Ammonium metatungstate is widely and importantly used in petrochemical catalysts, and the following is a detailed summary of the application points:
Hydrodesulfurization Catalyst
Ammonium metatungstate is one of the main components of hydrodesulfurization catalyst. By introducing ammonium metatungstate, the active center of the catalyst can be optimized and its ability to remove impurities such as sulfur and nitrogen from fuel oil can be improved. This helps to produce more environmentally friendly and higher quality fuel oil products.
For example, in the hydrodesulfurization process, ammonium metatungstate combines with the catalyst carrier and active components to form a highly efficient catalyst system. This catalyst system enables efficient desulfurization at lower temperatures and pressures, improving reaction efficiency and product quality.
Hydrocracking Catalysts
Ammonium metatungstate also plays an important role in the hydrocracking reaction. It enhances the acidity and activity of the catalyst, promotes the cracking and conversion of hydrocarbon molecules, and improves the yield and quality of light oil products.
By adding ammonium metatungstate, the acidity and activity distribution of the catalyst can be adjusted, and the reaction conditions can be optimized to achieve higher conversion and selectivity.
Reforming Catalyst
Ammonium metatungstate is also often used as a catalyst component in reforming reactions. It can enhance the stability and activity of the catalyst, promote the conversion and cracking of aromatic hydrocarbons and other recombinant components, and improve the octane number and yield of reformed oil.
The addition of ammonium metatungstate can optimize the pore structure and surface properties of the catalyst, increase the number of active sites, and improve the catalytic efficiency and lifetime of the catalyst.
Catalyst carrier
In addition to being directly used as a catalyst component, ammonium metatungstate can also be used as a catalyst carrier. By combining ammonium metatungstate with alumina, silica and other carriers, petrochemical catalysts with excellent performance and stability can be prepared. Such catalyst carriers have high specific surface area and pore volume, which can provide more active sites, as well as good chemical and thermal stability.
Improvement of catalyst performance
The introduction of ammonium metatungstate can significantly improve the performance of petrochemical catalysts. By adjusting the amount of ammonium metatungstate added and the preparation process, the key performance indexes such as activity, selectivity and stability of the catalyst can be optimized. For example, in HDS catalysts, the addition amount of ammonium metatungstate is usually 1% to 5% of the total catalyst, which can significantly improve the desulfurization activity and stability of the catalyst.
In summary, ammonium metatungstate is widely and importantly used in petrochemical catalysts. It can not only be used as a catalyst component to improve the performance and stability of the catalyst, but also can be used as a catalyst carrier to provide excellent performance and stability. In the field of petrochemical industry, ammonium metatungstate will continue to play its important role in promoting the green and efficient development of petrochemical industry.
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