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

Green Energy & Environment

卷:5

Zhang-Min Li¹  Yu-Mei Liu¹  Wen-Qiang Gong¹  Chao-Li Wang¹  Yan Zhou¹  Duan-Jian Tao² 

[1] College of Chemistry and Chemical Engineering, Jiangxi Normal University, Nanchang 330022, China;

[2] Corresponding author.;

关键词: Ionic liquids;    Micro-tubular circulating reactor;    Alcoholysis;    Propylene oxide;    1-Methoxy-2-propanol;   

DOI  :  

来源: DOAJ

【 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.

【 授权许可】

Unknown