Development of innovative automobile exhaust gas purifying catalyst by solvothermal reaction

采用溶剂热反应法制备了钙或锡掺杂的纳米CeO2，其热稳定性和储氧能力均优于CeO2合金。掺钙或掺锡的氧化钛纳米粒子与氧化铝、钯复合后，表现出了优良的汽车尾气净化催化性能，同时发现氧化锡具有与氧化铈类似的储氧能力，而溶剂热法制备的掺锶、掺钡二氧化锡纳米粒子的热稳定性和储氧能力均优于氧化铈-氧化锌合金。

Calcium or tin doped ceria-zirconia nanoparticles, which showed the thermal stability and oxygen storage capacity superior to ceria-zirconia alloy, were fabricated by solvothermal reaction. The composites of calcium or tin doped ceria-zirconia nanoparticles, gamma alumina and palladium showed the excellent performance as a automobile exhaust gas purifying catalyst.It was also found that tin oxide possesses the oxygen storage capacity like ceria, and that the strontium and barium doped tin oxide nanoparticles fabricated by solvothermal reaction showed the thermal stability and oxygen storage capacity superior to ceria-zirconia alloy.