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Abstract <p>In this work, the protective efficiency of aspen bark <i>Pópulus tremula</i> alcoholic extract as an inhibitor of corrosion of St3 steel in the NACE formation water imitation containing H<sub>2</sub>S and CO<sub>2</sub> was investigated. According to the daily gravimetric tests, the protective effect (<i>Z</i>) of the extract at a concentration of 200&#xa0;mg/L in a NACE medium without additives is 74%, in the presence of CO<sub>2</sub> it increases to 83%, with the introduction of H<sub>2</sub>S it reaches 91%, and in the combined presence of H<sub>2</sub>S and CO<sub>2</sub> it is 88%. An increase in the duration of corrosion tests has virtually no effect on the protective effect magnitude. Polarization curves show that the aspen bark extract in a NACE medium, without additives, slows the anodic process, and in the presence of hydrogen sulfide, slows the cathodic process.</p>

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Evaluation of Inhibitory Properties of Aspen Bark Extract in Hydrogen Sulfide and Carbon Dioxide Environments

  • 期刊论文

  • 发表日期：

    2025年7月1日

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  • A. A. Uryadnikov,
  • I. V. Komarov,
  • L. D. Rodionova,
  • M. N. Uryadnikova,
  • O. V. Alyokhina

摘要

Abstract

In this work, the protective efficiency of aspen bark Pópulus tremula alcoholic extract as an inhibitor of corrosion of St3 steel in the NACE formation water imitation containing H2S and CO2 was investigated. According to the daily gravimetric tests, the protective effect (Z) of the extract at a concentration of 200 mg/L in a NACE medium without additives is 74%, in the presence of CO2 it increases to 83%, with the introduction of H2S it reaches 91%, and in the combined presence of H2S and CO2 it is 88%. An increase in the duration of corrosion tests has virtually no effect on the protective effect magnitude. Polarization curves show that the aspen bark extract in a NACE medium, without additives, slows the anodic process, and in the presence of hydrogen sulfide, slows the cathodic process.