Characterization of acidic and basic components of residual petroleum stocks

Journal Article · Sun Jan 01 04:00:00 EST 1984 · Chem. Technol. Fuels Oils (Engl. Transl.); (United States)

OSTI ID:6720866

Varfolomeev, D F; Bakhtizina, R Z; Khairudinov, I R; Sokolova, V I

This article evaluates the contents of acidic and basic compounds segregated from residual petroleum stocks by using modified sorbents, and determines the principal types of compounds making up each of the segregated fractions. Five vacuum resids from different crudes were separated, and the fractions were analyzed by infrared spectroscopy and elemental analysis. A sample of 3 g of the resid, dissolved in cyclohexane, was introduced into a glass column with silica gel modified with 10% potassium hydroxide by weight. The column was then washed with hexane until the eluate was colorless. The product remaining after sorption of the acidic components was eluted with cyclohexane and fed to the next column with aluminium oxide modified with 50% pyrophosphoric acid to sorb the basic components. It is concluded that the components of the acidic fractions consist for the most part of compounds with a mobile hydrogen atom that is responsible for the acidic properties (carboxylic acids, phenols, imides, cyclic amides, etc.), and that the components of the basic fractions consist primarily of compounds with a center of basicity (benzologs of pyridine, amines, primary and secondary amides, etc.).

• Research Organization: Bashkir Sci.-Res. Inst. for Petroleum Processing
• OSTI ID: 6720866
• Journal Information: Chem. Technol. Fuels Oils (Engl. Transl.); (United States), Journal Name: Chem. Technol. Fuels Oils (Engl. Transl.); (United States) Vol. 19:6; ISSN CTFOA
• Country of Publication: United States
• Language: English

Related Subjects

02 PETROLEUM
023000* -- Petroleum-- Properties & Composition
ADSORBENTS
ALKALI METAL COMPOUNDS
ALKANES
ALUMINIUM COMPOUNDS
ALUMINIUM OXIDES
AMIDES
AMINES
AROMATICS
AZINES
CARBOXYLIC ACIDS
CHALCOGENIDES
CYCLOALKANES
CYCLOHEXANE
DISSOLUTION
ELEMENTS
ENERGY SOURCES
FOSSIL FUELS
FUELS
HETEROCYCLIC COMPOUNDS
HEXANE
HYDROCARBONS
HYDROGEN
HYDROGEN COMPOUNDS
HYDROXIDES
HYDROXY COMPOUNDS
IMIDES
INFRARED SPECTRA
INORGANIC ACIDS
NONMETALS
ORGANIC ACIDS
ORGANIC COMPOUNDS
ORGANIC NITROGEN COMPOUNDS
OXIDES
OXYGEN COMPOUNDS
PETROLEUM
PETROLEUM FRACTIONS
PETROLEUM RESIDUES
PHENOLS
PHOSPHORIC ACID
POTASSIUM COMPOUNDS
POTASSIUM HYDROXIDES
PYRIDINE
PYRIDINES
QUANTITY RATIO
SAMPLING
SILICA GEL
SPECTRA
STRUCTURAL CHEMICAL ANALYSIS