Dehydrogenation catalyst for preparing ketone through hydroxyl dehydrogenation and preparation method thereof

The invention provides a dehydrogenation catalyst for preparing aldehyde or ketone through hydroxyl dehydrogenation and a preparation method thereof. By introducing the Li aid, the acidity of the catalyst is reduced, and the generation of byproduct heavy oil is reduced. Li and a silicon source react to generate lithium silicate to fix Li, and condensed aluminum phosphate is added to fix lithium silicate, so that loss of lithium silicate is inhibited. The catalyst is subjected to water vapor hydrothermal treatment at different temperatures, so that the pore channels of the catalyst can be effectively expanded, the mass transfer effect in the reaction process is improved, and the catalyst can have better dehydrogenation activity at low temperature. The catalyst prepared by the method provided by the invention can reach high activity at a lower temperature, the alkaline auxiliary agent is added to inhibit the production of byproducts, and the curing agent is added to effectively immobilize the alkaline auxiliary