
Monoclinic ammonium paratungstate with different particle size can be obtained by different heating stages. The changes of particle size and surface area at each stage in rapid thermal decomposition of monoclinic APT can be concluded by differential thermal analyzer (DTA) and laser particle size analyzer, which can guide the preparation of tungsten oxide with desired particle size. Rapid Thermal Decomposition of Monoclinic Ammonium Paratungstate 1. Monoclinic APT was heated to 600°C at a rate of 9°C/min in argon (Ar) for…