TECHNOLOGY FOCUS - INORGANIC CHEMISTRY - Preferred Processes: Heat treatment is performed on synthesized alloy catalyst. A support for the catalyst is placed in the reactor before supplying the vaporized catalyst precursors to the reactor. Upon supplying the vaporized catalyst precursors to the reactor, transfer lines for transferring the vaporized catalyst precursors are maintained in a vaporization temperature range of each of the catalyst precursors, and the reactor is preheated to a predetermined temperature for reacting the vaporized catalyst precursors. Preferred Components: Catalyst precursors are platinum (Pt) catalyst precursor and greater than or equal to 1 co-catalyst precursor. Pt catalyst precursor is trimethyl(methylcyclopentadienyl) platinum(IV), platinum(II) acetylacetonate, tetrakis(trifluorophosphine) platinum(0), tetrakis(triphenylphosphine) platinum(0), platinum(II) hexafluoroacetylacetonate, and/or (1,5-cyclooctadien)dimethyl platinum(II). Co-catalyst precursor contains Groups 4A, 5A, and/or 8B elements. Co-catalyst precursor contains cobalt (Co) precursor e.g. cobalt(II) acetylacetonate, dicarbonyl cyclopentadienyl cobalt, cobalt carbonyl, and/or cyclopentadienyl dicarbonyl cobalt(I). Co-catalyst precursor contains ruthenium (Ru) precursor e.g. ruthenium acetylacetonate, bis(ethylcyclopentadienyl) ruthenium(II), bis(cyclopentadienyl) ruthenium(II), and/or tris(2,2,6,6-tetramethyl-3,5-heptanedionato) ruthenium(III). Catalyst precursors contain non-Pt catalyst precursors consisting of palladium (Pd) precursor, and the other non-Pt catalyst precursor consisting of iridium (Ir), cobalt (Co), nickel (Ni), vanadium (V), chromium (Cr), zinc (Zn), manganese (Mn), copper (Cu), iron (Fe), indium (In), tin (Sn), selenium (Se), cerium (Ce), and/or Ru. Pd precursor is palladium(II) acetate, hexafluoroacetylacetonate palladium(II), and/or palladium(II) acetylacetonate. Ni precursor is nickel(II) acetylacetonate, bis-cyclopentadienyl nickel, and/or tetrakis trifluorophosphine nickel. Co precursor is cobalt(II) acetylacetonate, dicarbonylcyclopentadienyl cobalt, cobalt carbonyl, and/or cyclopentadienyl dicarbonyl cobalt(I). Ru precursor is ruthenium acetylacetonate, bis(ethylcyclopentadienyl) ruthenium(II), bis(cyclopentadienyl) ruthenium(II), and/or tris(2,2,6,6-tetramethyl-3,5-heptadionato) ruthenium(III).