▎ 摘　　要

NOVELTY - A catalyst comprises 2-30 wt.% ruthenium nanoparticles active component, and cucurbituril and reductive graphene oxide as total carrier. USE - Catalyst used for preparing aromatic sulfonamide compound (claimed). ADVANTAGE - The method is simple and easy to operate, effectively prevents the agglomeration of reductive graphene oxide due to electrostatic effect and volume effect of cucurbituril, uniformly disperses ruthenium nanoparticles, and has mild reaction condition, relatively low cost, and no special equipment required. The catalyst can be used repeatedly without reducing catalytic activity, and has excellent catalytic activity and stability in catalyzing sulfonamide and aromatic alcohol to prepare aromatic sulfonamide compound. DETAILED DESCRIPTION - A catalyst comprises 2-30 wt.% ruthenium nanoparticles active component, and cucurbituril and reductive graphene oxide as total carrier. The catalyst is of formula Ru/CB/rGO. An INDEPENDENT CLAIM is included for preparation of catalyst comprising: (A) synthesizing cucurbituril and graphene oxide; (B) adjusting pH of ruthenium precursor salt solution using sodium hydroxide solution; (C) adding cucurbituril and graphene oxide, and stirring for 4 hours to obtain mixture; (D) dissolving 5 times sodium borohydride in ethanol to obtain reducing agent, rapidly injecting into obtained mixture, magnetically stirring for 3 hours, centrifuging, washing twice with water and once with ethanol, and oven-drying to obtain nano-catalytic material; and (E) adding steps B and C product, adding different proportions of cucurbituril, graphene oxide and metal precursor to obtain series of different active component content of nano-catalyst, adjusting pH with different acids.