Dual-Active-Site Nature of Magnesium Dichloride-Supported Cyclopentadienyl Titanium Chloride Catalysts Switched by an Activator in Propylene Polymerization

被引：3

作者：

Goto, Keisuke ^{[1
]}

Taniike, Toshiaki ^{[1
]}

Terano, Minoru ^{[1
]}

机构：

[1] Japan Adv Inst Sci & Technol, Sch Mat Sci, Nomi, Ishikawa 9231292, Japan

来源：

MACROMOLECULAR CHEMISTRY AND PHYSICS | 2013年 / 214卷 / 09期

关键词：

metallocene catalysts; polypropylene; statistical analysis; UVvis spectroscopy; ZieglerNatta polymerization; ZIEGLER-NATTA CATALYSTS; OLEFIN POLYMERIZATION; ETHYLENE POLYMERIZATION; STEREOSPECIFIC POLYMERIZATION; METALLOCENE CATALYSTS; ZIRCONOCENE CATALYST; SYSTEM; PROPENE; SPECTRA; MODEL;

D O I：

10.1002/macp.201200662

中图分类号：

O63 [高分子化学（高聚物）];

学科分类号：

070305 ; 080501 ; 081704 ;

摘要：

MgCl2-supported metallocene catalysts often show peculiar catalytic aspects, which are partially similar to both non-supported complexes and traditional ZieglerNatta catalysts. In this study, the active-site natures of various MgCl2-supported cyclopentadienyl Ti chloride catalysts are systematically investigated and compared with traditional catalysts in propylene polymerization. The supported titanocene catalysts offer both metallocene-type and ZieglerNatta-type active-site natures according to the details of the preparation and the activation procedures. The observed dual-active-site natures are plausibly correlated with the valence and charge states of the Ti center.

引用

页码：1011 / 1018

页数：8

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