Some amides and mixtures based on them as acid corrosion inhibitors
https://doi.org/10.61852/2949-3412-2024-2-2-45-60
Abstract
The protective effects of coconut oil mono- and diethanolamide (MEAC, DEAC), tall oil monoethanolamide (MEAT), sunflower oil diethanolamide (DEAP), as well as mixtures of MEAC with inorganic salts (chloride, bromide, potassium iodide and thiocyanate) during corrosion of steel in sulfuric acid. It has been established that at the studied concentrations, amides and inorganic salts provide protection of steel from corrosion in 0,5 M sulfuric acid by 70–91% and 90–94% at a temperature of 20°C, respectively. A mixture of MEAC (0,5%) with inorganic salts (0,01 M) protects steel at the specified temperature by 94–99%. As the temperature increases, the effectiveness of individual compounds and inhibitor mixtures decreases. The influence of components and their mixtures on particular electrode reactions of the corrosion process has been established. The degree of surface coverage with inhibitors and the free energy of adsorption were determined.
About the Authors
A. G. Berezhnaya
Federal State Autonomous Educational Institution of Higher Education «Southern Federal University»
Russian Federation
Russian Federation
st. B. Sadovaya 105/42, Rostov-on-Don 344006
V. V. Chernyavina
Federal State Autonomous Educational Institution of Higher Education «Southern Federal University»
Russian Federation
Russian Federation
st. B. Sadovaya 105/42, Rostov-on-Don 344006
E. S. Khudoleeva
Federal State Autonomous Educational Institution of Higher Education «Southern Federal University»
Russian Federation
Russian Federation
st. B. Sadovaya 105/42, Rostov-on-Don 344006
A. S. Rybalchenko
Federal State Autonomous Educational Institution of Higher Education «Southern Federal University»
Russian Federation
Russian Federation
st. B. Sadovaya 105/42, Rostov-on-Don 344006
References
1. Ya.G. Avdeev, K.L. Anfilov and Yu.I. Kuznetsov, Effect of nitrogen-containing inhibitors on the corrosion inhibition of low-carbon steel in solutions of mineral acids with various anionic compositions, Int. J. Corros. Scale Inhib., 2021, 10, no. 4, 1566–1586. doi: 10.17675/2305-6894-2021-10-4-12
2. Я.Г. Авдеев и М.В. Тюрина, Ингибирование кислотной коррозии металлов N-содержащими шестичленными гетероциклами, Коррозия: материалы, защита, 2017, no. 5, 1–12.
3. П.С. Фахретдинов, И.Ю. Голубев и Р.Ф. Хамидуллин, Новые имидазолиниевые соединения на основе оксиэтилированых алкилфенолов – ингибиторы кислотной коррозии, Вестник Казанского технологического университета, 2010, no. 1, 280–287.
4. В.В. Пантелеева, А.Б. Шеин и И.С. Полковников, Адсорбция ряда производных тиадиазола на малоуглеродистой стали из растворов серной кислоты, Коррозия: материалы, защита, 2019, no. 5, 31–36. doi: 10.31044/1813-7016-2019-0-5-31-36
5. A.G. Berezhnaya, V.V. Chernyavina, E.S. Khudoleeva and I.I. Krotkii, Some imidazolines as inhibitors of steel corrosion in hydrochloric acid, Int. J. Corros. Scale Inhib., 2021, 10, no. 4, 1428–1440. doi: 10.17675/2305-6894-2021-10-4-4
6. A.G. Berezhnaya, E.S.Khudoleeva and V.V. Chernyavina, Some imidazolines and their mixtures with inorganic anions as inhibitors of acid corrosion of steel, Int. J. Corros. Scale Inhib., 2021, 10, no. 2, 649–661. doi: 10.17675/2305-6894-2021-10-2-11
7. Л.И. Антропов, Формальная теория действия органических ингибиторов коррозии, Защита металлов, 1977, 13, no. 4, 387–399.
8. С.М. Решетников, Ингибирование кислотной коррозии металлов, Ижевск: Удмуртия, 1980, 128 с.
9. А.Ю. Лучкин, О.А. Гончарова и Н.Н. Андреев, Смесевые ингибиторы. Взаимное влияние компонентов, Коррозия: материалы, защита, 2021, no. 1, 27–32. doi: 10.31044/1813-7016-2021-0-1-27-32
10. В.В. Экилик и О.В. Чиков, Некоторые диагностические критерии взаимного влияния ингибиторов кислотной коррозии металлов. Защита металлов, 1991, 27, no. 1, 72–82.
Review
For citations:
Berezhnaya A.G., Chernyavina V.V., Khudoleeva E.S., Rybalchenko A.S. Some amides and mixtures based on them as acid corrosion inhibitors. Title in english. 2024;(2):45-60. (In Russ.) https://doi.org/10.61852/2949-3412-2024-2-2-45-60
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