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该研究以氯氧化锆和氨水为原料,直接沉淀法制备纳米氧化锆的实验条件,并对产品进行了XRD、TEM表征.用正交设计系统考察氯氧化锆的浓度、乙醇含量、反应物摩尔比以及反应温度对氧化锆粒径和产率的影响.优化出直接沉淀法制备纳米氧化锆较好的条件是:氯氧化锆浓度0.75mol/L,乙醇含量80%,氨水与氯氧化锆摩尔比4:1,反应温度25℃.在此条件下获得平均粒径为20nm,产率为94.2%的纳米氧化锆粉体.
In this study, zirconium oxychloride and ammonia as raw materials, the direct precipitation method for the preparation of nano-zirconia experimental conditions, and the product was characterized by XRD, TEM orthogonal design system investigated zirconium oxychloride concentration, ethanol content, molar reactants Ratio and the reaction temperature on the particle size and the yield of zirconia.The optimum conditions for the preparation of nanometer zirconia by direct precipitation are as follows: the concentration of zirconium oxychloride is 0.75mol / L, the content of ethanol is 80%, the molar ratio of ammonia to zirconium oxychloride Than 4: 1, the reaction temperature is 25 ° C. Under this condition, a nano-zirconia powder with an average particle diameter of 20 nm and a yield of 94.2% is obtained.