Catalyst for producing 1.4-butynediol and preparation method of catalyst

The invention discloses a catalyst for producing 1.4-butynediol and a preparation method of the catalyst, belonging to the technical field of load type catalysts for a slurry reactor. The catalyst for producing 1.4-butynediol is characterized in that nanosilicon dioxide is used as a carrier, the nanosilicon dioxide has larger external specific surface area, copper and bismuth are absorbed on the carrier by adopting an impregnation and deposition-precipitation method, so that the catalyst contains 35-65 percent of copper oxide, and then a defined amount of silica sol is added, and through a specific forming method, the granularity of the catalyst is between 1micrometer and 50 micrometers. The prepared catalyst has the characteristics of good activity, high selectivity, high strength, easiness in separation, high particle uniformity, and difficulty in pulverization in a use process; and the preparation method of the catalyst is simple and easy to operate and good in repeatability.