Preparation method of carbon dioxide hydrogenation catalyst and application thereof

Abstract

The application discloses a preparation method of a carbon dioxide hydrogenation catalyst and application thereof, and belongs to the hydrogenation catalysis field. The vanadium slag is used as a raw material, and a leaching solution containing silicon, chromium and vanadium is obtained through sodium calcination. An aluminum source is added to remove the silicon element, and an ordered mesoporous carbon material is added to convert the elemental silicon and aluminum into an ordered mesoporous composite oxide, which is used as a hydrogenation catalyst carrier. Indium salt, cerium salt and nickel salt are dissolved in ethanol, mixed with the carrier and subjected to equal-volume impregnation to obtain the hydrogenation catalyst. The leaching solution from which the silicon is removed is subjected to chromium and vanadium separation to obtain chromium sesquioxide and a full-vanadium flow battery electrolyte. The catalyst has a regular pore structure, the ordered mesopore provides a confinement effect, helps dispersion and anchoring of active components and significantly improves the catalyst activity.

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