Tungsten hexafluoride is a colorless gas at room temperature and its density is the largest among known gases. WF6 has a relative molecular mass of 297.84, and its molecule has a symmetrical regular octahedral structure at room temperature and is diamagnetic. At present, the industry mainly adopts a method in which metal tungsten is directly reacted with fluorine gas or NF₃ to prepare WF₆, and the reaction is usually carried out at a temperature higher than 350 °C.

Graphene has special structure and excellent performance. Using graphene as catalyst support can reduce the recombination of photogenerated electron-hole pairs in titanium oxide and improve the photocatalytic performance of titanium oxide effectively. However, due to the forbidden bandwidth of titanium oxide, only the ultraviolet part of sunlight can be utilized.

Phosphotungstic acid is an important catalyst in the petrochemical industry. Its traditional synthesis method is ether acid extraction. This traditional method uses a low boiling organic compound, diethyl ether, as a complex extractant. The boiling point of ether is 34.5 °C, which is extremely volatile. Therefore, there are defects in safety and environmental pollution in the process of conventional synthesis of phosphotungstic acid.

Coarse-grained tungsten carbide is widely used in mining tools, stamping dies, oil drilling and production, hard surface materials and other fields because of its advantages of less structural defects, high microhardness and small micro-stress. At present, the main method of producing coarse-grained tungsten carbide is to obtain coarse-grained tungsten powder first, and then to obtain coarse-grained tungsten carbide powder by further high-temperature carbonization.