采用熔盐法制备了氧化铈纳米粉体,探讨了改变铈与熔融盐之间的比例和烧结温度对粉体粒度的影响,确定了可控粉体的最佳实验条件.通过TG-DTA、XRD、TEM、BET等测试方法对其物相、颗粒度、分散性、颗粒形貌和比表面积等性能进行了表征.结果表明,烧结温度为400℃、熔融盐与铈比为3∶1时,制备出分散性好、呈良好的结晶状态的类球状纳米晶粒,比表面积为84.9 m2·g-1,平均粒径为10.7nm;随着烧结温度的升高,粉体的粒径逐渐增大,当烧结温度为600℃时,粒径为26nm.
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