III International Conference

PP-III-33SYNTHESIS AND INVESTIGATION OF CARBON SUPPORTED ADSORPTIVECATALYSTS FOR PROCESSING OF TOXIC CHLORORGANIC COMPOUNDSGentsler A.G., Komova O.V., Netskina O.V., Tayban E.S., Graifer E.D., Simagina V.I.,Mukhin V.M. 1 , Zubova I.D. 1Boreskov Institute of Catalysis SB RAS, Novosibirsk, Russia1 FGUP «ENPO «Neorganika», Elektrostal, RussiaE-mail: gag@catalysis.nsk.suPolychlorinated aromatic compounds (PCAC) are very toxic substances. Processing andrecycling of these compounds are complicated not only by their thermal and chemicalstability, but also by formation of very hazardous pollutants - dioxines. The adsorptiontechnologies developed for waste treatment of the industry do not solve a problem of thefurther recycling highly toxic PCAC. To solving this problem the two step technology -adsorption of chlorocontaining pollutants on adsorptive catalysts from water andhydrogenolysis in multiphase system is proposed.In 80-s’ years of 20 century it has been established, that polychlorinated aromaticcompounds (PCAC) are very toxic substances. Processing and recycling of these compoundsare complicated not only by their thermal and chemical stability, but also by formation of veryhazardous pollutants - dioxines. The adsorption technologies developed for waste treatment ofthe industry do not solve a problem of the further recycling highly toxic PCAC. The analysisof various methods of processing PCAC has shown that the most perspective is the catalytichydrogenolysis process. The combination of adsorption step and catalytic hydrogenolysisallows to considerably simplify the scheme of processing PCAC, preventing dioxinesformation and increasing the durability of the equipment.The goal of the research work is synthesis of the active and stable adsorptive catalysts,capable to adsorb highly toxic polychlorinated aromatic compounds from objects of anenvironment for the further processing.During this research work the adsorption step of chlorobenzene (CB) from watersolutions was studied and it was shown, that the quantity of adsorbed CB and a kind ofadsorption isotherms are in a good accord with porous structure of carbon adsorbents. Themost effective CB adsorbents are microporous carbons with the high surface area MeKS,FAS, AG-2000. On the basis of the given carbons, palladium catalysts were synthesized andtheir activity in liquid-phase hydrodechlorination of CB by molecular hydrogen was studied.Conditions of the process were optimized. As a result of the investigation of the prepared530