Comparative evaluation of some methods of investigations of the composition of hydroxyethylated alkylphenols
Hydroxyethylated alkylphenols (HEAP/sub n/), which are nonionogenic surfactants, are used in the petroleum industry for increasing the extraction of oil. An attempt was made in this study to use methods of column fractionation, turbidimetric titration (TT), and gel permeation chromatography (GPC) for determining the molecular inhomogeneity of HEAP/sub n/ (n = 10) characterized by the molecular-weight distribution (MWD). The study of the MWD of HEAP by different methods showed that as a function of the problems actually posed, all of the methods can be used for this purpose. For operational control of the molecular and structural inhomogeneities in the preparation of HEAP, it is desirable to use such methods as GPC and TT. The preference which should be given to GPC due to its rapidity and the volume of the information obtained is neutralized by the difficulty in procuring the instruments. For this reason, the availability and simplicity of the apparatus used is a favorable circumstance for the use of TT.
- OSTI ID:
- 5174171
- Journal Information:
- J. Appl. Chem. USSR (Engl. Transl.); (United States), Journal Name: J. Appl. Chem. USSR (Engl. Transl.); (United States) Vol. 60:5; ISSN JAPUA
- Country of Publication:
- United States
- Language:
- English
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020300* -- Petroleum-- Drilling & Production
37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
400102 -- Chemical & Spectral Procedures
400105 -- Separation Procedures
ALKYLATION
AROMATICS
CHEMICAL ANALYSIS
CHEMICAL COMPOSITION
CHEMICAL REACTIONS
CHROMATOGRAPHY
COMPARATIVE EVALUATIONS
DISPLACEMENT FLUIDS
FLUID INJECTION
FLUIDS
FRACTIONATION
GEL PERMEATION CHROMATOGRAPHY
HYDROXY COMPOUNDS
HYDROXYLATION
MOLECULAR WEIGHT
OIL WELLS
ORGANIC COMPOUNDS
PHENOLS
QUANTITATIVE CHEMICAL ANALYSIS
SEPARATION PROCESSES
SURFACTANTS
TITRATION
WATERFLOODING
WELLS