An Overview of Mono-Ethylene Glycol Synthesis via CO Coupling Reaction
Mono-ethylene glycol (MEG) is an important industrial chemical, primarily used as a precursor for polyester fibers, antifreeze, and as a component in other chemical applications. Given its wide usage, the efficient and environmentally friendly production of MEG is a topic of significant interest. Among the various methods for MEG production, the synthesis from syngas (a mixture of carbon monoxide and hydrogen) via CO coupling reactions has garnered attention for its potential to provide a green and efficient route. The Syngas Route to MEG Production The synthesis of mono-ethylene glycol via syngas proceeds in two key steps. These include: 1. Carbonylation of Alkyl Nitrile – This is a self-closing, green step where alkyl nitriles undergo carbonylation to produce dialkyl oxalate. 2. Hydrogenation of Dialkyl Oxalate – In this step, the dialkyl oxalate is hydrogenated to produce mono-ethylene glycol. This method stands out for its environmental friend...