The development and commercialization of the new catalytic MEG process

Abstract

A new process for the production of mono-ethylene glycol (MEG; HOCH₂CH₂OH) was developed by Mitsubishi Chemical Corporation. While the MEG selectivity of conventional non-catalyzed process is around 89% under typical conditions, that of the new process exceeds 99%. The key of the high selectivity is the two-step synthesis via ethylene carbonate. The first step reaction is catalyzed by the catalyst and generates ethylene carbonate as an intermediate. This is followed by hydrolysis of ethylene carbonate in the second step. Several commercial plants of the new process have already been operated world-wide.