Silica-supported metallocene for ethylene polymerization

被引：21

作者：

Belelli, PG ^{[1
]}

Ferreira, ML ^{[1
]}

Damiani, DE ^{[1
]}

机构：

[1] UNS, CONICET, PLAPIQUI, RA-8000 Bahia Blanca, Buenos Aires, Argentina

来源：

APPLIED CATALYSIS A-GENERAL | 2002年 / 228卷 / 1-2期

关键词：

metallocene-supported catalyst; ethylene polymerization; Lewis acid effect;

D O I：

10.1016/S0926-860X(01)00976-0

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

We analyzed the effect of the addition of a Lewis acid (AlCl3) or a Lewis base (EB-ethyl benzoate) to the supported system rac-EtInd(2)ZrCl(2)/MAO/SiO2. We studied the additive effect in two different ways: as external and internal component. The results indicate that the additives are acting in different manners depending on the method of addition and the type of additive. An important result was obtained when the Lewis acid was added as an internal component. The molar ratio [MAO]: [AlCl3] of the co-impregnation step would be the most important factor to obtain an active supported catalyst. (C) 2002 Elsevier Science B.V. All rights reserved.

引用

页码：189 / 202

页数：14

共 46 条

[1]

BARRON AR, 1994, HAMBURGER MACKROMOLE, P1

[2]

Belelli PG, 2000, MACROMOL CHEM PHYS, V201, P1458, DOI 10.1002/1521-3935(20000801)201:13<1458::AID-MACP1458>3.0.CO

[3]

2-1

[4]

BELELLI PG, 2000, CURRENT TRENDS POLYM, P5

[5]

BELELLI PG, 2000, STUD SURF SCI CATA D, V130, P3855

[6]

BLIEMEISTER J, 1995, ZIEGLER CATALYSTS, P57

[7] PROPYLENE POLYMERIZATION THROUGH SUPPORTED METALLOCENE MAO CATALYSTS - KINETIC-ANALYSIS AND MODELING [J].

BONINI, F ;

FRAAIJE, V ;

FINK, G .

JOURNAL OF POLYMER SCIENCE PART A-POLYMER CHEMISTRY, 1995, 33 (14) :2393-2402

[8]

Boor J., 1979, Ziegler-Natta Catalysts and Polymerization

[9]

CERNIA E, 1963, POLYM LETT, V1, P371

[10]

Chu KJ, 2000, J POLYM SCI POL CHEM, V38, P462, DOI 10.1002/(SICI)1099-0518(20000201)38:3<462::AID-POLA10>3.0.CO

← 1 2 3 4 5 →