TECHNOLOGY FOCUS - INORGANIC CHEMISTRY - Preferred Components: The metal A is nickel or cobalt, and a upper-surface layer of a mixed oxide or mixing oxide, which is produced by high temperature oxidation with subsequent reduction, additionally contains at least a second component as metal B for component A. The metal B is preferably zircon, tantalum and chromium (more preferably aluminum). The intermetallic compounds, alloy or compounds from catalytically effective substance are oxidized at 600-1350degreesC with pure oxygen, air or mixtures with oxygen and are reduced at 400-1350degreesC with pure hydrogen or mixtures of hydrogen and inert gases like noble gases or nitrogen. The dispersion and/or the particle size of the catalytically effective substance or a preliminary stage are determined from by the choice of oxidation conditions. Preferred Process: The alloy or intermetallic compounds are oxidized at 600-1350degreesC. The oxidized component are reduced preferentially with hydrogen or 1-3C hydrocarbons from mixtures of hydrogen and/or hydrocarbons and/or inert gases such as noble gases or nitrogen at 400-1350degreesC. The alloy, the intermetallic compounds or compounds from high temperature-constant metal catalyst substrate are oxidized at 600-1350degreesC with pure oxygen, air or mixtures of oxygen and inert gases. The alloy or intermetallic compounds are oxidized at 600-1350degreesC (preferably 800-1100degreesC).Preferred Method: The produced metal catalyst substrate is transformed with usual carrier methods to a catalyst system. The metal catalyst substrate used for carrier methods such as impregnations, incipient wetness -methods, plasma procedure (chemical vapor deposition-methods), dipping process or dusting. EXAMPLE - Fibers of nickel alloy doped with 1% potassium and became (K)Ni3Al and heated for 6 hours at 1000degreesC in air. After cooling the material, high temperature-steady metal catalyst was used. The potassium influences of the surface acidity of the catalyst, was promoted. The alloying in the raw material and doping was also made in same process. Finally high temperature-constant metal catalyst substrate, potassium-promoted nickel on nickel-aluminum hydroxide was formed.