Process for the preparation of alkylene glycols

A process for the preparation of an alkylene glycol, said process comprising continuously passing an alkylene oxide, carbon dioxide and water over a catalytic composition comprising an active anion, selected from the group consisting of metalates, carbonate, bicarbonate and hydroxide, immobilized on a first solid support having one or more electropositive sites and a halide immobilized on the first or a second solid support having one or more electropositive sites, wherein the carbon dioxide is added in an amount of at least 0.5 mol/mol alkylene oxide.