The phase transition temperature of ammonium metatungstate is not a simple fixed value as it depends on a variety of factors such as heating rate, atmosphere, purity of the sample, and so on.
Interval of decomposition temperature
The decomposition temperature of ammonium metatungstate is roughly in the range of 200°C to 600°C. The decomposition temperature of ammonium metatungstate is in the range of 200°C to 600°C. Within this temperature range, ammonium metatungstate undergoes different phase changes and decomposition processes.
Specific processes of phase transformation and decomposition
At heat treatment temperatures of 200-300°C, ammonium metatungstate removes all the water of crystallization and most of the ammonium ions.
At a temperature of 300-350°C, ammonium metatungstate undergoes a phase transition to produce stabilized tungsten oxide.
When the heat treatment temperature rises to 500-550°C, there is still a small amount of ammonium root and binding water that has not decomposed.
When the heat treatment temperature is above 600°C, ammonium metatungstate completely decomposes into tungsten trioxide (WO3).
Specific phase transition temperature points
The specific phase transition temperature point may vary due to differences in experimental conditions and material purity. However, based on the above information, we can assume that the main phase transformation and decomposition process of ammonium metatungstate occurs in the temperature interval from 200°C to 600°C.
Precautions
When determining the phase transition temperature of ammonium metatungstate, high purity samples should be used and the experiments should be conducted under constant heating rate and atmosphere conditions to ensure the accuracy and reliability of the experimental results.
The phase transition temperature of ammonium metatungstate is not a fixed value, but a temperature interval in the range of 200°C to 600°C. The phase transition temperature of ammonium metatungstate is not a fixed value, but a temperature interval in the range of 200°C to 600°C. Within this temperature interval, ammonium metatungstate undergoes different phase transformation and decomposition processes. Therefore, in specific experiments and applications, the phase transition temperature of ammonium metatungstate should be determined according to actual needs and environmental conditions.
More details of ammonium metatungstate product, please visit website: http://ammonium-metatungstate.com/
Please contact CHINATUNGSTEN for inquiry and order of ammonium metatungstate:
Email: sales@chinatungsten.com
Tel.: 86 592 5129595
