TECHNOLOGY FOCUS - INORGANIC CHEMISTRY - Preferred Catalyst: The inorganic oxide is supported on the carrier to provide a supported inorganic oxide, the supported inorganic oxide is surface-treated by the strong acid ion to provide a surface-treated inorganic oxide, and the platinum-group metal is disposed on a surface of the surface-treated inorganic oxide. The reforming catalyst further comprises zirconium oxide. The reforming catalyst comprises (wt.%): platinum-group metal (0.1-5), inorganic oxide (4-30), element derived from strong acid ion (1-6), zirconium oxide (2-15), and the carrier (balance). The reforming catalyst comprises (wt.%): cerium oxide (2-15) and praseodymium oxide (2-15). The cerium oxide and praseodymium oxide are included in a weight ratio of 1:1 to 6:1. Preferred Method: In the method, the preparation of the first catalyst precursor further includes mixing a zirconium oxide precursor with the inorganic oxide precursor and carrier. The firing is performed at 650-800 degrees C for 1-2 hours. Preferred Components: The carrier is selected from aluminum oxide, and/or titanium oxide. The platinum-group metal is selected from platinum (Pt), palladium (Pd), ruthenium (Ru) and/or rhodium (Rh). The strong acid ion is selected from sulfuric acid ions and/or phosphoric acid ions. The strong acid solution comprises at least one of the strong acid ion. EXAMPLE - Cerium nitrate (Ce(NO3)3.6H2O) (20.81 g) was added to water (20 ml) to prepare a solution. Aluminum oxide pellets (31.75 g) were added to the solution so that the solution could be absorbed in the aluminum oxide pellets. The aluminum oxide pellets were calcined at 500 degrees C for 1 hour at a speed of 10 degrees C/minutes, to form cerium oxide/aluminum oxide (CeO2/Al2O3) (40 g). In the CeO2/Al2O3, CeO2 was included in an amount of 20.62 wt.%, and Al2O3 was included in an amount of 79.38 wt.%. Sulfuric acid (0.626 g) was added to water (10 ml). Water was further added to the solution to a total volume of 15 ml while agitating, to preparing a thin sulfuric acid solution. CeO2/Al2O3 (15 g) was added to the thin sulfuric acid solution to surface treat the CeO2/Al2O3 with sulfuric acid ions for 30 minutes. The CeO2/Al2O3 treated with sulfuric acid ions was calcined at 650 degrees C for 1 hour, to form sulfated cerium oxide/aluminum oxide (CeO2/SO4/Al2O3) (15 g). The CeO2/SO4/Al2O3 and chloroplatinic acid hexahydrate (H2PtCl6.6H2O) (1.23 g) were added to water (3 ml). The resulting product was dried in air for 30 minutes and then heat-treated at 200 degrees C for 1 hour at a speed of 10 degrees C/minutes, to form platinum (Pt)/CeO2/SO4/Al2O3 (15.46 g). The prepared Pt/CeO2/SO4/Al2O3 was fired at 650 degrees C for 1 hours. Pt was included in an amount of 3 wt.%, CeO2 was included in an amount of 20 wt.%, and Al2O3 was included in an amount of 77 wt.%.