▎ 摘　　要

NOVELTY - The preparation method of graphene-supported tin-tungsten bimetallic catalyst involves dispersing graphite oxide in water, ultrasonically stripping, then adding sodium tungstate dihydrate, tin salt and hydrochloric acid solution, then continuously carrying out ultrasonic dispersion for 1-8 hours, aging for 1-10 hours, carrying out hydrothermal reaction on the obtained mixed solution in a high-pressure reaction kettle lined with PTFE, cooling after the reaction is completed, performing vacuum filtration and separation, washing and vacuum-drying to obtain the product. USE - The method is useful for preparing graphene-supported tin-tungsten bimetallic catalyst, which is useful for preparing aldehyde or ketone (all claimed). ADVANTAGE - The method enables rapid preparation of graphene-supported tin-tungsten bimetallic catalyst with excellent cycle reproducibility, and high yield, conversion rate of more than 95% and selectivity of above 95%. DETAILED DESCRIPTION - The preparation method of graphene-supported tin-tungsten bimetallic catalyst involves dispersing graphite oxide in water, carrying out ultrasonic stripping for 1-8 hours, then adding sodium tungstate dihydrate, tin salt and hydrochloric acid solution, where the pH-value of mixed solution is 1-4, then continuously carrying out ultrasonic dispersion for 1-8 hours, aging for 1-10 hours, carrying out hydrothermal reaction on the obtained mixed solution in a high-pressure reaction kettle lined with PTFE, cooling after the reaction is completed, performing vacuum filtration and separation, washing and vacuum-drying to obtain the product. INDEPENDENT CLAIMS are included for the following: (1) the graphene-supported tin-tungsten bimetallic catalyst prepared by the above method; and (2) a method for preparing aldehyde or ketone, which involves using hydrogen peroxide as an oxidizing agent to carry out catalytic oxidation reaction of alcohol in an aqueous phase under the action of graphene-supported tin-tungsten bimetallic catalyst, and carrying out post-treatment after the reaction is completed to obtain the corresponding aldehyde or ketone.