A comparison of the inhibitory activity of 3-alkyland 3-hydroxyalkyl-5-amino-1H-1,2,4-triazoles against copper corrosion in chloride-containing environments

Keywords: Metal corrosion, Copper, Corrosion inhibitors, Heterocyclic compounds, Aminotriazoles, Physico-chemical research methods

Abstract

   Copper is widely used as a material for technical solutions in microelectronics, as well as for the manufacture of various heat exchange equipment used in aggressive environments. Corrosion inhibitors are used for the reduction of the corrosive activity of the environment. This article presents the results of a study of the anticorrosion activity of a number of derivatives of the class 3-alkyl- and 3-hydroxyalkyl-5-amino-1H-1,2,4-triazole with respect to copper corrosion in chloride-containing environment. Over the course of the study, 3-alkyl- and 3-hydroxyalkyl-5-amino-1H-1,2,4-triazoles with different lengths of the alkyl substituent were synthesized. The structure of these compounds was confirmed using NMR spectroscopy and HPLC/MS analysis. Based on the results of electrochemical and direct corrosion tests, regularities were established for the inhibitory activity of the obtained compounds in acidic (1% HCl solution) and neutral (borate buffer solution, pH = 7.4) chloride-containing media.
    In in a neutral media, the greatest protective effect was obtained for 3-propyl-5-amino-1H-1,2,4-triazole I, which has the shortest alkyl radical without modification by an OH group. As the concentration increased in the range from 0.01 to 10.0 mmol/L, the inhibitory activity increased. With an increase in the length of the alkyl radical and/or the introduction of an OH group, a decrease or absence of a protective effect was observed. At the same time, in an acidic medium, the introduction of a hydroxyl group into the alkyl substituent of 5-amino-1H-1,2,4-triazole increased anti-corrosion efficiency only with sufficient length of the carbon chain.
     The highest protection degree was obtained for 17-(5-amino-1H-1,2,4-triazol-3-yl)heptadecan-7-ol IV at a concentration of 10.0 mmol/l and it reached a value of 97%.

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Author Biographies

Denis V. Lyapun, Voronezh State University, 1 Universitetskaya pl., Voronezh 394018, Russian Federation

Engineer, Department of Organic
Chemistry, Voronezh State University (Voronezh,
Russian Federation).

Alexey A. Kruzhilin, Voronezh State University, 1 Universitetskaya pl., Voronezh 394018, Russian Federation

Cand. Sci. (Chem.), Researcher,
Laboratory of Organic Additives for the Processes of
Chemical and Electrochemical Deposition of Metals
and Alloys Used in the Electronics Industry, Voronezh
State University (Voronezh, Russian Federation).

Dmitry S. Shevtsov, Voronezh State University, 1 Universitetskaya pl., Voronezh 394018, Russian Federation

Junior Researcher, Laboratory
of Organic Additives for the Processes of Chemical and
Electrochemical Deposition of Metals and Alloys Used
in the Electronics Industry, Voronezh State University
(Voronezh, Russian Federation).

Andrey Yu. Potapov, Voronezh State University, 1 Universitetskaya pl., Voronezh 394018, Russian Federation

Dr. Sci. (Chem.), Head of the
Laboratory of Organic Additives for the Processes of
Chemical and Electrochemical Deposition of Metals
and Alloys Used in the Electronics Industry, Voronezh
State University (Voronezh, Russian Federation).

Khidmet S. Shikhaliev, Voronezh State University, 1 Universitetskaya pl., Voronezh 394018, Russian Federation

Dr. Sci. (Chem.), Full
Professor, Head of the Department of Organic
Chemistry, Voronezh State University (Voronezh,
Russian Federation).

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Published
2023-05-11
How to Cite
Lyapun, D. V., Kruzhilin, A. A., Shevtsov, D. S., Potapov, A. Y., & Shikhaliev, K. S. (2023). A comparison of the inhibitory activity of 3-alkyland 3-hydroxyalkyl-5-amino-1H-1,2,4-triazoles against copper corrosion in chloride-containing environments. Kondensirovannye Sredy I Mezhfaznye Granitsy = Condensed Matter and Interphases, 25(2), 198-206. https://doi.org/10.17308/kcmf.2023.25/11101
Section
Original articles

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