Analysis of Thermodynamics and Study of Macrokinetics for Oxidation of 1,2,4,5-Tetramethylbenzene to Pyromellitic Dianhydride
1. Institute of Chemistry and Applied Chemistry, ChangJi College, ChangJi 831100, China;
2. Chemical Engineering Institute, Xiamen University, Xiamen 361000, China
Abstract：The thermodynamics and macrokinetics about the synthesis of pyromellitic dianhydride (PMDA) via 1,2,4,5-tetramethylbenzene(MTBZ) oxidation were studied in order to improve the yield of PMDA. The relationship between reaction enthalpy, Gibbs free energy and temperature of reactions in oxidation process was obtained by thermodynamic analysis. In addition, a possible parallel-series reaction network was proposed and a power-type macro-kinetic model for the oxidation of MTBZ to PMDA was established. The study results of thermodynamics and kinetics provides theoretical guidance to reasonably determine the process parameters such as the ratio of MTBZ to oxygen, residence time, reaction temperature and so on.
Cao Ling 1,Xue Laiqi 1,Chen Binghui 1 et al. Analysis of Thermodynamics and Study of Macrokinetics for Oxidation of 1,2,4,5-Tetramethylbenzene to Pyromellitic Dianhydride[J]. 化学反应工程与工艺, 2018, 34(5): 467-472.
