TECHNOLOGY FOCUS - CHEMICAL ENGINEERING - Preferred catalyst : The amount of the element of the platinum group carried on the inorganic oxide is 0.4 - 40 wt%. The mean particle diameter of (a) is 0.5 - 20 mum. In the catalyst, 35 - 400 g of the catalyst component which contains 1 - 30 g of the heat-resistant inorganic oxide is carried on 1 liter of the monolith support. The amount of the element of the platinum group carried on one liter of the monolith support is 0.1 - 5 g. The element of the platinum group is at least one element selected from Pt, Rh and Ir, and is preferably Pt-Rh mixture. The element of the platinum group contained in the catalyst comprises 50 wt% or more of Pt. (a) is at least one compound selected from activated alumna, Ce-oxide and Zr-oxide. In the preferred catalyst, (a) contains an activated alumna and (b) comprises at least two oxides selected from Ce-oxide, Zr-oxide, Ce-Zr composite oxide. In the catalyst, the wt ratio of the activated alumna to Ce-oxide is 100 : 15 - 100 : 60, and the wt ratio of Ce-xode to Zr oxide is 100 : 2 - 100 : 60. Preferred Process : A process for producing the catalyst for partial oxidation of hydrocarbons comprises bringing a monolith support into contact with a catalyst component slurry and then baking it. Another process comprises bringing a monolith support into contact with a catalyst component slurry containing a powder in which the element of the Pt group is fixed in the activated alumna and a powder in which at least one part of Ce-oxide and/or Zr-oxide is present as a composite oxide, and then baking it. Preferred Application : A H2-containing gas is produced by bringing a mixture of a hydrocarbon-containing gas and O2 or O2-containing gas into contact with the partial oxidation catalyst so as to partially oxidize the hydrocarbon. The mixture of a hydrocarbon-containing gas and O2 or O2-containing gas contains water vapor. WIDER DISCLOSURE - A gas containing H2 is produced in the presence of the invented catalyst.    EXAMPLE - A cozelite honey-comb support was soaked in a slurry prepared by wet-mixing activated alumna carrying Pt (111.3 g), Ce-oxide/Zr oxide composite (36.0 g), pure water and CH3COOH. The honey-comb was dried at 150 degreesC, and then baked at 500 degreesC in air for 1 hour. This process was repeated, and the catalyst comprising the honeycomb containing 252 g of catalyst component per 1 liter of support, was obtained. City gas containing 87.3 % of methane and 5 ppm of S, and air, in which the ratio of O/C was 0.54, were brought into contact with the catalyst filled in a reactor at 350 degreesC for 2 hours so as to obtain a H2-containing gas with a conversion rate of 79 %.