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本文对近年来应用反向胶团或w/o微乳液制备纳米级超细颗粒的研究进展作了评述,包括反胶团内的沉淀、胶体催化剂、半导体、磁性及陶瓷材料的制备等.针对不同的制备目标,选择恰当的表面活性剂与助表面活性剂以及胶团组成,得到具有良好微观结构的反胶团或微乳液是该方法的应用基础.从工程角度看,解决反胶团极性水核内的金后离子容量问题是该方法获得突破性进展的关键.文中提出了应用在反胶团内沉淀的方法合成纳米级氧化物陶瓷粉的可行性,并始出结合溶剂萃取过程中的反胶团现象,直接制备所需要的氧化物陶瓷粒体是获得工业应用的捷径.
In this paper, the recent progress in the application of reverse micelles or w / o microemulsions to the preparation of nano-sized ultrafine particles was reviewed, including the precipitation of anti-micelles, colloidal catalysts, semiconductors, magnetic and ceramic materials. According to different preparation targets, choosing appropriate surfactants and cosurfactants and micelles to obtain the reverse micelles or microemulsions with good microstructure is the basis of this method. From an engineering point of view, solving the problem of posterior gold ion content in reverse micellar polar water nuclei is the key to this method’s breakthrough. In this paper, the feasibility of synthesizing nanoscale oxide ceramic powders by the method of precipitation in reverse micelles is proposed and the combination of the reverse micelle phenomenon in the solvent extraction process is introduced. The direct preparation of the required oxide ceramic granules is obtained by the industrial Shortcuts to application.