Direct synthesis of hydrogen peroxide by heterogeneous catalysis, catalyst for this synthesis and method for the preparation of these catalyst.

摘要

Process for the direct synthesis of an aqueous solution of hydrogen peroxide from hydrogen and oxygen by heterogeneous catalysis in a three-phase system which comprises directly reacting hydrogen and oxygen in the gaseous state under a pressure higher than the atmospheric pressure at the surface of a solid heterogeneous catalyst suspended in the form of granules in a liquid aqueous phase, the catalyst consisting of a metal compound selected from palladium or a palladium assocation with at least one other noble metal impregnated on a support comprising at least one compound selected from sulfates or alkaline earth metal phosphates.