HYDROGENATION OF AROMATIC HYDROCARBONS IN GASOLINE FRACTIONS OVER SUPPORTED CATALYSTS UNDER PRESSURE

The aim of the work was to study the process of hydrodearomatization of gasoline fractions under increased hydrogen pressure. It has been used Rh-Pt (9:1)/Al2O3 catalyst in the work. It has been studied the hydrogenation of two gasoline fractions of "Atyrau Oil Refinery" LLP (Hydrogenizate KU GBD and Stable Catalysate LG). Technological parameters of the process of hydrodearomatization for the production of environmentally friendly fuels, containing no benzene and low in aromatic hydrocarbons have been worked out (pressure, temperature). Data on group composition of organic substances in gasolines demonstrate that after catalytic hydrogenation benzene in final samples of two fractions is absent. For hydrogenizate, the aromatic content decreased from 11.12 weight % to 2.20 weight %. For stable catalysate, the amount of aromatics decreased from 51.5 weight % to 10.96 weight %. The catalyst was studied by BET, porometry and EM methods, which established a uniform formation of nanoscale particles on the catalyst surface.