A process for producing a catalytically active form of the body and a catalytically active shaped bodies

The invention relates to a method for preparing a catalytically active form of the body (1) comprising the steps: Providing a powder made from an alloy, wherein the alloy comprises a first and a second element different from the first element, which is selectively removable from the alloy by means of a liquid phase, Manufacture of the molded body (1) according to a predetermined geometry from the powder by means of an additive forming process and selectively removing at least a portion of the second element of the alloy with the liquid phase so that at least on one surface of the molded body (1) remains the first member and forms a porous structure.