Abstract
The aim of the work was to study the process of hydrodearomatization and alkylation of gasoline fractions under increased hydrogen pressure. It has been used Rh-Pt (9:1)/Al2 O3 catalyst in the work. It has been studied the hydrogenation of three gasoline fractions of «Atyrau Oil Refinery» LLP and Pavlodar Petrochemical Plant LLP. 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 %. Catalytic systems based on zeolites ZSM5 and Y modified with Mg, La, and Ce were tested during the alkylation of 2 gasoline fractions of Atyrau Oil Refinery LLP. It was established that benzene fractions was removed by 30–37% from gasoline and the content of aromatic hydrocarbons, toluene and cumene decreased by 6–10%.The catalysts were studied by BET, porometry and EM methods, which established a uniform formation of nanoscale particles on the catalyst surface.