文献类型：期刊文献

中文题名：超临界甲苯降解聚苯乙烯反应动力学模型

英文题名：Kinetic model of polystyrene degradation in supercritical toluene

作者：黄科[1];唐黎华[1];朱子彬[1];应卫勇[1]

机构：[1]华东理工大学化学工艺研究所,上海200237

年份：2006

卷号：57

期号：4

起止页码：810

中文期刊名：化工学报

外文期刊名：CIESC Journal

收录：CSTPCD;;EI(收录号：2006269966436);Scopus;北大核心:【北大核心2004】；CSCD:【CSCD2011_2012】；

基金：国家自然科学基金项目(20076013).~~

语种：中文

中文关键词：超临界甲苯;聚苯乙烯;降解;动力学模型

外文关键词：supercritical toluene; polystyrene; degradation; kinetic model

摘要：The degradation of polystyrene in supercritical toluene was studied at 310—370℃, 3.6—5.2 MPa by using a novel fast reactor. Supercritical solvents have unique properties such as excellent heat and mass transfer. Compared with thermal degradation without solvents, supercritical degradation obtains high conversion in a very short reaction time. The supercritical degradation of polystyrene is a typical free radical reaction mechanism, including chain fission, disproportionation, radical recombination, β-scission, intermolecular abstraction and intramolecular abstraction. Based on the reaction mechanism, the process of polystyrene degradation in supercritical toluene was modeled at the mechanistic level by using population balance equations formulated via the method of moments. The predictions of the degradation conversion of polystyrene were compared with experimental results, and the agreement was good.
The degradation of polystyrene in supercritical toluene was studied at 310-370℃, 3.6-5.2 MPa by using a novel fast reactor. Supercritical solvents have unique properties such as excellent heat and mass transfer. Compared with thermal degradation without solvents, supercritical degradation obtains high conversion in a very short reaction time. The supercritical degradation of polystyrene is a typical free radical reaction mechanism, including chain fission, disproportionation, radical recombination, β-scission, intermolecular abstraction and intramolecular abstraction. Based on the reaction mechanism, the process of polystyrene degradation in supercritical toluene was modeled at the mechanistic level by using population balance equations formulated via the method of moments. The predictions of the degradation conversion of polystyrene were compared with experimental results, and the agreement was good.