反相微乳液和碳吸附耦合法制备Y_2O_3纳米粉体及表征

Preparation and Characterization of Nanometer-sized Y_2O_3 Particles by the Coupling Route of Reverse Micelles with Carbon Absorption

采用反相微乳液和碳吸附法制备了氧化钇纳米粉体,探讨了碳黑的加入量对粉体比表面积的影响,得到最佳的碳黑量。分别采用XRD、TEM、BET和TG分析了不同温度下煅烧所得粉体的物相、颗粒度、分散性和比表面积以及前驱体热分解特性。实验结果表明,700℃焙烧的粉体呈现良好的分散状态,比表面积为89.5m2.g-1,平均颗粒直径为10nm,随着烧结温度的升高,粉体的粒径逐渐增大。

Nano- sized Y203 powders were synthesized by a Reverse micelle and corbon adsorption method. The effect of the amount of added carbon on the nano - powder size was investigated. The optimum content of carbon was found. Then nano - sized Y2O3 powder was produced through calcining precursor at different temperatures. The calcined powder was measured by means of XRD,TEM and TG. The results show that nano- sized Y2O3 powder calcined at 700℃ has a high dispersion behavior and a surface area of 89.5m2/g. The average particle size is about 10nm. The particle size is enhanced gradually with the increasement of calcination temperature.