Highly efficient synthesis of 1-methoxy-2-propanol using ionic liquid catalysts in a micro-tubular circulating reactor  

作　　者：Yu-Mei Liu Yan Zhou Wen-Qiang Gong Zhang-Min Li Chao-Li Wang Duan-Jian Tao 

机构地区：[1]College of Chemistry and Chemical Engineering,Jiangxi Normal University,Nanchang 330022,China

出　　处：《Green Energy & Environment》2020年第2期147-153,共7页绿色能源与环境（英文版）

基　　金：We thank the National Natural Science Foundations of China(Nos.21566011,31570560);the Jiangxi Province Sponsored Programs for Distinguished Young Scholars(No.20162BCB23026);and the Science&Technology Programs of Jiangxi Province Department of Education(No.GJJ160272)for financial support.

摘　　要：The catalysis of ionic liquids (ILs) in the traditional stirred reactor suffers from insufficient mass and heat transfer, which always needs a long reaction time and results in a low reaction rate. In this work, highly efficient synthesis of 1-methoxy-2-propanol via the alcoholysis reaction of propylene oxide (PO) with methanol was proposed and achieved by the combination of micro-tubular circulating reactor with the IL [N4444] [Buty] catalyst. Compared with the stirred reactor, the rate of alcoholysis reaction in a micro-tubular circulating reactor was found to be significantly improved. The reaction time was remarkably shortened to 20 min from 180 min as well as the yield of 1-methoxy-2-propanol reached 92%. Moreover, the kinetic study further demonstrated that the main reaction rate to 1-methoxy-2-propanol (K1) was about 20 times larger than the side reaction rate to byproduct 2-methoxy-1-propanol (K2) in the temperature range of 363–383 K. Such combination of micro-tubular circulating reactor with IL catalysts is believed to be a class of effective process intensification technique for highly efficient synthesis of 1-methoxy-2-propanol.

关 键 词：Ionic liquids Micro-tubular circulating reactor ALCOHOLYSIS Propylene oxide 1-Methoxy-2-propanol 

分 类 号：TQ223.123[化学工程—有机化工] TQ426