Abstract: This study is aimed at improving the quality of motor fuels, in particular, reducing the total sulfur content by developing alternative methods – the process of oxidative desulfurization with hydrogen peroxide without the use of hydrogenation processes. The process of oxidative desulfurization with hydrogen peroxide of wide and narrow fractions of GCC and GC: b.s.-120 °C and 120 °C-b.e. gasoline of catalytic cracking and b.s.-85 °C and 85 °C-b.e. gasoline of coking on a heterogeneous Mo-containing catalyst was studied. The total sulfur content in the fractions b.s.-120 °C and 120 °C-b.e. GCC was 283 and 636 ppm, respectively, and in the fractions b.s.-85 °C and 85 °C-b.e. GC – 1451 and 1894 ppm, respectively. In the course of the work performed, the optimal conditions for carrying out the process in a flow mode were identified: T = 100 °C and V = 2 h-1. Subsequently, the obtained fractions were subjected to extraction with ionic liquids (IL) to isolate sulfur-containing compounds. In this case, the degree of desulfurization of the GCC fractions was 73.7%, and that of the GC fractions was 83.6%, with virtually no change in the octane number (ON) of gasoline.
In the course of the studies on the process of oxidative desulfurization of CCG and CG gasolines, followed by extraction with ionic liquids, the total sulfur content does not exceed 55-60 ppm in the composition of commercial gasoline.