Insights into kinetics and reaction mechanism of acid-catalyzed transesterification synthesis of diethyl oxalate  

作　　者：Naiwen Zhang Rui Xia Siyu Wan Xinyang Xiong Jinggang Zhao Jun Zhou Lei Shi 

机构地区：[1]Key Laboratory on Resources Chemicals and Materials of Ministry of Education,Shenyang University of Chemical Technology,Liaoning,Shenyang 110142,China [2]Xinjiang Zhichuang Materials Co.,Ltd.,Shihezi,Xinjiang 832000,China [3]Xinjiang Zhizhen Chemical Engineering Research Center Co.,Ltd.,Shihezi,Xinjiang 832000,China [4]College of Science,Shenyang University of Chemical Technology,Liaoning,Shenyang 110142,China

出　　处：《Resources Chemicals and Materials》2024年第1期93-101,共9页资源化工与材料（英文）

基　　金：funded by the Key Projects of Xinjiang Production and Construction Corps(2022AB007);the Key Projects of innovation team of Xinjiang eighth division Construction Corps 2023TD04);Liaoning Innovation Capability Fund(2021-NLTS-12-02).

摘　　要：The catalytic performance of different acidic catalysts for diethyl oxalate synthesis from the one-step transesterification of dimethyl oxalate and ethanol was evaluated.The effects of different factors(e.g.,acidity,electron accepting capacity,cations type and crystalline water)on the catalytic activity of acidic catalysts were investigated respectively.It was proposed and confirmed that the transesterification reaction catalyzed by a Lewis acid(FeCl3)and a Bronsted acid(H2SO4)follows a first-order kinetic reaction process.In addition,the Lewis acid-catalyzed transesterification processes with different ester structures were used to further explore and understand the speculated reaction mechanism.This work enriches the theoretical understanding of acid-catalyzed transesterification reactions and is of great significance for the development of highly active catalysts for diethyl oxalate synthesis,diminishing the industrial production cost of diethyl oxalate,and developing downstream bulk or high-value-added industrial products.

关 键 词：Diethyl oxalate TRANSESTERIFICATION KINETICS Acidic catalyst Reaction mechanism 

分 类 号：O62[理学—有机化学]