【摘要】 以仲钨酸铵(APT)为原料,通过正交设计和单水平实验,采用水热法处理制备了WO3粉体。通过激光粒度仪、比表面分析测试仪、TEM、XRD等测试技术对WO3进行表征,研究了制备过程对WO3粒度大小、晶粒形貌、晶型等的影响。结果表明,最佳实验条件是APT于180℃晶化8h,45℃真空干燥后500℃煅烧2h,得到的样品粒度较小,比表面较大。水热晶化处理的空白对比实验表明,水热晶化处理有利于介稳态六方WO3的形成,晶粒发育更完整,结晶程度更高。更多还原

【Abstract】 Tungsten trioxide powder has been prepared from ammonium paratungstate via hydrothermal method using orthogonal and mono-level design of experiments. The effect of the preparation process on particle size, specific surface area, crystal form and crystalline morphology of the tungsten trioxide was investigated by TEM and XRD etc. It was found that the optimum conditions of the preparation are hydrothermal crystallization for (8 h) at 180 , followed by vacuum drying at 45 and calcination at 500 for 2 h. The blank reference (experiment) shows that hydrothermal crystallization treatment favors the formation of hexagonal tungsten (trioxide), and the tungsten trioxide powder sample prepared by this method has a high degree of crystallinity.更多还原