摘要：以CeCl₃为铈源,Na₂CO₃为沉淀剂,采用沉淀法在不同反应温度下制备CeO₂前驱体,焙烧前驱体制备CeO₂粉体,研究前驱体反应温度对产物组成、结构、形貌及抛光性能的影响。结果表明,当反应温度低于或高于50℃时,前驱体分别以Ce₂(CO₃)₃·8H₂O或CeCO₃OH为主;反应温度对由2种前驱体制备的CeO₂粉体的抛光性能影响较大,当前驱体反应温度为4550℃时,制备的CeO₂粉体粒度均匀,抛光性能最优。

关键词：反应温度；前驱体；CeO₂粉体；抛光性能

Abstract: Taking CeCl₃ as the cerium source and sodium carbonate as the precipitant， CeO₂ precursors and CeO₂ powders were prepared by precipitation method at different reaction temperatures. The composition，structure， morphology and polishing property of the products were studied. The results indicate that when the reaction temperature of CeO₂precursors is below or above 50 ℃ ， the main composition of the precursors is Ce₂ (CO₃）₃·8H₂O or CeCO₃OH. The polishing property of CeO₂ powders produced by these two precursors is influenced by reaction temperatures. When the reaction temperature is between 45 and 50 ℃ ，CeO₂ powders have uniform size distribution and perfect polishing property. 

Keywords: reaction temperature； precursor； CeO₂ powder； polishing property