摘要：在PEG+正相醇/正庚烷/水溶液(NaAlO2)体系w/o型微乳液中通入CO2，焙烧后制备出了纯度大于99.9%、粒度小于80nm的Al（OH）3与Al2O3纳米粉体。实验结果表明,乳化温度、表面活性剂与助表面活性剂之比及水相的浓度是决定粉体粒度的主要影响因素。
关键词： 微乳液;氧化铝;超细粉体
Abstract：T he CO2 are insufflated into PEG ＋ n － butano／n －heptane／water solution （NaAlO2） w／o microemulsion system and the nanometer Al（OH）3 and Al2O3 powders are obtained after rosted and the purity is higher than99．9％the average diameter is less than80nm．T he experimental results indicate that the emulsification temperature the ratio of surfactant and cosurfactant and the concentration of aqueous phase are the main factors that affect the size of powders．
Keywords：microemulsion；aluminum；ultrafine powders
