Inhibition in hydrocarbon and hydrocarbon-aqueous media
- Institute of Physical Chemistry, Academy of Sciences of the USSR, Leninsky Prospect 31, 117915 GSP Moscow (SU)
Different proposed approaches to evaluating the mechanisms of corrosion inhibition of organic inhibitors of diphilic structure that contain both the polar and non-polar fragments are considered, special attention being paid to inhibition in media containing an aqueous electrolyte and a hydrocarbon phase. Critical analysis of the results of studies including those of the authors indicate that the broadly accepted conception of chemosorption and donor-acceptor bond on metal surfaces as the main factors responsible for the protective ability of an organic inhibitor cannot be applied to the inhibitors in these media. Comparison of the inhibition effects in a series of organic compounds with various polar and non-polar groups enables one to deduce some conclusions on the relative contributions of these groups to the protection of metals. Effects of medium pH, composition and the concentration of the hydrocarbon phase, its ability to interact with the inhibitors present, presence of aggressive ions in the electrolyte, etc. are also considered.
- OSTI ID:
- 6666356
- Report Number(s):
- CONF-890437-
- Resource Relation:
- Conference: Corrosion '89, New Orleans, LA (USA), 17-21 Apr 1989; Other Information: Technical Paper 89137
- Country of Publication:
- United States
- Language:
- English
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37 INORGANIC
ORGANIC
PHYSICAL AND ANALYTICAL CHEMISTRY
CORROSION INHIBITORS
CHEMICAL REACTION KINETICS
METALS
CORROSION PROTECTION
ORGANIC COMPOUNDS
SOLUBILITY
CHEMICAL COMPOSITION
CHEMISORPTION
ELECTROCHEMICAL CORROSION
ELECTROLYTES
HYDROCARBONS
MATERIALS TESTING
PH VALUE
PROTECTIVE COATINGS
CHEMICAL REACTIONS
COATINGS
CORROSION
ELEMENTS
KINETICS
REACTION KINETICS
SEPARATION PROCESSES
SORPTION
TESTING
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400201 - Chemical & Physicochemical Properties
360105 - Metals & Alloys- Corrosion & Erosion
400400 - Electrochemistry