ABSTRACT
Current technology for the manufacture of H2O2 involves the use of a complex anthraquinone solution which is first hydrogenated and then oxidized with air to produce H2O2 which is then extracted into an aqueous phase. Using and maintaining the anthraquinone solution adds substantial investment cost to the construction and operation of a manufacturing facility. The direct combination route to H2O2 involves the direct combination of H2 and O2 over a heterogeneous catalyst without using anthraquinone as the intermediate transfer phase. Although certain reactions are feasible the only products of these reactions are H2O2 and H2O. The reaction is carried out in a three phase system: liquid phase; solid phase; and gas phase. A novel fixed bed catalyst consisting of a 20/1 ratio of Pd/Pt deposited on a base metal screen by electroless deposition has been developed which is effective for combining H2 and O2 directly to H2O2.
