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

被引：7

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

来源：

CHEMICAL ENGINEERING SCIENCE | 2021年 / 232卷

基金：

中国国家自然科学基金;

关键词：

Kinetic model; Catalytic oxidation; p-xylene; m-xylene; KINETIC-MODEL; METAL/BROMIDE CATALYSTS; INDUSTRIAL OXIDATION; REACTION-MECHANISM; ACETIC-ACID; AUTOXIDATION; COBALT; ACETATE; WATER;

D O I：

10.1016/j.ces.2020.116340

中图分类号：

TQ [化学工业];

学科分类号：

0817 ;

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.

引用

页数：11

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