Pt-W catalyst taking defect-state titanium dioxide as carrier and preparation method of Pt-W catalyst

The invention belongs to the technical field of low-carbon alcohol selective hydrogenolysis catalysts, and particularly relates to a Pt-W catalyst with defect-state titanium dioxide BTNSs as a carrier and a preparation method of the Pt-W catalyst. The preparation method comprises the following steps: dropwise adding a titanium source into H2O under mild stirring in an ice-water bath, and sequentially adding urea and DL-sodium lactate; stirring the mixture, pouring the mixture into a high-pressure sterilizer with a Teflon lining, and carrying out hydrothermal treatment, purification and drying to obtain a defect-state titanium dioxide BTNSs carrier coordinated with unsaturated Ti < 3 + > ions; and loading by using a tungsten-containing precursor solution and a platinum-containing precursor solution in sequence by taking the Pt-W catalyst as a carrier, dipping, drying and calcining to obtain the Pt-W catalyst. The prepared catalyst is stable in performance and can be applied to selective hydrogenolysis reaction