Isolation and study of polycyclic naphthenes from high-boiling petroleum fractions

Journal Article · Tue Jan 01 00:00:00 EST 1980 · Pet. Chem. USSR (Engl. Transl.); (United States)

DOI:https://doi.org/10.1016/0031-6458(80)90072-6· OSTI ID:5467531

Sergiyenko, S R; Polyakova, A A; Aidogdyev, A A; Talalaev, E I; Niyazov, B G; Kogan, L O

The efficiency was shown of obtaining isoparaffin and naphthene hydrocarbon concentrates from high-boiling (>400/sup 0/) petroleum fractions by complex-formation with thiourea from homogeneous phase. Polycyclic naphthene hydrocarbons may be separated by complex formation with thiourea, followed by adsorption chromatography on alumina. Using a complex system of separation, mass-, chromato-mass-spectrometry and capillary GLC it was shown that polycyclic naphthene hydrocarbons of Koturdepe petroleum (400 to 500/sup 0/ fraction) among those forming a complex with thiourea are mainly represented by 5-..cap alpha..-cholestane and 5-..cap alpha..-ergostane, while hydrocarbons from those which do not form a corresponding complex are pentacyclic hydrocarbons of hopane and morethane series. Distribution of polycyclic naphthene hydrocarbons in fractions obtained by adsorption chromatography on Al/sub 2/O/sub 3/ indicates that they may be further separated according to molecular weight and chemical structure. 2 figures, 3 tables.

• Research Organization: Inst. of Chemistry, Ashkhabad, USSR
• OSTI ID: 5467531
• Journal Information: Pet. Chem. USSR (Engl. Transl.); (United States), Vol. 20:3; Other Information: Translated from Neftekhimiya; 20: No.5, 643-648(1980)
• Country of Publication: United States
• Language: English

Related Subjects

02 PETROLEUM
37 INORGANIC
ORGANIC
PHYSICAL AND ANALYTICAL CHEMISTRY
CYCLOALKANES
REMOVAL
PARAFFIN
PETROLEUM FRACTIONS
SEPARATION PROCESSES
ADSORPTION
ALUMINIUM OXIDES
COMPLEXES
EFFICIENCY
LIQUID COLUMN CHROMATOGRAPHY
MASS SPECTROSCOPY
THIOUREAS
ALKANES
ALUMINIUM COMPOUNDS
CARBONIC ACID DERIVATIVES
CHALCOGENIDES
CHROMATOGRAPHY
ENERGY SOURCES
FOSSIL FUELS
FUELS
HYDROCARBONS
ORGANIC COMPOUNDS
ORGANIC SULFUR COMPOUNDS
OTHER ORGANIC COMPOUNDS
OXIDES
OXYGEN COMPOUNDS
PETROLEUM
SORPTION
SPECTROSCOPY
WAXES
020500* - Petroleum- Products & By-Products
400102 - Chemical & Spectral Procedures