The researchers proposed a method for preparing high purity tungsten hexachloride, which requires the following steps: raw material pretreatment, tungsten hexachloride preparation, tungsten hexachloride refining, condensation reception and tail gas treatment.

Ammonium metatungstate (AMT) is an important tungsten-containing compound that can be used as a catalyst in petroleum cracking, organic synthesis, and nitrification reactions. Nowadays, with the rapid development of petroleum refining and petrochemical industries, AMT is more and more popular. Therefore, how to obtain AMT with advantages of low impurity content, stable quality, good solubility, high WO3 content and low cost has become the priority of the current task.

What is tungsten hexachloride? Tungsten hexachloride is the chemical compound of tungsten and chlorine with the formula of WCl6. It shows dark blue or blue violet appearance, and exists as a volatile fine powder under standard conditions.

Ammonium metatungstate catalyst is a new type of catalyst with the characteristics of strong activity, high selectivity, long service life, good water solubility, uniform distribution of active components on the carrier, and large specific surface area. Therefore, it has attracted much attention form many researchers, and its applications are expanding.