A new chromium-based catalyst coated with paraffin for ethylene oligomerization and the effect of chromium state on oligomerization selectivity
文献类型：期刊论文
| 作者 | Fang, YQ; Liu, YX; Ke, YC; Guo, CY; Zhu, N; Mi, X; Ma, Z; Hu, YL |
| 刊名 | APPLIED CATALYSIS A-GENERAL
 |
| 出版日期 | 2002-08-30 |
| 卷号 | 235期号:1-2页码:33-38 |
| 关键词 | Chromium-based Catalysts Paraffin (Alkanes) Ethylene Oligomerization Trimerization Hexene |
| ISSN号 | 0926-860X |
| 英文摘要 | A new method is proposed in which a chromium-based catalyst system containing chromium(III) tris (2-ethylhexanoate) (Cr(EH)(3)),2,5-dimethylpyrrole(2,5-DMP), GeCl4 and triethylaluminum (TEA) coated with solid paraffin is used for oligomerization of ethylene. GC-MS and H-1-NMR analyses show that the coated catalyst system prepared via this approach is air-insensitive so it can be stored under ambient conditions. The selectivity for 1-hexene is up to 97.91 wt.%, and only slightly decreases when the catalyst system is exposed in air for 24h; in contrast, the selectivity is only 35.6% for its non-coated counterpart. XPS reveals that an attachment of atmospheric oxygen to catalyst makes the chemical state of chromium change from Cr3+ to Cr6+. Such a change, in turn, reduces remarkably its selectivity for 1-hexene. (C) 2002 Elsevier Science B.V. All rights reserved. |
| 语种 | 英语 |
| WOS记录号 | WOS:000178021100004 |
| 出版者 | ELSEVIER SCIENCE BV |
| 源URL | [http://ir.iccas.ac.cn/handle/121111/78811]  |
| 专题 | 中国科学院化学研究所 |
| 通讯作者 | Hu, YL |
| 作者单位 | 1.Chinese Acad Sci, Inst Chem, Ctr Mol Sci, State Key Lab Engn Plast, Beijing 100080, Peoples R China 2.CNPC Key Lab Catalysts, Beijing Lab Catalysts, Beijing 100080, Peoples R China |
| 推荐引用方式 GB/T 7714 | Fang, YQ,Liu, YX,Ke, YC,et al. A new chromium-based catalyst coated with paraffin for ethylene oligomerization and the effect of chromium state on oligomerization selectivity[J]. APPLIED CATALYSIS A-GENERAL,2002,235(1-2):33-38. |
| APA | Fang, YQ.,Liu, YX.,Ke, YC.,Guo, CY.,Zhu, N.,...&Hu, YL.(2002).A new chromium-based catalyst coated with paraffin for ethylene oligomerization and the effect of chromium state on oligomerization selectivity.APPLIED CATALYSIS A-GENERAL,235(1-2),33-38. |
| MLA | Fang, YQ,et al."A new chromium-based catalyst coated with paraffin for ethylene oligomerization and the effect of chromium state on oligomerization selectivity".APPLIED CATALYSIS A-GENERAL 235.1-2(2002):33-38. |
入库方式： OAI收割
来源：化学研究所
浏览0
下载0
收藏0
其他版本
除非特别说明，本系统中所有内容都受版权保护，并保留所有权利。