文献类型：期刊文献

英文题名：Modeling of the Co-Mn-Br catalyzed liquid phase oxidation of p-xylene to terephthalic acid and m-xylene to isophthalic acid

作者：Lyu, Quanming[1];Dong, Jian[1];He, Renchu[2];Sun, Weizhen[1];Zhao, Ling[1,3]

机构：[1]East China Univ Sci & Technol, Sch Chem Engn, State Key Lab Chem Engn, Shanghai 200237, Peoples R China;[2]East China Univ Sci & Technol, Key Lab Adv Control & Optimizat Chem Proc, Minist Educ, Shanghai 200237, Peoples R China;[3]XinJiang Univ, Sch Chem & Chem Engn, Urumqi 830046, Peoples R China

年份：2021

卷号：232

外文期刊名：CHEMICAL ENGINEERING SCIENCE

收录：;EI(收录号：20205109631314);WOS:【SCI-EXPANDED(收录号:WOS:000608126300008)】；

基金：The financial support by the National Natural Science Foundation of China (Grant No. 61988101) is gratefully acknowledged.

语种：英文

外文关键词：Kinetic model; Catalytic oxidation; p-xylene; m-xylene

摘要：The current kinetics of PX or MX oxidation in liquid phase failed to incorporate the effect of the proposition and concentration of Co-Mn-Br ternary catalyst, although they play a significant role in the oxidation rate and selectivity. In this work, based on the catalytic mechanism of hydrocarbon oxidation and collision theory, a three-parameter model containing the catalyst proposition and concentration was developed. The reliability of this model was confirmed by comparing experimental data at different catalyst concentrations and ratios. The parameters a and b are related to the reactivity of Co and Mn ions respectively, and they are transferrable between PX and MX oxidation. However, the parameter c is only related to the methyl reactivity of PX or MX with Br?. The predicted relative reactivity of PX to MX is close to the famous Hammett structure-reactivity relationship. (C) 2020 Elsevier Ltd. All rights reserved.