摘要
以二氯化镍为原料制得配合物(DME)Ni Cl2(1);以2,6-二异丙基苯胺和丁二酮为原料,经缩合反应制得α-二亚胺配体(2);1与2经络合反应合成了一种用于乙烯齐聚制备超支化聚乙烯的新型链行走催化剂(3),其结构经IR,XRD和元素分析表征。以乙烯齐聚为探针反应,考察了助催化剂,反应温度和反应时间对3催化活性的影响。结果表明:在较优反应条件[Al Et30.14 mol,n(Al)∶n(Ni)=600,于20℃反应0.5 h]下,3催化活性为2.5×106g PE·(mol·Ni·h·MPa)-1。齐聚产物为支化聚乙烯,部分支链中碳原子数大于4。
A complex, （DME）NiC12 （1）, was prepared from NiC12. A α-diimine ligand（2） was ob- tained by condensation reaction of 2,6-di-tert-butylphenol with butanedione. An novel chain walking catalyst（3） for preparing branched polyethylene by oligomerzation of ethylene was synthesized by complex reaction of 1 with 2. The structure was characterized by IR, XRD and elemental analysis. Effects of promoter, reaction temperature and reaction time on the catalytic activities of 3 were investi- gated by ethylene oligomerzation. The results showed that the catalytic activity of 3 was 2.5×10^6g PE·（mol·Ni·h·MPa）-1 under the reaction conditions[ A1Et3 0.14 tool, n（A1） ： n（Ni） = 600, at 20 ℃ for 0.5 h ]. The polymerization product was branched polyethylene and the carbon number of branched chain was above 4.
出处
《合成化学》
CAS
CSCD
2015年第3期198-201,共4页
Chinese Journal of Synthetic Chemistry
基金
国家大学生创新性实验计划资助项目(201210220010)
黑龙江省教育厅资助项目(12521062)
关键词
链行走催化剂
乙烯齐聚
支化聚乙烯合成
催化活性
chain walking catalyst
oligomerzation of ethylene
branched polyethylene
synthesis
catalytic activity
