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Tungsten trioxide nanopowder applying for ceramic microsphere may be obtained by calcining pyrochlore-type tungsten trioxide (WO3?0.5H2O) with high purity. It is worth to note that the WO3?0.5H2O may be a feasible direction for further development of tungsten smelting. Therefore, it is necessary to pay attention to the preparation method of WO3?0.5H2O. Under hydrothermal conditions, ultrafine pyrochlore-type tungsten trioxide powders may be prepared directly from sodium tungstate solution using pure tungsten trioxide (WO3) as an additive. The results showed that the…

Tungsten trioxide nanopowder has unique structural characteristics and thus may be applied to prepare nano-ceramic color master. The following mainly introduces the pyrochlore-type tungsten trioxide (WO3?0.5H2O), which can be used to prepare tungsten trioxide by calcing. Due to its unique structural characteristics, the pyrochlore-type tungsten trioxide has a wide range of applications in the field of laminated composites and sensing devices. At present, there is still not comprehensive research on WO3?0.5H2O. And it is still unable to be mass-produced. Therefore,…

There are many uses for tungsten trioxide nanopowder, one of which is applied as a raw material for preparing nano-ceramic dispersion solution, so that the dispersion solution can quickly wet the surface of solid particles, and can also increase the energy barrier between solid particles to a high enough level. Tungsten trioxide, as a surfactant, plays an important role in improving the performance of ceramic products and reducing manufacturing costs of ceramic. Pyrochlore-type Tungsten Trioxide The pyrochlore-type tungsten oxide film…

Tungsten trioxide nanopowder is a type of near-infrared shielding material, which may be used to prepare thermal insulation films, such as thermal insulation building films and thermal insulation car films. Such tungsten trioxide (WO3) powder also has a catalytic effect. Isomerization of N-alkanes on Pt/WO3-SO4/ZrO2 The isomerization reaction of n-alkanes on Pt/WO3-SO4/ZrO2 was studied to find that the activity of WO3 to n-hexane isomerization was ten times that of metal catalysts. The activity of the catalysts for the isomerization of…

Tungsten trioxide nanopowder may be applied for producing heat insulating window glass. And there are many methods for preparing nano grain size tungsten trioxide. The following describes a preparation method of tungsten trioxide nanosheet. Preparation of Tungsten Trioxide Nanosheet A novel intercalation compound was synthesized in a nonpolar heptane medium using H2W2O7 and n-octylamine as material, and a dingal material was finally obtained after removing the organic amine and calcining. The material exhibits extremely high sensitivity to alcohol. In addition,…

Tungsten trioxide nanopowder may shield the near-infrared and ultraviolet (UV) rays, and thus can be used for preparing window heat insulation film. In hot summer, if the window is coated with the heat insulation film using WO3 as material, it will be cooler in your home or office. Certainly, tungsten trioxide also has good catalytic performance, and therefore has a very broad application prospect in the field of catalysis. With the further development of material science, other properties of tungsten…

Tungsten trioxide nanopowder applying for heat insulation masterbatch not only has good ding of shielding ultraviolet (UV) rays and near-infrared rays, but also has good catalytic ding. And there is no doubt that the heat insulation material using WO3 as material will have a wide application in the field of heat insulation. Application of Tungsten Trioxide in Field of Catalysis There are a lot of tungsten-based catalysts including tungsten, tungsten compounds, tungsten sulfides, and heteropolytungstic acids. They all have good…

Tungsten trioxide powder for thermal insulation master batch may be prepared by hydrothermal method using Na2SO4 as an additive. And the obtained tungsten trioxide was analyzed to know its photocatalytic performance. The sample was a hexagonal phase tungsten trioxide nanowire obtained using 0.125M Na2SO4 as an additive. The sample was used to direct photodegrade rhodamine B solution under irradiation in sunlight. The experimental results were shown in the following picture. In the picture, “a” was the UV-visible absorption curve, “b”…

Nano tungsten trioxide has good absorption properties of ultraviolet light and near-infrared light and therefore can be applied for the preparation of thermal insulation dispersion. The photocatalytic activity of tungsten trioxide also reflects its light absorption properties. Therefore, it is conducive to understand the properties of tungsten trioxide by analyzing the characteristics of tungsten trioxide as a photocatalyst. When tungsten trioxide is used as a photocatalyst, the grain size of the photocatalyst is an important factor affecting the photocatalytic activity…

Nano tungsten trioxide for thermal insulation dispersion liquid may be synthesized using Na2SO4 as an additive, by hydrothermal method. And then, analyzing the Raman spectrum of WO3 to reveal whether the product contains crystal water or not. Raman spectra analysis of WO3 prepared using different concentrations of Na2SO4 additive was done, and the results were shown in the picture below. The concentration of Na2SO4 in “a” was 0.5M, the concentration of Na2SO4 in “b” was 0.25M, and the concentration of…