POLYCYCLOALCANE HYDROCARBONS IN TARIBANI OIL
Journal Title: World Science - Year 2018, Vol 1, Issue 9
Abstract
For the purpose of extraction and identification of cyclic alkane hydrocarbons in oil from the Taribani field, Georgia, concentrates isolated from 200-350ºC fractions have been studied. The concentrate preparation included the following steps: (a) distillation of a crude oil, (b) dearomatization of distillates by silica gel, (c) three-stage thermal diffusion separation of isoalkanes and cycloalkanes, and (d) thiourea adduction. Ten thermal diffusion fractions were obtained. A mixture of the IX and X fractions and separately the VIII fraction were studied. The extracts from these fractions with thiourea were studied as well. Composition of concentrates has been determined by the gas chromatography – mass spectrometry (GC-MS) method. The main components of the VIII thermodiffusion fraction were C11-C22 isoprenoid alkanes. Among them the predominant were pristane C19 and the phytane C20, the well-known biomarkers of oil. In the VIII thermodiffusion faction including dimethyl-, trimethyl-, tetramethyl-, ethyl-, methyl-ethyl-, diethyl-, propyl, methyl-propyl adamantanes, were identified.
Authors and Affiliations
Natela Khetsuriani, Elza Topuria, Madlena Chkhaidze, Vladimer Tsitsishvili
Keywords
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- EP ID EP547095
- DOI 10.31435/rsglobal_ws/30092018/6132
- Views 114
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