The production process of Ammonium Metatungstate does not necessarily require the use of catalysts.
The production process of ammonium metatungstate may include several steps, such as tungsten ore extraction, tungsten nitrate precipitation and ammonia addition. These steps, while they may involve chemical reactions, do not necessarily require the use of a catalyst to facilitate the reactions.
In the preparation of ammonium metatungstate by thermal decomposition, although the use of a citric acid catalyst is mentioned, it is not necessary. The thermal decomposition method mainly realizes the conversion of ammonium paratungstate to ammonium metatungstate by controlling the conditions such as the temperature and time of thermal decomposition without additional addition of catalyst. However, catalysts may be used under certain specific process conditions or to optimize production efficiency. However, based on the current information, it is not possible to determine whether catalyst is necessarily required in the production of ammonium metatungstate.
In summary, whether catalysts are required in the production of ammonium metatungstate depends on specific process conditions and needs. In most cases, no additional catalyst is needed, but it may be used in special cases.
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