Oil Resins and Asphaltenes of Different Chemical Nature
T. V. CHESHKOVA, E. YU. KOVALENKO, V. P. SERGUN, N. N. GERASIMOVA, T. A. SAGACHENKO, and R. S. MIN
Institute of Petroleum Chemistry, Siberian Branch, Russian Academy of Sciences, Tomsk, Russia
E-mail: cheshkova@ipc.tsc.ru
Keywords: asphaltenes, resins, structural moieties, nitrogenous bases, structural-group and individual compositio
Pages: 78-85
Abstract
The paper substantiates the research results on the composition and structure of resinous-asphaltenic materials of low resin and heavy highly resinous oils by a set of physicochemical research methods (extraction, liquid adsorption chromatography, elemental analysis, cryoscopy in benzene, IR and 1H NMR spectroscopy, structural group analysis, the selective chemical breakdown of sulphide, ether, and ester bonds, and also by gas chromatography-mass spectrometry). Similarities and differences of the structural-group composition of resins and resin nitrogenous bases were detected. Compositions of moieties bound via ether/ester and sulphide bridges in resin and asphaltene molecules, and also those of compounds adsorbed by occluded asphaltenic species were investigated. As determined, composition and structure peculiarities of resin and asphaltenic molecules were dependent on the chemical nature of the initial oil species.
DOI: 10.15372/CSD20190113
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