文档介绍：
有机化 SiO2 负载α-二亚胺镍催化乙烯淤
浆聚合#
郭春文1,2,范宏1,王轶1**
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(1. 浙江大学化学工程与生物工程学系,化学工程联合国家重点实验室,杭州,310027;
2. 重庆交通大学应用化学系)
摘要:采用四乙氧基硅烷(TEOS)和二氢月桂烯醇型硅烷偶联剂(CA)水解制得三种 SiO2载体,并应用于
α-二亚胺镍催化剂 Ar-N=C(R1)C(R2)=N-ArNiBr2 [R1=CH3,R2=C2H5;Ar=2, 6-dimethylphenyl] 的负载
化,分别制得 SiO2负载催化剂 SC1、有机化 SiO2负载催化剂 SC2 和 SC3。利用负载催化剂进行了乙烯常压
淤浆聚合,考察了载体组成、聚合温度等因素对乙烯聚合活性、聚乙烯分子量、分子链微结构和热性能的
影响。
关键词:后过渡金属催化剂;负载化;乙烯聚合
中图分类号:;
Ethylene slurry polymerization catalyzed with supported
α-diimine nickel ano-modified SiO2
Guo Chunwen1,2, Fan Hong1, Wang Yi1
(1. Department of Chemical & Biological Engineering, State Key Laboratory of Chemical
Engineering, Zhejiang University,Hangzhou,310027;
2. Department of Applied Chemistry, Chongqing Jiaotong University)
Abstract: Three SiO2 carriers synthesized through hydrosis reaction with tetroethyloxysilane and CA
were used to support α-diimine nickel Ar-N=C(R1)C(R2)=N-ArNiBr2 [R1=CH3,R2=C2H5;Ar=2,
6-dimethylphenyl],preparing SiO2 supported catalyst SC1, organo-modified SiO2 supported catalysts
SC2 and SC3. Using these catalysts, ethylene slurry polymerizations were carried out. The influences
of position of carriers as well as the polymerization conditions on the ethylene
polymerization activity, polyethylene molecular weight, polyethylene chain microstructures and
thermal properties were investegated.
Key words: late-tran