The invention discloses a preparation method of a
copper cerium catalyst with high dispersion of active species. The preparation method of the
copper cerium catalyst with high dispersion of the activespecies comprises the steps that S1,
metal copper salt or
cerium salt is dispersed in water, further a dispersed organic ligand is added, and the mixture is stirred uniformly; and the mixed solutionis placed in an oven for
crystallization,
hydrothermal synthesis is carried out to obtain a
copper metal organic framework compound or a cerium
metal organic framework compound or a copper cerium bimetallic organic framework compound; S2, when the synthesis product is a
copper metal organic framework compound, the
copper metal organic framework compound is loaded with cerium ions by an equal volume impregnation method; when the synthesis product is the cerium
metal organic framework compound, the cerium
metal organic framework compound is loaded with copper ions by an impregnation method to obtain a catalyst precursor; S3, and the obtained catalyst precursor is dried and placed in a
muffle furnace for
calcination to obtain the copper cerium catalyst. The synthesized copper cerium catalysthas the following advantages that (1) a large specific surface area is achieved, so that efficient conversion of CO is facilitated; (2) orderly pores are achieved, and gas
mass transfer during the reaction is accelerated; and (3) better CO-
PROX effect is achieved, complete conversion of CO can be achieved at 100 DEG C with good selectivity.