文献类型：期刊文献

英文题名：Kinetic modeling of liquid-phase oxidation of p-xylene to p-toluic acid in absence of solvent

作者：Li, Yudong[1];Chen, Lejian[1];Ma, Zhihong[1];Wang, Shuangfu[1];Yuan, Fang[1];Sun, Weizhen[1];Zheng, Weizhong[1];Zhao, Ling[1]

机构：[1]East China Univ Sci & Technol, Sch Chem Engn, State Key Lab Chem Engn, Shanghai 200237, Peoples R China

年份：2025

卷号：514

外文期刊名：CHEMICAL ENGINEERING JOURNAL

收录：;EI(收录号：20251818360876);WOS:【SCI-EXPANDED(收录号:WOS:001487752200003)】；

基金：The financial support by the National Key Research and Develop-ment Project (2022YFC2104504) is gratefully acknowledged.

语种：英文

外文关键词：P-xylene oxidation; No solvent; Kinetic modeling; Gas-liquid mass transfer

摘要：p-toluic acid (p-TA) is an essential raw material to meet the rapidly growing demands of chemical industrial development. Several studies have addressed process intensifications or catalysts development of the traditional p-xylene (PX) oxidation process in public literature, even on an industrial scale. However, limited in-depth research has been reported on developing kinetic models for PX oxidation to p-TA, particularly under conditions without acetic acid and bromide salts. In this work, a novel synthesis pathway has been developed for the mild condition preparation of p-TA, specifically without bromine, and in the absence of acetic acid as a solvent. The kinetics model incorporating oxygen concentration and mass transfer was established to predict the PX oxidation behaviors. Semicontinuous and continuous experiments have demonstrated that the proposed kinetics model accurately predicts PX oxidation behaviors under oxygen-rich,-poor, and various mass transfer conditions. This work provides valuable insights into the oxidation of aromatic compounds and the kinetic modeling process under conditions of solvent-free and complex mass transfer.