Redistribution of subfractional composition of resins after hydrothermal catalytic influences

Abstract

© SGEM2018. The resins extracted from heavy oil sample from Ashalcha oilfield (Tatarstan, Russia) and the products of Co-based catalytic and non-catalytic aquathermolysis are investigated. Saturates and four subfractions of resins (R1-R4) are extracted by liquid adsorption chromatography method with individual and solvents. Fractionation method leads to obtain more detail information about the structure of high molecular weight compounds due to subdividing large molecule and its aggregates into small ones. The extracted subfractions of resins are different in color (R1-yellow, R2-orange, R3, R4-dark brown). The molecular weight of fractions is increasing with extracting from R1 to R4. The pattern of adsorption chromatographic separation of resin components allows us to substantially supplement the results of IR spectral analysis. The content of saturate hydrocarbons increases after catalytic aquathermolysis. It is revealed that a component redistribution occurred between the subfractions of resins and resins content decreases (mostly R1 and R2 fractions) due to catalytic aquathermolysis processes.