The purity of ammonium metatungstate prepared by wet method is not necessarily higher than that of thermal decomposition method.
First of all, the purity mainly depends on the control conditions and raw material quality during the preparation process. In wet preparation, although ammonium metatungstate can be prepared by chemical reaction in solution and precise control, the purity and quality of the product may be affected by many factors, such as raw material purity, reaction conditions, operation process, etc. Therefore, even if wet preparation is adopted, if the raw material is impure or the operation is improper, the product purity may be low.
Secondly, the thermal decomposition method heats ammonium paratungstate to decompose it into ammonium metatungstate. This method has high requirements for temperature control, but if it is properly operated, it can prepare ammonium metatungstate products with stable quality and high purity. Therefore, when preparing ammonium metatungstate by thermal decomposition, if the decomposition conditions are well controlled, high-purity products can also be obtained.
Finally, whether it is wet preparation or thermal decomposition, it is necessary to select appropriate preparation methods and operating conditions according to specific needs and conditions. If you need to prepare high-purity ammonium metatungstate products, you need to select high-quality raw materials, accurately control the reaction conditions and operating process, and perform necessary product testing and quality control.
In summary, the purity of ammonium metatungstate prepared by the wet method is not necessarily higher than that by the thermal decomposition method. The purity of the product mainly depends on the control conditions and raw material quality during the preparation process. When choosing the preparation method and operating conditions, you need to weigh and choose according to specific needs and conditions.
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