中国科学院机构知识库网格
Chinese Academy of Sciences Institutional Repositories Grid
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

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