CAS OpenIR  > 研究所(批量导入)
Oxidative dehydrogenation of ethane with carbon dioxide to ethylene over nanosized Cr2O3 catalysts
Alternative TitleChin. J. Catal.
Deng, S; Li, HQ; Zhang, Y
2003-10-01
Source PublicationCHINESE JOURNAL OF CATALYSIS
ISSN0253-9837
Volume24Issue:10Pages:744-750
AbstractThe nanosized Cr2O3 was prepared by sol-gel coupling with azeotropic distillation method. The size distribution of the nanosized Cr2O3, statistically determined by TEM, was narrowly ranging from 20 to 40 nm. The nanosized composite catalysts Cr2O3/Al2O3, Cr2O3/ZrO2 and Cr2O3/MgO were prepared by coprecipitation coupling with azeotropic distillation method. Calculated by using Scherrer equation, the average diameters of the nanosized composite catalysts were 8, 12 and 6 nm, respectively. The catalytic performance of these nanosized catalysts in oxidative dehydrogenation of ethane with carbon dioxide to ethylene was investigated. The result showed that the nanosized Cr2O3 catalyst exhibited much higher ethane conversion and lower ethylene selectivity than the normal Cr2O3 catalyst. The catalytic activity of the nanosized composite catalysts varied with the nature of the composites. Cr2O3/ZrO2 catalyst showed the highest ethane conversion and the lowest ethylene selectivity among the nanosized composite catalysts. The ethylene yield over Cr2O3/Al2O3 catalyst was very low but it exhibited the highest ethylene selectivity. 10% Cr2O3/MgO catalyst exhibited excellent catalytic performance in the reaction, producing 61.54% ethane conversion and 94.79% ethylene selectivity at 973 K. These nanosized catalysts were characterized by BET, XRD, TEM, FT-IR, XPS and TPR techniques. The reducibility of Cr and Cr6+/Cr3+ ratio in the nanosized catalysts determined the catalytic performance in the oxidative dehydrogenation of ethane with carbon dioxide.; The nanosized Cr2O3 was prepared by sol-gel coupling with azeotropic distillation method. The size distribution of the nanosized Cr2O3, statistically determined by TEM, was narrowly ranging from 20 to 40 nm. The nanosized composite catalysts Cr2O3/Al2O3, Cr2O3/ZrO2 and Cr2O3/MgO were prepared by coprecipitation coupling with azeotropic distillation method. Calculated by using Scherrer equation, the average diameters of the nanosized composite catalysts were 8, 12 and 6 nm, respectively. The catalytic performance of these nanosized catalysts in oxidative dehydrogenation of ethane with carbon dioxide to ethylene was investigated. The result showed that the nanosized Cr2O3 catalyst exhibited much higher ethane conversion and lower ethylene selectivity than the normal Cr2O3 catalyst. The catalytic activity of the nanosized composite catalysts varied with the nature of the composites. Cr2O3/ZrO2 catalyst showed the highest ethane conversion and the lowest ethylene selectivity among the nanosized composite catalysts. The ethylene yield over Cr2O3/Al2O3 catalyst was very low but it exhibited the highest ethylene selectivity. 10% Cr2O3/MgO catalyst exhibited excellent catalytic performance in the reaction, producing 61.54% ethane conversion and 94.79% ethylene selectivity at 973 K. These nanosized catalysts were characterized by BET, XRD, TEM, FT-IR, XPS and TPR techniques. The reducibility of Cr and Cr6+/Cr3+ ratio in the nanosized catalysts determined the catalytic performance in the oxidative dehydrogenation of ethane with carbon dioxide.
KeywordNanosized Catalyst Chromia Alumina Zirconia Magnesia Carbon Dioxide Ethane Oxidative Dehydrogenation Ethylene
SubtypeArticle
WOS HeadingsScience & Technology ; Physical Sciences ; Technology
URL查看原文
Indexed BySCI
Language英语
WOS KeywordOXIDE CATALYSTS ; CO2 ; C2H4
WOS Research AreaChemistry ; Engineering
WOS SubjectChemistry, Applied ; Chemistry, Physical ; Engineering, Chemical
WOS IDWOS:000186595800007
Citation statistics
Cited Times:12[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Version出版稿
Identifierhttp://ir.ipe.ac.cn/handle/122111/5320
Collection研究所(批量导入)
AffiliationChinese Acad Sci, Inst Proc Engn, Beijing 100080, Peoples R China
Recommended Citation
GB/T 7714
Deng, S,Li, HQ,Zhang, Y. Oxidative dehydrogenation of ethane with carbon dioxide to ethylene over nanosized Cr2O3 catalysts[J]. CHINESE JOURNAL OF CATALYSIS,2003,24(10):744-750.
APA Deng, S,Li, HQ,&Zhang, Y.(2003).Oxidative dehydrogenation of ethane with carbon dioxide to ethylene over nanosized Cr2O3 catalysts.CHINESE JOURNAL OF CATALYSIS,24(10),744-750.
MLA Deng, S,et al."Oxidative dehydrogenation of ethane with carbon dioxide to ethylene over nanosized Cr2O3 catalysts".CHINESE JOURNAL OF CATALYSIS 24.10(2003):744-750.
Files in This Item:
File Name/Size DocType Version Access License
纳米Cr_2O_3系列催化剂上CO_2氧(271KB) 限制开放CC BY-NC-SAApplication Full Text
Related Services
Recommend this item
Bookmark
Usage statistics
Export to Endnote
Google Scholar
Similar articles in Google Scholar
[Deng, S]'s Articles
[Li, HQ]'s Articles
[Zhang, Y]'s Articles
Baidu academic
Similar articles in Baidu academic
[Deng, S]'s Articles
[Li, HQ]'s Articles
[Zhang, Y]'s Articles
Bing Scholar
Similar articles in Bing Scholar
[Deng, S]'s Articles
[Li, HQ]'s Articles
[Zhang, Y]'s Articles
Terms of Use
No data!
Social Bookmark/Share
All comments (0)
No comment.
 

Items in the repository are protected by copyright, with all rights reserved, unless otherwise indicated.