Cationic polymerization of styrene using mesoporous silica supported aluminum chloride

V  Sage; J H  Clark; D J  Macquarrie

doi:10.1016/S1381-1169(02)00700-8

Cationic polymerization of styrene using mesoporous silica supported aluminum chloride

V Sage, J H Clark, D J Macquarrie

Chemistry

Research output: Contribution to journal › Article › peer-review

Abstract

Mesoporous silica supported aluminum chloride catalysts have been prepared and used as heterogeneous initiators for the cationic polymerization of styrene. Faster reactions with an improved control over molecular weight were obtained compared to the homogeneous Lewis acid. The concentration of silica surface hydroxyl groups has proven to have a major influence on the initiation and transfer reaction rate and on the polymer molecular weight as they Act both as co-catalyst in the initiation process with the Lewis acid and as possible terminating agents. The importance of the support pore size and active center loading on the activity of the catalyst and on the polymer molecular weight have also been examined in detail. Studies on catalyst reuse are also reported. (C) 2002 Elsevier Science B.V. All rights reserved.

Original language	English
Pages (from-to)	349-358
Number of pages	10
Journal	Journal of Molecular Catalysis A: Chemical
Volume	198
Issue number	1-2
DOIs	https://doi.org/10.1016/S1381-1169(02)00700-8
Publication status	Published - 1 May 2003

Keywords

cationic polymerization
mesoporous silica
acid catalyst
AlCl3
SYNDIOTACTIC POLYMERIZATION
INITIATING SYSTEM
CATALYST
SURFACE
CRACKING
SOLIDS

Access to Document

10.1016/S1381-1169(02)00700-8

Cite this

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title = "Cationic polymerization of styrene using mesoporous silica supported aluminum chloride",

abstract = "Mesoporous silica supported aluminum chloride catalysts have been prepared and used as heterogeneous initiators for the cationic polymerization of styrene. Faster reactions with an improved control over molecular weight were obtained compared to the homogeneous Lewis acid. The concentration of silica surface hydroxyl groups has proven to have a major influence on the initiation and transfer reaction rate and on the polymer molecular weight as they Act both as co-catalyst in the initiation process with the Lewis acid and as possible terminating agents. The importance of the support pore size and active center loading on the activity of the catalyst and on the polymer molecular weight have also been examined in detail. Studies on catalyst reuse are also reported. (C) 2002 Elsevier Science B.V. All rights reserved.",

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author = "V Sage and Clark, {J H} and Macquarrie, {D J}",

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TY - JOUR

T1 - Cationic polymerization of styrene using mesoporous silica supported aluminum chloride

AU - Sage, V

AU - Clark, J H

AU - Macquarrie, D J

PY - 2003/5/1

Y1 - 2003/5/1

N2 - Mesoporous silica supported aluminum chloride catalysts have been prepared and used as heterogeneous initiators for the cationic polymerization of styrene. Faster reactions with an improved control over molecular weight were obtained compared to the homogeneous Lewis acid. The concentration of silica surface hydroxyl groups has proven to have a major influence on the initiation and transfer reaction rate and on the polymer molecular weight as they Act both as co-catalyst in the initiation process with the Lewis acid and as possible terminating agents. The importance of the support pore size and active center loading on the activity of the catalyst and on the polymer molecular weight have also been examined in detail. Studies on catalyst reuse are also reported. (C) 2002 Elsevier Science B.V. All rights reserved.

AB - Mesoporous silica supported aluminum chloride catalysts have been prepared and used as heterogeneous initiators for the cationic polymerization of styrene. Faster reactions with an improved control over molecular weight were obtained compared to the homogeneous Lewis acid. The concentration of silica surface hydroxyl groups has proven to have a major influence on the initiation and transfer reaction rate and on the polymer molecular weight as they Act both as co-catalyst in the initiation process with the Lewis acid and as possible terminating agents. The importance of the support pore size and active center loading on the activity of the catalyst and on the polymer molecular weight have also been examined in detail. Studies on catalyst reuse are also reported. (C) 2002 Elsevier Science B.V. All rights reserved.

KW - cationic polymerization

KW - mesoporous silica

KW - acid catalyst

KW - AlCl3

KW - SYNDIOTACTIC POLYMERIZATION

KW - INITIATING SYSTEM

KW - CATALYST

KW - SURFACE

KW - CRACKING

KW - SOLIDS

U2 - 10.1016/S1381-1169(02)00700-8

DO - 10.1016/S1381-1169(02)00700-8

M3 - Article

SN - 1381-1169

VL - 198

SP - 349

EP - 358

JO - Journal of Molecular Catalysis A: Chemical

JF - Journal of Molecular Catalysis A: Chemical

IS - 1-2

ER -