Carboxylic acids from West Siberian crudes

Journal Article · Wed Sep 01 04:00:00 EDT 1982 · Chem. Technol. Fuels Oils (Engl. Transl.); (United States)

DOI:https://doi.org/10.1007/BF00727487· OSTI ID:6020006

Zhil'tsov, N I; Ershov, V A; Zakharova, T F

The concentrates of acidic compounds were recovered from the raw crudes by extraction with a 2% solution of potassium hydroxide in 50% ethanol; the concentrates were then treated to remove neutral substances present as impurities and were separated into phenols and carboxylic acids by means of silica gel modified with caustic. The methyl and trimethylsilyl (TMS) esters of the carboxylic acids were analyzed by chromatography/mass spectrometry. It is assumed that in the West Siberian fields, along with catagenic processes, microbiological degradation processes are taking place. After a sample of Fedorovsk crude had been exposed to the bacterial action (60 days at 32/sup 0/C) of an accumulated culture of sulfate-reducing bacteria, followed by dehydration of the sample, the relative content of straight-chain fatty acids with an even number of carbon atoms had increased. There was a sharp increase in the contents of palmitic, palmitoleic, and oleic acids, which are characteristic products of the metabolism of microorganisms.

• OSTI ID: 6020006
• Journal Information: Chem. Technol. Fuels Oils (Engl. Transl.); (United States), Journal Name: Chem. Technol. Fuels Oils (Engl. Transl.); (United States) Vol. 18:1-2; ISSN CTFOA
• Country of Publication: United States
• Language: English

Related Subjects

02 PETROLEUM
020500* -- Petroleum-- Products & By-Products
37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
400301 -- Organic Chemistry-- Chemical & Physicochemical Properties-- (-1987)
ADSORBENTS
ALCOHOLS
ALKALI METAL COMPOUNDS
AROMATICS
ASIA
BY-PRODUCTS
CARBOXYLIC ACIDS
CHEMICAL REACTIONS
DECOMPOSITION
EASTERN EUROPE
ENERGY SOURCES
ESTERS
ETHANOL
EUROPE
EXTRACTION
FOSSIL FUELS
FUELS
HYDROGEN COMPOUNDS
HYDROXIDES
HYDROXY COMPOUNDS
IMPURITIES
MONOCARBOXYLIC ACIDS
OLEIC ACID
ORGANIC ACIDS
ORGANIC COMPOUNDS
OXYGEN COMPOUNDS
PETROLEUM
PHENOLS
POTASSIUM COMPOUNDS
POTASSIUM HYDROXIDES
PURIFICATION
SEPARATION PROCESSES
SIBERIA
SILICA GEL
USSR