The results show that it needs high aging temperature and enough aging time for the colloidal precipitate of cerium carbonate to get the relatively small primary particle size of CeO_2 with good dispersion, otherwise large aggregate will form. 研究表明形成的碳酸铈胶状沉淀物需要在高温下陈化足够长的时间才能制备出一次粒径小,分散性好的CeO2产品,否则将形成大的团聚体。
From the principle of colloidal chemistry, the influence of neutral pH value on precipitate volume is analyzed. 文中还根据胶体化学原理,分析了中和pH值对沉淀产物沉降体积的影响。