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DMP和PNP的催化性能相比较,综合了两者的优势。
The catalytic activity of the catalyst system composed of Cr（Ⅲ）2-ethylhexanoate [Cr（Ⅲ）2-EH],2,5-dimethylpyrrole（DMP）,diphenylphosphinoamine（PNP）,triethylaluminium（TEA）and 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 MPa,and the selectivity for 1-hexene was more than 95%.Compared with the single ligand DMP or PNP,the catalyst system with composite ligands combined their respective advantages.
出处
《化工进展》
EI
CAS
CSCD
北大核心
2011年第3期520-523,共4页
Chemical Industry and Engineering Progress
基金
中国石油天然气股份有限公司项目(09-07-02-11)
关键词
铬
双膦胺
乙烯
三聚
1-己烯
chromium
diphenylphosphinoamine
ethylene
trimerization
1-hexene
