Abstract
The article describes the study of the regularities of oxidative cracking of vacuum gas oils of Atyrau and Zhetybay oil on composite catalysts based on natural zeolite Taizhuzgen and Narynkol clay.During oxidative cracking on synthesized zeolite-containing catalysts, an increase in gas and coke formation is observed in comparison with cracking in an inert atmosphere.These data indicate a magnification in the catalytic destruction of high molecular weight hydrocarbons in the presence of traces of air.The influence of the fractional composition of the processed feedstock on the laws of the catalytic process was determined; the dependence of the composition and yield of cracking products on the ratio of components in the catalyst was established.When varying the concentration of air in the reaction mixture, a maximum concentration of the kerosene-gas oil fraction in the cracked products is observed, corresponding to the air supply at a speed of 0.15 h -1 .The influence of air on the course of the cracking reaction and the relationship between the parameters of oxidative-catalytic cracking were determined.The oxidative cracking of high molecular weight hydrocarbons on composites of natural zeolite and clay proceeds by a radical mechanism.The data confirm that the process of oxidative cracking in the gas phase is an environmentally safe and effective way to obtain cracking products of heavy raw materials.