Ynthesis and Catalytic Performance of a Serious of Novel Perovskite-Type Catalysts

Ynthesis and Catalytic Performance of a Serious of Novel Perovskite-Type Catalysts
　　A series of perovskite-type composite oxides Ba-Zr-O,La-Ce-O, Sr-Ce-O, Mg-Ce-O,Ba-Ce-O,La-Zr-O,La-Co-O and Ba-Co-O have been prepared by improvement sol-gel method .and composite oxides Ba-Zr-O,Ba-Ce-O, La-Co-O were also prepared by Coprecipitation and Microemulsion method respevtively.and it was studied that the physical and chemical performance and catalytic performance.Then the catalyst BaZrO3 http://www.chinamagnets.biz/ which have higher catalytic activity rare earth magnets of methane combustion were substitude by La to study the effects of doping La on performance of methane catalytic combustion over BaZrO3 catalyst . The catalysts were characterized by XRD、 BET、 FT-IR、 H2-TPR、 TEM、 Electrical Conductivity、 TestMagnetism Test and tested methane combustion activity .The results showed that the single phase perovskite BaCeO3、 BaZrO3、 BaCoO2.70、 SrCeO3 and LaCoO3 were obtained for catalysts Ba-Ce-O、 Ba-Zr-O、 rare earth magnets Ba-Co-O、 Sr-Ce-O and La-Co-O system respectively after calcined at 1200℃ for 3 hours using improvement in sol-gel method.The BaZrO3 catalyst showed higher 更多还原