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在ZSM-5催化剂存在下,用热重分析法对纤维素、聚丙烯(PP)及其混合样品(1∶1)的热解行为进行研究。结果表明:纤维素和PP共催化热解可减少固体残渣的产生,提高碳原子利用率。ZSM-5催化剂可降低纤维素和PP的热解温度。动力学分析结果表明,纤维素和PP共催化热解可用一级反应模型处理,其反应表观活化能降低44.4%~56.1%,PP的加入可提高纤维素的催化热解效率,固体残余减少66.4%。
The pyrolysis behavior of cellulose, polypropylene (PP) and their mixed samples (1: 1) was investigated by thermogravimetric analysis in the presence of ZSM-5 catalyst. The results show that the co-catalyzed pyrolysis of cellulose and PP can reduce the generation of solid residues and increase the utilization rate of carbon atoms. ZSM-5 catalyst can reduce the pyrolysis temperature of cellulose and PP. Kinetic analysis results show that the first-order reaction model of cellulose and PP co-catalyzed pyrolysis can reduce the apparent activation energy of the reaction from 44.4% to 56.1%. The addition of PP can improve the catalytic pyrolysis efficiency of cellulose and reduce the residual of solid 66.4%.