Method of producing a catalyst

A process of producing hydrogen peroxide according to the anthraquinone process involving alternate oxidation and hydrogenation of anthraquinones or derivatives thereof in working solution of organic solvents in the presence of a catalyst, wherein the catalyst comprises a porous support and at least one catalytically active metal deposited thereon by electroless deposition, the electroless deposition including the steps of activating the porous support to absorb a catalyst for electroless deposition, and then treating the porous support with a solution of a salt of the at least one catalytically active metal and a reducing agent to achieve electroless deposition of the catalytically active metal on the support, wherein the activation comprises the steps of first treating the porous support with a solution of a sensitizer capable of acting as a reductant and then with a solution of a salt of the catalyst for electroless deposition to achieve formation of a thin layer of said catalyst on the support.