Theoretically, many of the carriers found at present can be used as the carriers of tungstophosphoric acid, but most of them use oxidants as the carriers of oxidants or are easy to decompose when alkali is azeotropic. At present, SiO₂, HZSM-5 molecular sieve, Y-type molecular sieve, HP, HMS molecular sieve, worm like molecular sieve, activated carbon, silica gel and so on are the main carriers of phosphotungstic acid catalyst.

Sodium hydroxide decomposition is the main process for tungsten mineral raw materials. In the alkaline system, phosphorus, arsenic, silicon, molybdenum, tin and other elements contained in the mineral are leached to varying degrees and become the main impurities in the crude sodium tungstate solution. Some scholars have found that when sodium hydroxide decomposes tungsten ore, the calcium content of raw materials is beneficial to inhibit the leaching of impurities such as phosphorus, arsenic and silicon, and the leaching rate of these impurities decreases with the increase of calcium content.

Cadmium tungstate (CdWO₄, CWO) single crystal is a scintillation crystal material with excellent comprehensive properties, which can be widely used in nuclear medicine imaging, safety inspection, industrial CT, oil logging, high energy physics and other technical fields, especially in medical X-CT, container inspection system. Up to now, it has been reported that the single crystal of cadmium tungstate has been grown by Czochralski method at home and abroad. It is very difficult to grow high-quality large-scale cadmium tungstate single crystals. The main problem is that the optical transmittance of the grown single crystals is not uniform at the beginning and the end, the repeatability of the single crystals grown in different batches is poor, and there are many crystal defects such as cracking, inclusions, color centers, etc. 

Halotungstate is a kind of tungstate which is mainly composed of oxyhalide, it is a new type of visible light response photocatalyst.