Abstract: In order to prepare hydrophobic catalyst which can withstand higher temperature and can be used for catalisis of reaction between hydrogen and oxygen and used for decontamination of tritium-containing gases. The ceramic hydrophobic catalyst carrier was prepared by processing porous hydrophobic zeolite with strong acid. Then the ceramic hydrophobic carrier was cavered with platinum by chemical deposition of Pt from a H₂PtCl₆ solution in acetone. Its catalytic-oxidation activation in lower hydrogen atmosphere and its isotopic exchanging activation in lower HTO solution were studied. The results show that the catalyst can withstand temperature up to 800℃. When the catalyst is used at room temperature a conversion efficiency of 95% for catalyzing the oxidation of hydrogen, and a conversion efficiency of 81.7% for catalizing the T-H isotopic exchange between HTO-H₂ are observed.