Ammonium metatungstate is widely used in petrochemical catalysts, mainly in the following aspects:
Hydrogenation catalyst
Hydrogenation is an important step in oil processing, used to remove sulfur, nitrogen, oxygen and metal impurities in oil. Ammonium metatungstate can be used as an active component or additive of hydroprocessing catalyst to improve the hydrogenation activity and stability of the catalyst.
Hydrocracking catalyst
Hydrocracking is an important process for converting heavy petroleum fractions into light petroleum fractions (such as gasoline and diesel). Ammonium metatungstate can be used as a component of hydrocracking catalyst to improve the selectivity and activity of the catalyst.
Dehydrogenation catalyst
In petrochemicals, dehydrogenation reactions are used to produce important chemical raw materials such as olefins and aromatics. Ammonium metatungstate can be used as an active component of dehydrogenation catalysts to improve the conversion rate and selectivity of dehydrogenation reactions.
Alkylation catalyst
Alkylation is a process for reacting low-carbon hydrocarbons with aromatic hydrocarbons to produce high-octane gasoline components. Ammonium metatungstate can be used in the preparation of alkylation catalysts to improve the activity, stability and life of the catalyst.
Oxidation catalyst
Ammonium metatungstate can also be used as a component of oxidation catalysts, such as propylene oxidation to acrolein, isobutylene oxidation to methyl tert-butyl ether (MTBE) and other reactions. In these reactions, ammonium metatungstate can improve the oxidation activity and selectivity of the catalyst.
Photocatalyst
In recent years, ammonium metatungstate has also been studied in the field of photocatalysis. Photocatalysts can promote chemical reactions under light conditions and have the advantages of environmental protection and energy saving. Ammonium metatungstate photocatalysts can be used for reactions such as degradation of organic pollutants and photolysis of water to produce hydrogen.
In short, ammonium metatungstate is widely used in petrochemical catalysts. It not only improves the performance of catalysts as an active component or additive, but also improves the structure and performance of catalysts by participating in the preparation process of catalysts, providing strong support for the smooth progress of petrochemical production.
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