Hydrous pyrolysis of polystyrene

被引：10

作者：

Beltrame, PL ^{[1
]}

Bergamasco, L ^{[1
]}

Carniti, P ^{[1
]}

Castelli, A ^{[1
]}

Bertini, F ^{[1
]}

Audisio, G ^{[1
]}

机构：

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

来源：

JOURNAL OF ANALYTICAL AND APPLIED PYROLYSIS | 1997年 / 40-1卷

关键词：

polystyrene; degradation; water; kinetics; hydrous pyrolysis;

D O I：

10.1016/S0165-2370(96)00977-1

中图分类号：

O65 [分析化学];

学科分类号：

070302 ; 081704 ;

摘要：

Thermal degradation of polystyrene has been investigated in the presence of water under subcritical conditions (hydrous pyrolysis). The experiments were carried out in closed systems under inert atmosphere, in the temperature range 300-350 degrees C, at pressures up to 18 MPa, for 1-120 h. The products obtained, separated as gases, volatiles, and heavy compounds, were analyzed qualitatively and quantitatively by gas-chromatography, gas-chromatography/mass spectrometry and size exclusion chromatography. The results showed that the presence of water increases the yields of the volatile products, mainly in the first steps of the pyrolytic process, and leads to higher yields of monomer. This latter observation suggests a lowering of the secondary reactions extent. (C) 1997 Elsevier Science B.V.

引用

页码：451 / 461

页数：11

共 20 条

[1] CATALYTIC DEGRADATION OF POLYOLEFINS [J].