从溶胶制备、凝胶干燥和粉末培烧三个方面综述了纳米a-Al2O3制备过程中团聚的机理和控制措施.表明制备溶胶时选用合适的pH值、加入高分子分散剂,溶胶干燥时采用低表面张力的有机溶剂,喷雾干燥、冷冻干燥,培烧时加入晶种有助于制备小粒径的a-Al2O3纳米材料.
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