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<article article-type="research-article" dtd-version="1.3" xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xml:lang="ru"><front><journal-meta><journal-id journal-id-type="publisher-id">corrosionprotection</journal-id><journal-title-group><journal-title xml:lang="ru">Практика противокоррозионной защиты</journal-title><trans-title-group xml:lang="en"><trans-title>Theory and Practice of Corrosion Protection</trans-title></trans-title-group></journal-title-group><issn pub-type="ppub">1998-5738</issn><issn pub-type="epub">2658-6797</issn><publisher><publisher-name>Association "CARTEC"</publisher-name></publisher></journal-meta><article-meta><article-id pub-id-type="doi">10.31615/j.corros.prot.2022.106.4-4</article-id><article-id custom-type="elpub" pub-id-type="custom">corrosionprotection-11</article-id><article-categories><subj-group subj-group-type="heading"><subject>Research Article</subject></subj-group><subj-group subj-group-type="section-heading" xml:lang="ru"><subject>МАТЕРИАЛЫ И ОБОРУДОВАНИЕ ДЛЯ ПРОТИВОКОРРОЗИОННОЙ ЗАЩИТЫ</subject></subj-group><subj-group subj-group-type="section-heading" xml:lang="en"><subject>MATERIALS AND EQUIPMENT FOR  CORROSION PROTECTION</subject></subj-group></article-categories><title-group><article-title>Защитная эффективность омепразола против сероводородной коррозии углеродистой стали</article-title><trans-title-group xml:lang="en"><trans-title>Protective efficacy of omeprazole against hydrogen sulfide corrosion of carbon steel</trans-title></trans-title-group></title-group><contrib-group><contrib contrib-type="author" corresp="yes"><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Цыганкова</surname><given-names>Л. Е.</given-names></name><name name-style="western" xml:lang="en"><surname>Tsygankova</surname><given-names>L. E.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Цыганкова Людмила Евгеньевна, д.х.н., профессор, заведующая кафедрой химии</p><p>г. Тамбов, ул. Интернациональная, д. 33</p></bio><bio xml:lang="en"><p>Liudmila E. Tsygankova, Doctor of Chemistry, Professor,Head of Department of Chemistry</p><p>33, Internatsyonalnaya st., Tambov</p></bio><email xlink:type="simple">vits21@mail.ru</email><xref ref-type="aff" rid="aff-1"/></contrib><contrib contrib-type="author" corresp="yes"><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Брыксина</surname><given-names>В. А.</given-names></name><name name-style="western" xml:lang="en"><surname>Bryksina</surname><given-names>V. A.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Брыксина Виктория Александровна, аспирант</p><p>г. Тамбов, ул. Интернациональная, д. 33</p></bio><bio xml:lang="en"><p>Viktoriya A. Bryksina, postgraduate student</p><p>33, Internatsyonalnaya st., Tambov</p></bio><xref ref-type="aff" rid="aff-1"/></contrib><contrib contrib-type="author" corresp="yes"><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Алехина</surname><given-names>О. А.</given-names></name><name name-style="western" xml:lang="en"><surname>Alekhina</surname><given-names>O. V.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Алехина Ольга Владимировна, к.х.н., доцент кафедры химии</p><p>г. Тамбов, ул. Интернациональная, д. 33</p></bio><bio xml:lang="en"><p>Olga V. Alekhina, PhD in Chemistry, associate professor</p><p>33, Internatsyonalnaya st., Tambov</p></bio><xref ref-type="aff" rid="aff-1"/></contrib><contrib contrib-type="author" corresp="yes"><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Шель</surname><given-names>Н. В.</given-names></name><name name-style="western" xml:lang="en"><surname>Shel</surname><given-names>N. V.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Шель Наталья Владимировна, д.х.н., профессор кафедры «Химия и химические технологии»</p><p>г. Тамбов, ул. Советская, д. 106</p></bio><bio xml:lang="en"><p>Natalia V. Shel, Doctor of Chemistry, Professor of «Chemistry and Chemical Technology» Department</p><p>106, Sovetskaya st., Tambov</p></bio><xref ref-type="aff" rid="aff-2"/></contrib></contrib-group><aff-alternatives id="aff-1"><aff xml:lang="ru"><institution>Тамбовский государственный университет имени Г.Р. Державина</institution><country>Россия</country></aff><aff xml:lang="en"><institution>Derzhavin State University</institution><country>Russian Federation</country></aff></aff-alternatives><aff-alternatives id="aff-2"><aff xml:lang="ru"><institution>Тамбовский государственный технический университет</institution><country>Россия</country></aff><aff xml:lang="en"><institution>Tambov State Technical University</institution><country>Russian Federation</country></aff></aff-alternatives><pub-date pub-type="collection"><year>2022</year></pub-date><pub-date pub-type="epub"><day>17</day><month>04</month><year>2023</year></pub-date><volume>27</volume><issue>4</issue><fpage>36</fpage><lpage>44</lpage><permissions><copyright-statement>Copyright &amp;#x00A9; Цыганкова Л.Е., Брыксина В.А., Алехина О.А., Шель Н.В., 2023</copyright-statement><copyright-year>2023</copyright-year><copyright-holder xml:lang="ru">Цыганкова Л.Е., Брыксина В.А., Алехина О.А., Шель Н.В.</copyright-holder><copyright-holder xml:lang="en">Tsygankova L.E., Bryksina V.A., Alekhina O.V., Shel N.V.</copyright-holder><license xml:lang="ru" license-type="creative-commons-attribution" xlink:href="https://creativecommons.org/licenses/by/4.0/" xlink:type="simple"><license-p>Данная работа распространяется под лицензией Creative Commons Attribution 4.0.</license-p></license><license xml:lang="en" license-type="creative-commons-attribution" xlink:href="https://creativecommons.org/licenses/by/4.0/" xlink:type="simple"><license-p>This work is licensed under a Creative Commons Attribution 4.0 License.</license-p></license></permissions><self-uri xlink:href="https://www.corrosion-protection.ru/jour/article/view/11">https://www.corrosion-protection.ru/jour/article/view/11</self-uri><abstract><p>Просроченные лекарства изучаются в качестве ингибиторов коррозии металлов в различных средах более 10 лет. Подобное их использование обусловлено структурой молекул, содержащих ненасыщенные связи, ароматические кольца и гетероатомы, такие, как O, N, S и др., как и обычные органические ингибиторы. В данной работе исследован ингибирующий эффект просроченного лекарства Omeprazole по отношению к коррозии углеродистой стали в модели пластовой воды NACE, содержащей 400 мг/л сероводофрода. Концентрация омепразола варьировала в пределах 10…60 мг/л. Исследования проведены методами гравиметрии, потенциодинамической поляризации и импедансной спектроскопии. Ингибиторные свойства омепразола в исследуемой среде оцениваются как средние с величиной защитного эффекта 75…80% при максимальной исследованной концентрации. Ингибитор вызывает замедление обеих электродных реакций. Адсорбция омепразола на поверхности стали описывается изотермой Ленгмюра. Рассчитанная величина свободной энергии адсорбции (29 кДж/моль) свидетельствует о хемосорбции ингибитора</p></abstract><trans-abstract xml:lang="en"><p>Expired drugs have been studied as corrosion inhibitors for metals in various environments for more than 10 years. Their similar use is due to the structure of molecules containing unsaturated bonds, aromatic rings and heteroatoms, such as O, N, S, etc., as well as conventional organic inhibitors. In this work, the inhibitory effect of expired drug Omeprazole against carbon steel corrosion in a NACE model stratum water containing 400 mg/L hydrogen sulfide was investigated. The concentration of omeprazole varied within 10…60 mg/L. The studies were carried out by gravimetry, potentiodynamic polarization and impedance spectroscopy methods. The inhibitory properties of omeprazole in the studied medium are estimated as average with a protective effect of 75…80% at the maximum concentration studied. The inhibitor causes a slowdown in both electrode reactions. The adsorption of omeprazole on the steel surface is described by the Langmuir isotherm. The calculated value of the free energy of adsorption (-29 kJ/mol) indicates the chemisorption of the inhibitor.</p></trans-abstract><kwd-group xml:lang="ru"><kwd>просроченное лекарство</kwd><kwd>омепразол</kwd><kwd>углеродистая сталь</kwd><kwd>коррозия</kwd><kwd>ингибирование</kwd><kwd>адсорбция</kwd><kwd>сероводородная среда</kwd></kwd-group><kwd-group xml:lang="en"><kwd>expired drug</kwd><kwd>omeprazole</kwd><kwd>carbon steel</kwd><kwd>corrosion</kwd><kwd>inhibition</kwd><kwd>adsorption</kwd><kwd>hydrogen sulfide environment</kwd></kwd-group><funding-group><funding-statement xml:lang="ru">Результаты получены с использованием оснащения Центра коллективного пользования научным оборудованием ТГУ имени Г.Р. Державина. Работа поддержана Министерством науки и высшего образования Российской федерации в рамках проекта по соглашению № 075-15-2021-709 (уникальный идентификатор проекта RF – 2296.61321X0037)»</funding-statement></funding-group></article-meta></front><back><ref-list><title>References</title><ref id="cit1"><label>1</label><citation-alternatives><mixed-citation xml:lang="ru">Pathak R.K., Mishra P. Drugs as Corrosion Inhibitors: A Review // Intern. J. Sci. Res. – 2016. – V. 5, № 4. – P. 671-677. www.ijsr.net</mixed-citation><mixed-citation xml:lang="en">Pathak, R. K., Mishra, P. (2016). Drugs as Corrosion Inhibitors: A Review. Intern. J. Sci. Res. 5, 671- 677. www.ijsr.net</mixed-citation></citation-alternatives></ref><ref id="cit2"><label>2</label><citation-alternatives><mixed-citation xml:lang="ru">Verma C., Chauhan D.S., Quraishi M.A. Drugs as environmentally benign corrosion inhibitors for ferrous and nonferrous materials in acid environment: An overview // J. Mater. 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