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Abstract <p>The effect of the structure on the inhibitory properties of ketoximes in a simulated NACE formation water saturated with carbon dioxide and hydrogen sulfide has been studied. The influence of medium temperature and exposure time on inhibitory properties has been established. The influence of the “structure–property,” kinetic and physico-chemical parameters of interaction, as well as the mechanism of adsorption on the metal surface are investigated. Based on the obtained values, it is proved that the neutral form of acetophenonoxime is more preferable for the adsorption process on the metal surface than the protonated one. This phenomenon is explained by the fact that neutral molecules are more “soft” compounds and have low stability, and, consequently, tend to transfer electrons by iron atoms with electron deficiency.</p>

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Study of Thermodynamic Features of Ketoximes as Corrosion Inhibitors in Hydrogen Sulfide-Containing Media

  • 期刊论文

  • 发表日期：

    2025年6月1日

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  • D. Yu. Karachevsky,
  • A. G. Mustafin

摘要

Abstract

The effect of the structure on the inhibitory properties of ketoximes in a simulated NACE formation water saturated with carbon dioxide and hydrogen sulfide has been studied. The influence of medium temperature and exposure time on inhibitory properties has been established. The influence of the “structure–property,” kinetic and physico-chemical parameters of interaction, as well as the mechanism of adsorption on the metal surface are investigated. Based on the obtained values, it is proved that the neutral form of acetophenonoxime is more preferable for the adsorption process on the metal surface than the protonated one. This phenomenon is explained by the fact that neutral molecules are more “soft” compounds and have low stability, and, consequently, tend to transfer electrons by iron atoms with electron deficiency.