中华医学超声杂志

应用化学 ›› 1997, Vol. 0 ›› Issue (3): 99-101.

• 研究论文 • 上一篇    下一篇

镍螯合物催化乙烯齐聚制低碳α-烯烃

刘东兵, 宋焕玲, 李达刚   

  1. 中国科学院兰州化学物理研究所, 兰州 730000
  • 收稿日期:1996-10-17 修回日期:1997-03-10 出版日期:1997-06-10 发布日期:1997-06-10

Catalytic Oligomerization of Ethylene to Lower α-Olefins by Nickel Chelate

Liu Dongbing, Song Huanling, Li Dagang   

  1. Lanzhou Institute of Chemical Physics, Chinese Academy of Sciences, Lanzhou 730000
  • Received:1996-10-17 Revised:1997-03-10 Published:1997-06-10 Online:1997-06-10

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539

被引次数

1

摘要： 乙烯齐聚所得到的偶碳数 α-烯烃是生产各种化工产品和日化品的原料, 应用广泛. 近年来由于线性低密聚乙烯(LLDPE)和高密聚乙烯(HDPE)的快速增长对低碳数(C4～C8)α-烯烃的需求增大, 约占整个 α-烯烃需求量的 40%[1]. 我国由于L LDPE的发展对 1-丁烯, 1-己烯的需求也急剧增加。

关键词: 乙烯, 催化齐聚反应, α－烯烃, 镍螯合物

Abstract: The oligomerization of ethylene catalyzed by P-O ligands, diphenylphosphi nobenzoic acid(DPP)and diphenylphosphinoacetic sodium(DPE), has been investigated. In catalytic system DPP/NiCl2·6H2O/NaBH4 the content of lower olefins(C4=～C8=)increases with increase of DPP/Ni molar ratio and the content of higher olefins decreases markedly. Phosphines P(CH3)2Ph, P(OPh)3, P(C4H9)3, PClPh2 and PPh3 added in the catalytic system DPE/NiCl2·6H2O/NaBH4 increase the content of C4= up ot 77.96%～95 29% from 49.45%(without their addition). Among these phosphines only P(C4H9)3 could increase the selectivity to linear α-olefin. The reaction conditions have been investigated.

Key words: ethylene, catalytic oligomerization, α-olefin, nickel chelate

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