TECHNOLOGY FOCUS - INORGANIC CHEMISTRY - Preferred Components: The ceria (CeO2) in the composite oxide support is 3-20 wt.% based on the total weight of the composite oxide support. The oxide of metal is preferably alumina (A103). The composite oxide support has a specific surface area of 20-1500 m2/g. The CeO2 precursor includes cerium (III) nitrate hexahydrate, cerium tributyl acetate, cerium carbonate, cerium trichloride, cerium ammonium nitrate, ammonium sulfatocetate, cerium(IV) hydroxide, cerium (III) oxalate hydrate, cerium perchlorate, cerium sulfate. The alumina precursor includes aluminum nitrate hepta hydrate, aluminum trichloride, aluminum ammonium sulfate dodehydrate, aluminum isopropyl alkoxide, aluminum L-lactate, aluminum trinitrate hepta hydrate, aluminum hydroxide, aluminum ammonium disulfate, aluminum dimethyl aldehyde, aluminum chlorate hepta hydride, aluminum phenoxide, aluminum sulfate hydrate, aluminum tributyl, dialuminum tri-sec butoxide, or aluminum triethoxide. The zirconia precursor includes dinitrate zirconium oxide, zirconium tetrachloride, zirconium tetra-tert-butoxide, zirconium butoxide, zirconium hydroxy acetate, zirconium oxychloride, zirconium disulfate, or zirconium n-propoxide. The titania precursor is titanium nitrite, titanium oxysulfate, titanium propoxide, isopropyl orthotitanate, titanium tetraethoxide, tetra ethoxy titanate, titanium butoxide, titanium trichloride, or Titanium (IV) tert-butoxide. The weight ratio of CeO2 precursor, alcohol-based solvent, and acid in the first oxide precursor solution is 1:10:2-1:80:20. The weight ratio of metal oxide precursor, e.g. alumina, zirconia, and titania precursors; alcohol based solvent; and acid in the second oxide precursor solution is 1:10:2-1:80:20. The atomic ratio of cerium in ceria precursor to the metal components in the metal oxide precursor(s) is 1:4-1:40. Preferred Methods: The calcining of solution mixture in gel state is performed at 400-700degreesC. The mixing and heating of first oxide precursor solution and the second oxide precursor solution to form the solution mixture in the gel state, is performed at 100-200degreesC. The contacting is carried at 200-280degreesC.    TECHNOLOGY FOCUS - ORGANIC CHEMISTRY - Preferred Components: The alcohol-based solvent is 1-10C monohydric alcohol or 1-10C dihydric alcohol. EXAMPLE - Cerium nitrate hexahydrate (7.1 g) was dissolved in mixed solvent containing ethylene glycol (40.7 g) and citric acid (34.4 g) to produce first solution. Aluminum nitrate hepta hydrate (24.6g) was dissolved in mixed solvent containing ethylene glycol (162.8g) and citric acid (137.8 g) to produce another solution. The first and second solutions were stirred while heating to 100degreesC so that each solution became homogeneous. The two solutions were mixed together and stirred for 7 hours, while heating to 200degreesC until the solution mixture turned into gel. The gel formed was placed in an oven and was calcined in air at 500degreesC for 4 hours to obtain composite oxide support. The atomic ratio of cerium to aluminum in the composite oxide support was 2:8. Platinum ammonium nitrite (0.405 g) was dissolved in water (5 ml), and then the resulting solution was added dropwise to composite oxide support (10g). After the dropwise addition was completed, the composite oxide support with absorbed solution of platinum precursor was dried in oven at 110degreesC for 16 hours, and was calcined in air in an oven at 500degreesC for 4 hours to obtain supported catalyst.