▎ 摘　　要

NOVELTY - Method for preparing palladium-silver-boron/amine-reduced graphene oxide-titanium dioxide catalyst, involves (i) dispersing graphene oxide in deionized water to prepare graphene oxide suspension, adding titanium dioxide powder, ultrasonically treating, placing graphene oxide-titanium dioxide suspension in hydrothermal kettle and maintaining at 140-180 degrees C for 3-5 hours, (ii) adding 3-aminopropyltriethoxysilane to reduced graphene oxide-titanium dioxide composite carrier suspension, ultrasonically treating and stirring, (iii) adding sodium tetrachloropalladate and silver nitrate to deionized water to prepare a mixed solution, adding to amine-reduced graphene oxide-titanium dioxide catalyst composite carrier suspension, and ultrasonically treating for 40-60 minutes, and (iv) continuously dripping 0.5-1 mol/l aqueous solution of boron-containing reducing agent into above suspension, stirring under ice bath for 1-4 hours, washing and centrifuging. USE - The method is useful for preparing palladium-silver-boron/amine-reduced graphene oxide-titanium dioxide catalyst used in the dehydrogenation of formic acid (all claimed). ADVANTAGE - The catalyst does not require any stabilizer which reduces the cost of catalyst, adjusts the electronic structure and properties of the active center and improves the activity of the catalyst. DETAILED DESCRIPTION - Method for preparing palladium-silver-boron/amine-reduced graphene oxide-titanium dioxide catalyst, involves (i) dispersing graphene oxide in deionized water to prepare graphene oxide suspension, adding titanium dioxide powder, ultrasonically treating to obtain graphene oxide-titanium dioxide suspension, placing the graphene oxide-titanium dioxide suspension in a hydrothermal kettle and maintaining at 140-180 degrees C for 3-5 hours to obtain reduced graphene oxide-titanium dioxide composite carrier suspension, (ii) adding 3-aminopropyltriethoxysilane to the reduced graphene oxide-titanium dioxide composite carrier suspension, ultrasonically treating and stirring to obtain a amine-reduced graphene oxide-titanium dioxide catalyst composite carrier suspension, (iii) adding sodium tetrachloropalladate and silver nitrate to deionized water to prepare a mixed solution, adding to the amine-reduced graphene oxide-titanium dioxide catalyst composite carrier suspension, and ultrasonically treating for 40-60 minutes, and (iv) continuously dripping 0.5-1 mol/l aqueous solution of boron-containing reducing agent into the above suspension, stirring under ice bath for 1-4 hours, washing and centrifuging. INDEPENDENT CLAIMS are included for the following: (1) a palladium-silver-boron/amine-reduced graphene oxide-titanium dioxide catalyst prepared by the above method, where the particle size of the palladium-silver-boron alloy used in the catalyst is 1.5-3 nm; and (2) a use of the catalyst in the dehydrogenation of formic acid at 290-300 K, where the conversion frequency is 950-980 hour-1.