydrogenation of H-rich carbonaceous components and promoted coke desorption by increasing the H/C ratio of H-deficient coke. This promotion effect of Ca was also associated with neutralizing the residual Cl ions and promoting immediate dehydrogenation.
关键词[WOS]: TRANSFORM INFRARED-SPECTROSCOPY ;  PT/GAMMA-AL2O3 CATALYST ;  ALKANE DEHYDROGENATION ;  COKE CHARACTERIZATION ;  PLATINUM ;  XPS ;  ADSORPTION ;  METAL ;  METHYLCYCLOHEXANE ;  ISOMERIZATION
语种: 英语
WOS记录号: WOS:000308037400022
Citation statistics: 
内容类型: 期刊论文
URI标识: http://cas-ir.dicp.ac.cn/handle/321008/143142
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, Dept State Key Lab Catalysis Inst, Dalian 116023, Peoples R China
2.Chinese Acad Sci, Inst Met Res, Shenyang Natl Lab Mat Sci, Shenyang 110016, Peoples R China
3.Chinese Acad Sci, Grad Sch, Beijing 100039, Peoples R China

Recommended Citation:
Yu, Jiafeng,Wang, Rui,Ren, Shiyuan,et al. The Unique Role of CaO in Stabilizing the Pt/Al2O3 Catalyst for the Dehydrogenation of Cyclohexane[J]. CHEMCATCHEM,2012,4(9):1376-1381.
Service
 Recommend this item
 Sava as my favorate item
 Show this item's statistics
 Export Endnote File
Google Scholar
 Similar articles in Google Scholar
 [Yu, Jiafeng]'s Articles
 [Wang, Rui]'s Articles
 [Ren, Shiyuan]'s Articles
CSDL cross search
 Similar articles in CSDL Cross Search
 [Yu, Jiafeng]‘s Articles
 [Wang, Rui]‘s Articles
 [Ren, Shiyuan]‘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