Used primarily as a catalyst in selective oxidation reactions, enabling efficient conversion of hydrocarbons into oxygenated products like aldehydes and ketones. Shows activity in environmental applications, such as the degradation of organic pollutants under mild conditions. Also investigated for use in chemical vapor deposition processes to produce tungsten-containing thin films for semiconductor and electronic device fabrication. Its mixed-valence nature contributes to redox activity, making it useful in certain electrochemical systems.