Knowledge Management System Of Institute of process engineering,CAS
| Oxidative dehydrogenation of ethane with carbon dioxide to ethylene over nanosized Cr2O3 catalysts | |
| Alternative Title | Chin. J. Catal. |
| Deng, S; Li, HQ; Zhang, Y | |
| 2003-10-01 | |
| Source Publication | CHINESE JOURNAL OF CATALYSIS
 |
| ISSN | 0253-9837 |
| Volume | 24Issue:10Pages:744-750 |
| Abstract | 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.; 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. |
| Keyword | Nanosized Catalyst Chromia Alumina Zirconia Magnesia Carbon Dioxide Ethane Oxidative Dehydrogenation Ethylene |
| Subtype | Article |
| WOS Headings | Science & Technology ; Physical Sciences ; Technology |
| URL | 查看原文 |
| Indexed By | SCI |
| Language | 英语 |
| WOS Keyword | OXIDE CATALYSTS ; CO2 ; C2H4 |
| WOS Research Area | Chemistry ; Engineering |
| WOS Subject | Chemistry, Applied ; Chemistry, Physical ; Engineering, Chemical |
| WOS ID | WOS:000186595800007 |
| Citation statistics | |
| Document Type | 期刊论文 |
| Version | 出版稿 |
| Identifier | http://ir.ipe.ac.cn/handle/122111/5320 |
| Collection | 研究所（批量导入） |
| Affiliation | Chinese 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-SA | Application Full Text | |||
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