Formation of Hydrocarbon Nanoscale Microemulsions Containing Group VI Metals and Catalytic Cracking of Final Systems

Abstract

Regularities of the catalytic cracking of petroleum fractions in the presence of metal sulfides formed in situ from microemulsion of the “oil fraction–aqueous solution of transition metal salt” type are studied. The conditions of formation of microemulsions containing particles of the dispersed phase with a size less than 140 nm are found. The main features of thermolysis of these systems are ascertained, and the phase composition of the resulting materials is identified. The intensification of catalytic cracking by molybdenum and tungsten sulfides at expense of internal hydrogen resources is studied. This effect makes itself evident as an increase in the feedstock conversion by 6.0–7.6%; the yield of gas and the gasoline fraction increases by 2.1–2.5 and 5.6–6.1%, respectively.