Nitrogen-containing inhibitors and their link to their protective mechanism with molecular structure
DOI:
https://doi.org/10.26577/2218-7979-2016-9-1-83-94Keywords:
Steel, Corrosion, Protective effect, Adsorption, Hydrogen sulfide inhibitor, Molecular structure, HydrophobicityAbstract
A potentiometric method was employed to determine the protective effects of the investigated heterofunctional organic compounds, which are potential inhibitors of corrosion of steel, by hydrogen sulfide. According to the results of potentiometric measurements, the most effective of the studied substances can be classified as film-forming inhibitors of mixed effect with anodic predominance. The analysis of the change of the inhibitory properties of aminodiesters was carried out to explain the connection of the protective effect of the inhibitors with their molecular structure. It wasbased on the principle of linearity of free energy. It was found that the most effective aminodiesters are characterized by the high hydrophobicity and electron-deficient property of the substituents. The article presents an explanation of the difference of the protective effects of the studied compounds based on their molecular structure and the nature of the corrosive environment. The obtained results can be used when synthesizing organic compounds with high inhibitory efficiency.
References
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2. Grigoriev V.P., Akylyk V.V. Chemical structure and protective action of inhibitors of corrosion. – Rostov on Don.: Publishing House of the University of Rostov, 1967. – P.191-194.
3. Lukovic I., Shaban A., Kalman A. Inhibitors of corrosion: Quantitative relationships between the structure and activiy. // Electrochemistry (Russia). – 2003. – V.39, № 2. – P.197-202.
4. Akylyk V.V., Grigoriev V.P. Nature of solvent and protective action of inhibitors of corrosion. – Rostov on Don.: Publishing House of the University of Rostov, 1984. – 191 p.
5. Kuznecov Yu. I. Modern state of the theory of inhibitors of metals // Journal of protection of metals (Russia). – 2002. – V.38, № 2. – P.122-131.
6. Kuznecov Yu. I. Dissolution of metals, its inhibition and principle of Pearson // Journal of protection of metals (Russia). – 1995. – V.31, № 3. – P.229-238.
7. Zhdanov Ya.A., Minkin V.I. Correlation analysis in organic chemistry – Rostov on Don.: Publishing House of the University of Rostov, 1966. – 469p.
8. Palm V.A. Fundamentals of quantitative theory of organic reactions. – М.: Chemistry, 1977. – 360 p.
9. Agres A.M., Alcybeeva A.I. Adsorption of quinoline and its metilproizvodnyh on the iron. A quantum calculation of electronic structures of adsorbing complexes quinolines with iron in acidic medium. // Journal of physical chemistry (Russia). – 1976. – V.50, № 2. – P.437-441.
10. Agres A.M., Alcybeeva A.I., Fedorov V.S., Levyn Z.S. About adsorption of piridine on iron and its methyl derivatives and their ability to retard corrosion. // Journal of physical chemistry (Russia). – 1976. – V.50, № 12. – P.3152-3155.
11. Doroshenko T.F., Skrypnik Ya.G., Lyashuk S.N. Parameters of the electronic structure and protective effect of pyridine compounds. // Journal of protection of metals (Russia). – 1996. – V.32, № 5. – P.521-527.
12. Kovalenko V.V., Beloglazov S.M. Белоглазов С.М. Матер. 4-й Мiжнар. конф. – виставки «Проблеми корозii i протикорозiйного захисту матерiалiв. Корозiя-98». – Львiв: Вид-во Фiзико-механiчного iнституту, 1998. – 342 с.
13. Ralph G. Pearson. Absolute Electronegativity and Hardness: Applications to Organic Chemistry // J. Org. Chem. – 1989. – Vol. 54, №6. – P.1423-1430.
14. Kuznecov Yu. I., Frolova L.V. Tomina E.V. About inhibition of hydrogen sulphide of steels by quarternary ammonium salts. // Journal of protection of metals (Russia). – 2006. – V.42, № 3. – P.233-238.
15. Antropov L.I. Theoretical electrochemistry: textbook for chemical and chemical-technological specialties of higher institutions. 4 edition, processed and extended, – H.: Higher school, 1984. – 520 p.
16. Burkitbaeva B.D. Nitrogen containing inhibitors and the relation of their protecting action with the molecular structure // Eurasian Chemico-technological journal. – 2006. – №1-2. – P. 97-102.
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How to Cite
Burkitbayeva, B. D., A. M. Argimbayeva, G. S. Rakhymbay, G. S. Beisenova, and Kh. Avchukir. 2016. “Nitrogen-Containing Inhibitors and Their Link to Their Protective Mechanism With Molecular Structure”. International Journal of Biology and Chemistry 9 (1):83-94. https://doi.org/10.26577/2218-7979-2016-9-1-83-94.
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