Preparation of the BaTiO3–SiO2 hybrid particles for the catalyst of methane steam reforming process

BaTiO3 nano-coated SiO2 (BaTiO3–SiO2) hybrid particles were prepared by liquid phase deposition and sol–gel process. The obtained BaTiO3–SiO2 hybrid particles have relatively high surface area (20 m2 g−1) at 600 °C annealing temperature. Ni component was impregnated to the obtained BaTiO3–SiO2 hybrid particles, and the obtained catalyst was used for the methane steam reforming process to consider the effect of the surface area on the catalytic activity. The catalytic activity of the Ni/BaTiO3–SiO2 catalyst was approximately three times as large as that of the reported Ni/BaTiO3 catalyst, even in the lower process temperature. However, the limitation temperature for methane steam reforming process of this hybrid material was 600 °C, because of the diffusion of the Ba component.

► The nano-coating of the “composite oxide” on the nano-particles was successfully attained by two-steps chemical solution deposition. ► The obtained perovskite composite oxide has relatively high surface area compared with that of the reported value. ► The catalytic activity of the Ni/BaTiO3–SiO2 catalyst was approximately three times as large as that of the reported Ni/BaTiO3 catalyst, even in the lower process temperature.