纤维素和聚丙烯共催化热解热重分析及动力学研究

THERMOGRAVIMETRIC ANALYSIS AND KINETICS OF CO-CATALYTIC PYROLYSIS OF CELLULOSE AND POLYPROPYLENE BLENDS

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 mixed sample （1：1） were studied by thermogravimetric analysis in the presence of ZSM-5 catalyst. The results indicate that the co-catalytic pyrolysis of cellulose and PP can reduce the generation of solid waste and improve the utilization of carbon atoms. ZSM-5 catalyst can decrease the pyrolysis temperature of cellulose and PP. The kinetic study results show that the co-catalytic pyrolysis processes can be described as first order reaction model. The apparent activation energy of the reaction is reduced by 44.4%-56.1%, and the addition of PP can improve the catalytic pyrolysis efficiency of cellulose, and the solid residue can reduce 66.4%.