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Design and evaluation of ethylene trimerization catalysts with composite ligands

WANG Yazhen1,2,3,WANG Libo2,CHEN Jie1,WANG Sihan2,YANG Yulin3   

  1. (1School of Material Science and Engineering,Qiqihar University,Qiqihar 161006,Heilongjiang,China;2Daqing Petrochemical Research Center,PetroChina Company Limited,Daqing 163714,Heilongjiang,China;3 Department of Chemical Engineering,Harbin University of Technology,Harbin 150001,Heilongjiang,China)
  • Online:2011-03-05 Published:2011-03-05

乙烯选择性三聚复配催化体系的设计及评价

王雅珍1,2,3,王力博2,陈 洁1,王斯晗2,杨玉林3   

  1. (1齐齐哈尔大学材料科学与工程学院,黑龙江 齐齐哈尔 161006;2中国石油天然气股份有限公司大庆化工研究中心,黑龙江 大庆 163714;3哈尔滨工业大学化工学院,黑龙江 哈尔滨 150001)

Abstract:

The catalytic activity of the catalyst system composed of Cr2-ethylhexanoate [Cr2-EH]2,5-dimethylpyrroleDMP),diphenylphosphinoaminePNP),triethylaluminiumTEAand 1,1,2,2-tetrachloethxane in ethylene trimerization and the selectivity for 1-hexene were studied. The results showed that the catalyst system improved the activity and selectivity simultaneously. A catalyst activity exceeding 270 kg/gCr per hour was achieved at 120 and 5.0 MPaand the selectivity for 1-hexene was more than 95%. Compared with the single ligand DMP or PNPthe catalyst system with composite ligands combined their respective advantages.

摘要:

研究了异辛酸铬[Cr(Ⅲ)2-EH]/2,5-二甲基吡咯(DMP/双膦胺型配体PNP/三乙基铝(TEA/1,1,2,2-四氯乙烷(Cl2CHCHCl2)催化体系对乙烯三聚反应催化剂的活性和1-己烯的选择性的影响。结果表明,复配体系能同时获得高活性和对1-己烯的高选择性。在反应温度120 、压力5.0 MPa下,催化活性达到270 kg/(gCr·h)以上1-己烯选择性超过95%,与单一配体DMPPNP的催化性能相比较,综合了两者的优势。

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