Development of a correlation equation between the diesterification of maleic anhydride and the acidic ionic liquids nature  

作　　者：Yumei Liu Shengxin Chen Ran An Xingsheng Wang Ruixia Liu 

机构地区：[1]Beijing Key Laboratory of Ionic Liquids Clean Process,CAS Key Laboratory of Green Process and Engineering,State Key Laboratory of Multiphase Complex Systems,Institute of Process Engineering,Innovation Academy for Green Manufacture,Chinese Academy of Sciences,Beijing,100190,China [2]Innovation Academy for Green Manufacture,Chinese Academy of Sciences,Beijing,100190,China [3]School of Chemical Engineering and Energy,Zhengzhou University,Zhengzhou,450001,China [4]Department of Chemistry,School of Chemical Engineering,Dalian University of Technology,Dalian,116023,China

出　　处：《Green Chemical Engineering》2023年第1期57-63,共7页绿色化学工程（英文）

基　　金：supported by the National Natural Science Foundation of China(21878315);the National Key Research and Development Program of China(2017YFA0206803);the Key Programs of the Chinese Academy of Sciences(KFZD-SW-413);the Key Programs of Innovation Academy for Green Manufacture,CAS(IAGM2020C17)。

摘　　要：The sustainable synthesis of dimethyl maleate via diesterification through the utilization of ionic liquid(IL)is of great importance.However,the relationship between the ILs nature and the reactivity of diesterification is still unclear.Herein,a series of ILs with different structures were selected for the comprehensive investigation of diesterification.The acidity(H_(0))and Kamlet-Taft solvent parameters(hydrogen bond donor ability(α),hydrogen bond acceptor ability(β),and polarizability(π^(*)))of ILs were measured by UV–Visible spectroscopy,and the effects of them on the diesterification of maleic anhydride were also studied in detail.The results indicated that not only H0of the IL-based catalysis system,but also itsα,β,andπ^(*)influenced the reaction activity of diesterification.Furthermore,a quantifiable correlation was fitted between the natural logarithm of the rate constant and multiple parameters of ILs,indicating that the diesterification rate had a positive correlation with the H0,α,andπ^(*),and inverse correlation with theβof the IL.A plausible synergetic reaction mechanism for the excellent performance of[(HSO_(3))PMim][HSO_(4)]has been proposed.Overall,this work thoroughly explored the relationship between the nature of ILs on diesterification in-depth,which will reveal the nature of diesterification in detail.

关 键 词：Multiparameter correlation equation Diesterification Maleic anhydride Ionic liquids Kamlet-Taft solvent parameters 

分 类 号：TQ225.24[化学工程—有机化工] O645.1[理学—物理化学]