Nano grain size cesium tungstate may be applied for producing transparent thermal insulation material. With the promotion of the thermal insulation material, the preparation of cesium tungstate has been paid more and more attention. In this regard, the expert proposes the following preparation method of nano cesium tungstate powder. And the nanometer cesium tungstate prepared by the method has the characteristics of high purity, light agglomeration, high production efficiency and low cost.
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A method for preparing a cesium tungstate nano powder comprises the following steps:
1.0 The reaction amount of the tungsten raw material and the cesium raw material are dissolved in a solvent, and the solution is dried to obtain a powder, and the obtained powder is further pulverized to obtain a mixed powder of tungsten and cesium;
2.0 The tungsten and cesium mixed powder is placed in a closed reaction vessel with stirring, a reaction solvent is added thereto, and the reaction is stirred at 180-350°C for 2-8 hours. The mass of the reaction solvent is 1-3 times the mass of the mixed powder of tungsten and cesium;
3.0 The reaction product in step 2.0 is separated and washed with deionized water or ethanol, dried, and pulverized by a jet mill to obtain nano cesium tungstate.
