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Title: Influence of benzimidazole derivatives on corrosion and electrochemical behavior of iron

Abstract

The authors study the relation of the ..pi..-electron density of the molecules of benzimidazole and its derivatives and their inhibiting effect in hydrochloric acid. The compositions of the derivatives of synthesized benzimidazole were verified by ultimate analysis and IR spectroscopy. The ..pi..-electron densities were calculated on a computer. It was found that the introduction of a proton increases the charge re-distribution in the imidazole and benzene rings, with practically no change in the charge on the substituents. The efficiency of inhibition of corrosion was studied by the gravimetric and potentiodynamic methods. To elucidate the limiting stages of cathodic evolution of hydrogen and anodic solution of the metal, the authors recorded polarization curves for steel St3 without additive and with 20 mM benzimidazole, 1-(alpha-acetoxy)ethylbensimidazole and 1-acetylbenzimidazole. The polarization curves for various concentrations of benzimidazole and its derivatives in the pH range 0-2 and a calculation of the characteristics of the cathodic evolution of hydrogen suggest that the limiting stage of the process is delayed discharge.

Authors:
; ;
Publication Date:
Research Org.:
Chernigou Branch, Polytechnic Institute, Kiev
OSTI Identifier:
5573708
Resource Type:
Journal Article
Journal Name:
Prot. Met. (Engl. Transl.); (United States)
Additional Journal Information:
Journal Volume: 21:4
Country of Publication:
United States
Language:
English
Subject:
36 MATERIALS SCIENCE; CORROSION INHIBITORS; MATERIALS TESTING; IMIDAZOLES; IRON; CORROSION PROTECTION; ELECTROCHEMICAL CORROSION; CHARGE DISTRIBUTION; CORROSIVE EFFECTS; ELECTRON DENSITY; GRAVIMETRIC ANALYSIS; HYDROCHLORIC ACID; HYDROGEN; PH VALUE; POLARIZATION; POTENTIOMETRY; PROTONS; STAINLESS STEELS; ALLOYS; AZOLES; BARYONS; CHEMICAL ANALYSIS; CHEMICAL REACTIONS; CHROMIUM ALLOYS; CORROSION; CORROSION RESISTANT ALLOYS; ELEMENTARY PARTICLES; ELEMENTS; FERMIONS; HADRONS; HETEROCYCLIC COMPOUNDS; HYDROGEN COMPOUNDS; INORGANIC ACIDS; IRON ALLOYS; IRON BASE ALLOYS; METALS; NONMETALS; NUCLEONS; ORGANIC COMPOUNDS; ORGANIC NITROGEN COMPOUNDS; QUANTITATIVE CHEMICAL ANALYSIS; STEELS; TESTING; TITRATION; TRANSITION ELEMENTS; 360105* - Metals & Alloys- Corrosion & Erosion

Citation Formats

Makovei, G L, Keris, L D, and Kurmakova, I N. Influence of benzimidazole derivatives on corrosion and electrochemical behavior of iron. United States: N. p., 1986. Web.
Makovei, G L, Keris, L D, & Kurmakova, I N. Influence of benzimidazole derivatives on corrosion and electrochemical behavior of iron. United States.
Makovei, G L, Keris, L D, and Kurmakova, I N. 1986. "Influence of benzimidazole derivatives on corrosion and electrochemical behavior of iron". United States.
@article{osti_5573708,
title = {Influence of benzimidazole derivatives on corrosion and electrochemical behavior of iron},
author = {Makovei, G L and Keris, L D and Kurmakova, I N},
abstractNote = {The authors study the relation of the ..pi..-electron density of the molecules of benzimidazole and its derivatives and their inhibiting effect in hydrochloric acid. The compositions of the derivatives of synthesized benzimidazole were verified by ultimate analysis and IR spectroscopy. The ..pi..-electron densities were calculated on a computer. It was found that the introduction of a proton increases the charge re-distribution in the imidazole and benzene rings, with practically no change in the charge on the substituents. The efficiency of inhibition of corrosion was studied by the gravimetric and potentiodynamic methods. To elucidate the limiting stages of cathodic evolution of hydrogen and anodic solution of the metal, the authors recorded polarization curves for steel St3 without additive and with 20 mM benzimidazole, 1-(alpha-acetoxy)ethylbensimidazole and 1-acetylbenzimidazole. The polarization curves for various concentrations of benzimidazole and its derivatives in the pH range 0-2 and a calculation of the characteristics of the cathodic evolution of hydrogen suggest that the limiting stage of the process is delayed discharge.},
doi = {},
url = {https://www.osti.gov/biblio/5573708}, journal = {Prot. Met. (Engl. Transl.); (United States)},
number = ,
volume = 21:4,
place = {United States},
year = {Sat Mar 01 00:00:00 EST 1986},
month = {Sat Mar 01 00:00:00 EST 1986}
}