▎ 摘　　要

NOVELTY - Preparing palladium-gold-nickel-graphene catalyst used for dehydrogenating dodecahydroethylcarbazole, involves pre-processing carrier to using graphite oxide as carrier, putting the dried graphite oxide into ball mill tank containing n-hexane for ball milling to obtain graphite oxide powder, adding distilled water to the graphite oxide powder for ultrasonic dispersion to obtain a graphene oxide dispersion, adding nickel chloride to the obtained graphene oxide dispersion, where the added mass of nickel is 1-15% based on the mass of graphite oxide, stirring, and adding a certain amount of reducing agent to the obtained solution. USE - Method for preparing palladium-gold-nickel-graphene catalyst used for dehydrogenating dodecahydroethylcarbazole (claimed). ADVANTAGE - The method is simple, the conditions are mild, the operation is easy, and the suitable for large-scale production. The prepared catalyst has prevents the accumulation of precious metal palladium by introducing other metal, increase the dispersion of palladium, so as to improving the catalytic activity of the catalyst, greatly shortening the reaction time, and greatly improving the selectivity of ethylcarbazole. DETAILED DESCRIPTION - Preparing palladium-gold-nickel-graphene catalyst used for dehydrogenating dodecahydroethylcarbazole, involves pre-processing carrier to using graphite oxide as carrier, putting the dried graphite oxide into ball mill tank containing n-hexane for ball milling to obtain graphite oxide powder, adding distilled water to the graphite oxide powder for ultrasonic dispersion to obtain a graphene oxide dispersion, adding nickel chloride to the obtained graphene oxide dispersion, where the added mass of nickel is 1-15% based on the mass of graphite oxide, stirring, adding a certain amount of reducing agent to the obtained solution, stirring continuously to obtain first solution, filtering the obtained first solution, washing, adding chloroauric acid, adding mass of gold is 1-5% based on the mass of graphite oxide, stirring to obtain second solution, filtering the obtained second solution, washing, adding chloropalladic acid, adding mass of palladium is 1-5% based on the mass of graphite oxide, stirring to obtain third solution, washing the obtained third solution for three times until no chloride ion is detected, drying the resulting product in a blast drying oven for a period of time, and grinding to obtain palladium-gold-nickel-graphene catalyst.