An emerging application for the WGS reaction is on-board purification and production of H₂ for fuel cell powdered vehicles. To develop a high performance WGS catalyst, we have studied WGS reaction over 1%Pt/CeO₂, 40%Ni/CeO₂ and the transition metal carbides catalysts. The performance of the prepared catalysts were compared with these of a commecial LTS catalyst. The results demonstrate that transition metal carbides are attractive candidates for development an alternate LTS catalyst for automotive applications. It was found that 1%Pt/CeO₂ catalyst was more active than the LTS catalyst at a high temperature more than 250 ℃. The development of these materials could lead to substantial reductions in the size, weight and cost of WGS reactors.