Catalyst for preparing 1,4-butanediol and preparation method

The invention discloses a catalyst for preparing 1,4-butanediol and a preparation method. The catalyst adopts zinc oxide as a carrier, adopts copper and nickel as active components, adopts M as an auxiliary agent, is a Cu-Ni-Zn-M-O catalyst, wherein M is manganese or magnesium. The catalyst comprises the following metal elements by weight: 30 wt%-60 wt% of copper elements, 2 wt%-10 wt% of nickel elements, 20 wt%-40 wt% of zinc elements, 2 wt%-10 wt% of M elements. The preparation method comprises the following steps: preparing a mixed solution of soluble salts of Cu, Ni, Zn, and M, stirring and mixing with a precipitating agent solution at 50-70 DEG C, controlling the pH value of 7-9, stirring for 1-3 hours, heating to 80-90 DEG C, aging for 2-10 hours, filtering to obtain a precipitate, and performing drying, roasting and molding to obtain the product. The catalyst of the invention has the advantages of high conversion rate, good product selectivity, long service life, low cost, and the like, and the preparation method is simple and easy to operate.