POLYSTYRENE THERMODEGRADATION .3. EFFECT OF ACIDIC CATALYSTS ON RADICAL FORMATION AND VOLATILE PRODUCT DISTRIBUTION

被引：27

作者：

CARNITI, P ^{[1
]}

GERVASINI, A ^{[1
]}

BELTRAME, PL ^{[1
]}

AUDISIO, G ^{[1
]}

BERTINI, F ^{[1
]}

机构：

[1] CNR,IST CHIM MACROMOLEC,I-20133 MILAN,ITALY

来源：

APPLIED CATALYSIS A-GENERAL | 1995年 / 127卷 / 1-2期

关键词：

ACID CATALYSTS; DEGRADATION; POLYSTYRENE; RADICALS;

D O I：

10.1016/0926-860X(95)00044-5

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：

The catalytic degradation of polystyrene, carried out in sealed tubes with different acidic catalysts (i.e,, silica, zeolites, and silica-aluminas), was studied. Two reaction temperatures, 350 and 400 degrees C, for reaction times up to 120 min were investigated. The reaction was followed both by electron spin resonance and gas chromatography-mass spectrometric analysis. The different distributions of Volatile products (C-6-C-24) obtained in the various cases are discussed, arranging the products into groups. An initiation mechanism, involving the formation of radical cations, is proposed for the degradation of polystyrene on strongly acidic catalysts.

引用

页码：139 / 155

页数：17

共 20 条

[1] CATALYTIC DEGRADATION OF POLYOLEFINS [J].