Platinum-based catalyst for efficiently and stably catalyzing dehydrogenation of liquid organic hydrogen carrier and preparation method of platinum-based catalyst

The invention discloses a Pt/GaMgAl2O4 catalyst for efficiently and stably catalyzing dehydrogenation of a liquid organic hydrogen carrier (LOHC) as well as a preparation method and application of the Pt/GaMgAl2O4 catalyst, and belongs to the technical field of dehydrogenation of liquid organic hydrogen carriers. At present, large-scale application of a hydrogen energy industry chain is limited by high storage and transportation difficulty, so that a new thought can be provided for solving the problem by providing the liquid organic hydrogen carrier. However, the dehydrogenation process of the liquid organic hydrogen carrier is relatively difficult, and has extremely high requirements on the activity and stability of the catalyst. The Pt/GaMgAl2O4 catalyst is prepared by adopting an equivalent-volume impregnation method, and the stability of the catalyst in the reaction process can be improved, so that the cost of the catalyst is reduced, and the dehydrogenation efficiency of a liquid organic hydrogen carrier