Boreskov Institute of Catalysis SB RAS, Novosibirsk, Russia

PRODUCTION OF ACTIVE ALUMINA – SELECTIVEHYDROGENATION CATALYST CARRIERReznichenko I.D., Tselyutina M.I., Posokhova O.M., Kiseleva T.P.JSC Angarsk Catalyst and Organic Synthesis Plant, 665830, Angarsk,Irkutsk region, Russia. E-mail: azkios@yukos.ruOP-1-13Analysis of the existing trends in new selective hydrogenation catalystdevelopments shows that the progressing performance level of industrial catalysts isbased on optimization of structural, textural (specific surface area and porousstructure) and acid properties of a carrier.The aim of this work was to study the influence of the method of active aluminamodification, used as a selective hydrogenation catalyst carrier, on its physical andchemical properties. It was revealed that introduction of the structure-formingadditives at the stage of carrier preparation allows carrier pore structure to beintentionally adjusted thereby changing its physical and chemical characteristics.Properties of the industrial carrier samples obtained using structure-forming additivesare given in the following table vs. typical carrier produced by double-flowprecipitation (А-64).Table - Physical and chemical properties of industrial carriersProperty А-64 Sample 1 Sample 2 Sample 3Specific surface area, S sp.BET , m 2 /g 270 246 200 146Crush strength, kg/mm 1.0 2.0 2.3 2.5Bulk weight, kg/dm 3 0.62 0.73 0.74 0.75Pore radius distribution, pore share intotal pore volume, %:- less than 18 Å- 18-60 Å- 60-100 Å- more than 100 Å4342042It can be seen from the table that carrier modification with a structure-formingadditive leads to changed porous structure parameters and notably increased carrierstrength factor. Modified alumina carriers were used to produce industrial catalystbatches for selective hydrogenation of butane-butadiene cut from acetylenes andinert gases from oxygen and hydrogen impurities.35532102886418014537