High activity and good hydrogen response silica-supported Ziegler-Natta catalyst for ethylene polymerization

被引：4

作者：

Jiang, Tao ^{[1
,2
]}

Zhao, Li-na ^{[1
]}

Luo, Ming-jian ^{[2
]}

Chen, Hong-xia ^{[1
]}

Mao, Guo-liang ^{[2
]}

Cao, Chen-gang ^{[1
]}

Ning, Ying-nan ^{[2
]}

机构：

[1] Tianjin Univ Sci & Technol, Coll Mat Sci & Chem Engn, Tianjin 300457, Peoples R China

[2] NE Petr Univ, Coll Chem & Chem Engn, Daqing 163318, Peoples R China

来源：

CHINESE JOURNAL OF POLYMER SCIENCE | 2012年 / 30卷 / 04期

基金：

中国国家自然科学基金;

关键词：

Ziegler-Natta catalyst; Ethylene polymerization; Silica; Dimethyldichlorosilane;

D O I：

10.1007/s10118-012-1141-3

中图分类号：

O63 [高分子化学（高聚物）];

学科分类号：

070305 ; 080501 ; 081704 ;

摘要：

A silica-supported Ziegler-Natta catalyst with dimethyldichlorosilane (DMDS) as modifier and small silica as support was successfully prepared and characterized. Results from pilot screen showed that the new catalyst exhibited higher catalytic activity, better hydrogen response ability and better copolymerization ability than the commercial M catalyst. Pilot screen in ethylene gas phase fluidized bed polymerization, the catalytic activity of the new catalyst was up to 8000 g PE/g cat, which was twice of that of the commercial M catalyst. The bulk density of polyethylene obtained with the new catalyst was 0.38 g/cm(3). The new catalyst is suitable for condensed and super-condensed process in fluidized bed ethylene polymerization.

引用

页码：561 / 567

页数：7

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