POLYMERIZATION OF STYRENE USING Y-ZEOLITES, USY-ZEOLITES AND BETA-ZEOLITES AS CATALYSTS

Authors
RAMOS AM VITAL J SILVA IF VALENTE H GOMES PT
Citation
Am. Ramos et al., POLYMERIZATION OF STYRENE USING Y-ZEOLITES, USY-ZEOLITES AND BETA-ZEOLITES AS CATALYSTS, Catalysis letters, 51(1-2), 1998, pp. 117-119
Citations number
13
Categorie Soggetti
Chemistry Physical
Journal title
Catalysis letters → ACNP
ISSN journal
1011372X
Volume
51
Issue
1-2
Year of publication
1998
Pages
117 - 119
Database
ISI
SICI code
1011-372X(1998)51:1-2<117:POSUYU>2.0.ZU;2-M
Abstract
The homopolymerisation of styrene is studied in the presence of Y, USY and beta zeolites. High molecular weight polymers, in the range 0.7 x 10(6)-1 x 10(6), are obtained in good yields. The activity of zeolite beta is only slightly increased by calcination of the as-synthesised material, pointing to an important role of the zeolite outer surface. The influence of the catalyst acidity upon the polymer molecular weigh t is evaluated by the use of dealuminated zeolites.