Enhanced conversion of α-cellulose to 5-HMF in aqueous biphasic system catalyzed by FeCl_(3)-CuCl_(2)  

作　　者：Lilin Zhang Yinbing Tian Yuanyuan Wang Liyi Dai 

机构地区：[1]Shanghai Key Laboratory of Green Chemistry and Green Process,College of Chemistry and Molecular Engineering,East China Normal University,Shanghai 200241,China

出　　处：《Chinese Chemical Letters》2021年第7期2233-2238,共6页中国化学快报（英文版）

基　　金：finally supported by the National Natural Science Foundation of China(No.22078103);National Key Research and Development Project(No.SQ2019YFE011926);the Key Project of Science and Technology Commission of Shanghai Municipality(No.18DZ1112700);Shanghai Natural Science Fund(No.18ZR1411100)。

摘　　要：This study was to investigate the optimal additions of the cellulose decomposition reaction to obtain the most yield of 5-HMF and other furan derivatives in various biphasic systems with FeCl_(3)-CuCl_(2) mixed catalysts,and explore its depolymerization kinetics.A series of controllable reactions have been performed under mild environmentally friendly atmosphere.The experiment results showed that49.13 wt%of 5-HMF was the maximum production along with 2.98 wt%other furan derivatives catalyzed by mixed Lewis acid FeCl_(3)-CuCl_(2) under the two phases which included high concentration NaCl aqueous phase and n-butanol organic phase at 190℃for 45 min.The conclusion suggested that two-phase systems benefited the yield of 5-HMF,furan derivatives via extracting the target products from reaction phase to organic phase to avoid rehydration of 5-HMF.The kinetic calculation revealed the conversion with mixed catalysts had lower reaction apparent activation energy(21.65 kJ/mol,190-230℃)and the reaction rate was faster than that with acid-based catalysts.Based on experiment exploration,the probable mechanism of cellulose decomposition with FeCl_(3)-CuCl_(2) was proposed.

关 键 词：CELLULOSE Two phase Mixed catalysts DEPOLYMERIZATION 5-HMF 

分 类 号：O626.11[理学—有机化学] O643.36[理学—化学]