Tungsten Hexachloride Applied for Preparing Tungsten Oxide Mesoporous Material

Tungsten hexachloride can be applied for preparing tungsten oxide mesoporous material. It has been reported that some researchers use tungsten hexachloride (WCl6) as the source of tungsten and long-chain organics as the template, after gelation in ethanol, the organic template is removed by calcination or solvent extraction agent to prepare tungsten oxide mesoporous material - a functional material with wide application in the fields of catalysis, electrochromism, electrode materials, energy storage and microwave materials.

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While it is difficult to obtain a tungsten oxide mesoporous material with better structure, as the tungsten oxide mesopores are very easy to collapse when calcined at high temperature. Also, it requires multiple extractions to remove the organic template and is difficult to remove. At the same time, tungsten oxide is difficult to fully crystallize. Therefore, some researchers use a hard template method, that is, using mesoporous silica as a template, so that tungsten oxide crystallizes in its mesopores at high temperature and HF is used to remove the template. Such a method removes the template under milder conditions and the template is completely removed.

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