A mixed oxide supported ultra-low ruthenium-based catalyst, its preparation method and application

Abstract

This invention belongs to the field of aromatic ring hydrogenation catalyst technology, and relates to a mixed oxide supported ultra-low ruthenium-based catalyst, its preparation method, and its application. This invention improves the acidic sites at the catalyst surface by controlling the proportion of the metal oxide support. Simultaneously, it utilizes the mesoporous structure and high specific surface area of ​​the support, and leverages the ruthenium catalytic active sites at the hydroxyl coordination sites on the support surface to effectively avoid the problem of catalytic metal aggregation and deactivation. This enhances the stability of the active metal in the catalytic material, inhibits its aggregation during the reaction, and thus significantly reduces the ruthenium loading of the catalyst. Ultimately, it obtains a catalytic system with high conversion, high selectivity, high TON value, and high TOF value, meeting the atom economy and environmental friendliness requirements of industrial production.

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