The optimal temperature range for the preparation of ammonium metatungstate by thermal decomposition method mainly depends on the specific process method and target product characteristics. The following is a summary of the optimal temperature for the preparation of ammonium metatungstate by thermal decomposition based on the information provided in the referenced articles:
Basic temperature range for the preparation of ammonium metatungstate by thermal decomposition method
The thermal decomposition method involves the pyrolysis of ammonium paratungstate by heating at temperatures between 200 and 400 °C. This range gives a basic temperature window.
Preparation of ammonium paratungstate by thermal decomposition method
The process method for the preparation of ammonium metatungstate from ammonium paratungstate by the thermal decomposition-additive method is described in detail in Reference Article 3, where it is mentioned that the temperature of thermal decomposition is controlled in the range of 280°C to 310°C. The temperature of the thermal decomposition is controlled in the range of 280°C to 310°C. This temperature range is more specific and is based on the particular process method and additives used.
Taking the above information into account, the optimal temperature range for the preparation of ammonium metatungstate by thermal decomposition can be summarized as 280°C to 310°C. This range is both within the basic temperature window and the result of optimization based on the specific process method and additive use. The actual optimum temperature may also need to be adjusted and optimized based on specific raw material quality, equipment conditions, production scale and other factors. Therefore, in actual production, it is recommended that testing and validation be conducted on a case-by-case basis to determine the optimal thermal decomposition temperature.
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