High-purity ammonium paratungstate’s thermal decomposition refers to the process to decompose APT by heating.
Thermal Decomposition of High-purity Ammonium Paratungstate
APT was heated to in the temperature range of 220-280°C to lose part of ammonia and crystal water and converted into ammonium metatungstate (AMT). After being heated to above 600°C, APT was found to decompose into WO3, which lose all ammonia and crystal water.
Thermal decomposition is a chemical decomposition caused by heat. The reaction is usually endothermic as heat is required to break chemical bonds in the compound undergoing decomposition. If decomposition is sufficiently exothermic, a positive feedback loop is created producing thermal runaway and possibly an explosion.
The thermal decomposition temperature, one of the important thermal properties of the polymer, refers to the temperature at which the macromolecule was heated to decompose. In other words, the thermal decomposition temperature is the temperature at which the polymer material begins to crosslink, degrade, and undergo other chemical changes. It is the highest temperature during the molding process of the polymer material.
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