Chlorine production from hydrogen chloride, e.g. by-product from phosgenation, vinyl chloride or polycarbonate production or recycling PVC, uses ionic liquid as catalyst and solvent in oxidation with molecular oxygen

摘要

Production of chlorine by oxidation of hydrogen chloride with a gas stream containing molecular oxygen is carried out in the presence of ionic liquid (I). An independent claim is also included for use of (I) as solvent and/or catalyst for the production of chlorine from hydrogen chloride by oxidation.