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Aspects of Interaction of Surfactant—Acid Compositions at Phase Boundary with Hydrocarbons
- Source :
- Russian Journal of Applied Chemistry. 92:1810-1819
- Publication Year :
- 2019
- Publisher :
- Pleiades Publishing Ltd, 2019.
-
Abstract
- Most part of all additives to technological fluids for acid treatments of oil-extracting wells are surfactants. One of approaches to assess the behavior of surfactants in these compositions is to determine the interfacial tension of their solutions at the interface with hydrocarbons. The interfacial tension of surfactant—acid compositions based on hydrochloric and sulfamic acids and also on distilled water without addition of acids. The interfacial tension was determined at the boundary with n-octane, kerosene, and oil with different polarities and contents of natural surfactants. It was shown that n-octane and kerosene are model systems that allow conditional comparison in activity between surfactants. A dependence was found of the interfacial tension of a surfactant—acid formulations on the nature of an acid: sulfamic acid affects the activity of surfactants positively, and hydrochloric acid, negatively. The interfacial tension parameter being determined is strongly affected by the type of a surfactant. It was shown that the nonionogenic surfactant Neonol AF 9–12 shows the smallest values of the interfacial tension in the formulations based on distilled water, and the anionic surfactant Nezhegol, in acid formulations, which is due to the interaction of the functional group of a surfactant with hydroxonium ions present in solution.
- Subjects :
- Phase boundary
Kerosene
General Chemical Engineering
Hydrochloric acid
02 engineering and technology
General Chemistry
010402 general chemistry
021001 nanoscience & nanotechnology
01 natural sciences
0104 chemical sciences
law.invention
Surface tension
chemistry.chemical_compound
chemistry
Pulmonary surfactant
Magazine
Chemical engineering
Distilled water
law
Sulfamic acid
0210 nano-technology
Subjects
Details
- ISSN :
- 16083296 and 10704272
- Volume :
- 92
- Database :
- OpenAIRE
- Journal :
- Russian Journal of Applied Chemistry
- Accession number :
- edsair.doi...........cbc265478051e909b752c5ddad7a1890