Catalytic cracking of vegetable oils and vacuum gas oil

[Display omitted] ► Co-conversion of vegetable oil and VGO allows to increase the gasoline yield by 10%. ► High gasoline yield explained by facilitating of hydrogen transfer reactions. ► Maximum promoting effect is provided by the addition of 5–10wt.% vegetable oil. ► To provide a maximum effect, high unsaturated vegetable oil should be added. The effect of vegetable oil unsaturation on the distribution and composition of the products of oil conversion over an equilibrium cracking catalyst was studied. Co-conversion of vacuum gas oil and vegetable oils under catalytic cracking conditions make it possible to increase the yield of gasoline fraction by 10wt.%. A maximum promoting effect is attained by the addition of 5–10wt.% vegetable oil. Investigation of joint transformations of n-undecane, tetralin and sunflower oil upon cracking revealed that an increase in the yield of gasoline fraction can be related to the occurrence of hydrogen transfer reactions and manifestation of the competitive sorption effect.