TECHNOLOGY FOCUS - INORGANIC CHEMISTRY - Preferred Components: The metal catalyst comprises 1-50 wt.%, preferably 5-10 wt.% of the structure. The support comprises 80-97 wt.% of the structure. The catalyst comprises at least one noble metal or transition metal, and the support comprises carbon, metal carbide, metal oxide or metal nitride. At least 90%, preferably 90-100% of the dispersed metal catalyst comprises dispersed metal clusters each having less than or equal to 10 atoms. The metal catalyst comprises platinum, the support comprises molybdenum carbide and the chemical detection comprises x-ray fluorescence. The metal catalyst clusters produce no diffraction and are detectable by scanning transmission electron microscopy high angle annular dark field mode, where the metal catalyst does not comprise metal nanoparticles which can be detected by transmission electron microscopy. The catalytic metal comprises at least one platinum group metal and/or at least one base metal. The compound which decomposes comprises urea. The metal precursor compound comprises a noble metal or transition metal organic compound. The catalyst support precursor compound comprises a compound that creates a thermally stable, high surface area ceramic support when thermally decomposed. The inert gas atmosphere comprises nitrogen, argon and/or helium. The catalytic metal precursor compound comprises a nitrate, amine, acetate, carbonyl or halogen complex containing at least one transition metal or platinum group metal atom. The compound that thermally decomposes to create a thermally stable high surface area ceramic comprises a transition metal nitrate, aluminum nitrate, a metal containing ammonia complex or halogen complex that contains metal atoms. The stable high surface area ceramic is an oxide, a carbide and/or a nitride. The catalytic metal complex comprises at least one of platinum, palladium, rhodium, iridium, ruthenium or osmium. The ceramic precursor compound comprises aluminum, silicon, titanium and/or magnesium. Preferred Process: In the process (P1): the step of heating is conducted at a temperature greater than a thermal decomposition temperature of urea; the step of combining comprises mixing the compounds; and the step of heating comprises heating the mixture or heating an aerosol of the mixture in a carrier gas stream. In the process (P2), the period of time is greater than 1 second and less than 30 minutes. The process (P2) comprises many catalytic metal precursor compounds in the physical mixture. In the process (P3), the period of time is greater than 0.01 second and less than 300 seconds. The process (P3) utilizes many catalytic metal precursor compounds in the physical mixture. EXAMPLE - No suitable example given.