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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">kaz44</journal-id><journal-title-group><journal-title xml:lang="ru">Вестник Университета Шакарима. Серия технические науки</journal-title><trans-title-group xml:lang="en"><trans-title>Bulletin of Shakarim University. Technical Sciences</trans-title></trans-title-group></journal-title-group><issn pub-type="ppub">2788-7995</issn><issn pub-type="epub">3006-0524</issn><publisher><publisher-name>«Шәкәрім университеті» КеАҚ</publisher-name></publisher></journal-meta><article-meta><article-id pub-id-type="doi">10.53360/2788-7995-2025-2(18)-62</article-id><article-id custom-type="elpub" pub-id-type="custom">kaz44-1835</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>ХИМИЧЕСКАЯ ТЕХНОЛОГИЯ (ОРИГИНАЛЬНАЯ СТАТЬЯ)</subject></subj-group><subj-group subj-group-type="section-heading" xml:lang="en"><subject>CHEMICAL TECHNOLOGY (ORIGINAL ARTICLE)</subject></subj-group></article-categories><title-group><article-title>СИНЕРГЕТИЧЕСКИЙ ЭФФЕКТ 1,2-ФЕНИЛЕНДИАМИНА И НАФТАЛИН-1,5-ДИСУЛЬФОНАТА НАТРИЯ ДЛЯ УСИЛЕННОЙ ЗАЩИТЫ УГЛЕРОДИСТОЙ СТАЛИ ОТ КОРРОЗИИ В 0,5 М РАСТВОРЕ H2SO4: ЭКСПЕРИМЕНТАЛЬНЫЕ И ТЕОРЕТИЧЕСКИЕ ВЫВОДЫ</article-title><trans-title-group xml:lang="en"><trans-title>SYNERGISTIC EFFECT OF 1,2-PHENYLENEDIAMINE AND DISODIUM NAPHTHALENE-1,5- SULFONATE FOR ENHANCED CORROSION PROTECTION OF CARBON STEEL IN 0.5 M H2SO4 SOLUTION: EXPERIMENTAL AND THEORETICAL INSIGHTS</trans-title></trans-title-group></title-group><contrib-group><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0009-0007-9236-6155</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Кенжегалиева</surname><given-names>Р.</given-names></name><name name-style="western" xml:lang="en"><surname>Kenzhegalieva</surname><given-names>R.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Роза Жалгасовна Кенжегалиева – магистрант, </p><p>090000, Уральск, пр. Н. Назарбаева, 162</p></bio><bio xml:lang="en"><p>Roza Zhalgasovna Kenzhegalieva – master student, </p><p>090000, Uralsk, N. Nazarbayev Ave. 162</p></bio><email xlink:type="simple">rozka_k90@mail.ru</email><xref ref-type="aff" rid="aff-1"/></contrib><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0009-0004-5948-3868</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Жолдыбаев</surname><given-names>М.</given-names></name><name name-style="western" xml:lang="en"><surname>Zholdybayev</surname><given-names>M.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Маджан Кобландыулы Жолдыбаев – студент 4 курса, </p><p>090000, Уральск, пр. Н. Назарбаева, 162</p></bio><bio xml:lang="en"><p>Majan Kobylandyuly Zholdybayev – 4th year students, </p><p>090000, Uralsk, N. Nazarbayev Ave. 162</p></bio><email xlink:type="simple">gumarovkobylandy@gmail.com</email><xref ref-type="aff" rid="aff-1"/></contrib><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0001-9248-2753</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Акатьев</surname><given-names>Н.</given-names></name><name name-style="western" xml:lang="en"><surname>Akatyev</surname><given-names>N.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Николай Владимирович Акатьев – кандидат химических наук, старший преподаватель, </p><p>090000, Уральск, пр. Н. Назарбаева, 162</p></bio><bio xml:lang="en"><p>Nikolay Vladimirovich Akatyev – candidate of chemical sciences, senior lecturer, </p><p>090000, Uralsk, N. Nazarbayev Ave. 162</p></bio><email xlink:type="simple">nikolay.akatyev@wku.edu.kz</email><xref ref-type="aff" rid="aff-1"/></contrib></contrib-group><aff-alternatives id="aff-1"><aff xml:lang="ru">Западно-Казахстанский университет им. М. Утемисова<country>Казахстан</country></aff><aff xml:lang="en">M. Utemisov West Kazakhstan University<country>Kazakhstan</country></aff></aff-alternatives><pub-date pub-type="collection"><year>2025</year></pub-date><pub-date pub-type="epub"><day>08</day><month>07</month><year>2025</year></pub-date><volume>0</volume><issue>2(18)</issue><fpage>511</fpage><lpage>521</lpage><permissions><copyright-statement>Copyright &amp;#x00A9; Кенжегалиева Р., Жолдыбаев М., Акатьев Н., 2025</copyright-statement><copyright-year>2025</copyright-year><copyright-holder xml:lang="ru">Кенжегалиева Р., Жолдыбаев М., Акатьев Н.</copyright-holder><copyright-holder xml:lang="en">Kenzhegalieva R., Zholdybayev M., Akatyev N.</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://tech.vestnik.shakarim.kz/jour/article/view/1835">https://tech.vestnik.shakarim.kz/jour/article/view/1835</self-uri><abstract><p>В данной работе исследуется ингибирование коррозии углеродистой стали в среде в 0,5 М растворе H2SO4 с использованием бинарной системы 1,2-фенилендиамина и нафталин-1,5-дисульфоната натрия. Экспериментальные методы, включая метод потери массы, электрохимические методы и анализ поверхности, продемонстрировали значительную эффективность ингибирования, достигающую 88,43% при оптимальных условиях. Синергетический эффект между двумя компонентами составил 2,59, что указывает на значительное повышение эффективности по сравнению с отдельными компонентами. Расчётные исследования с использованием методов молекулярной динамики и DFT выявили сильные взаимодействия, обусловленные образованием водородных связей под действием электростатических сил во время адсорбции, которые стабилизируют защитный слой на поверхности металла. Механизм адсорбции соответствовал модели адсорбции Ленгмюра, а полученные термодинамические параметры подтвердили самопроизвольную физическую адсорбцию ингибитора. Результаты электрохимического анализа показали, что бинарная система является ингибитором смешанного типа, эффективно снижающим процессы как анодной, так и катодной коррозии. Эти результаты дают ценную информацию о разработке синергетических систем ингибиторов для промышленного применения.</p></abstract><trans-abstract xml:lang="en"><p>This work investigates the corrosion inhibition of carbon steel in 0.5 mol·dm⁻³ H₂SO₄ using a binary system of 1,2-phenylenediamine and disodium naphthalene-1,5-sulfonate. Experimental techniques, including weight loss assay, electrochemical methods, and surface analysis, demonstrated significant inhibition efficiency, reaching 88.43% under optimal conditions. The synergistic effect between the two components was evaluated as 2.59, indicating enhanced performance compared to individual components. Computational studies using molecular dynamics and DFT revealed strong interactions, driven by the formation of hydrogen bonding promoted by electrostatic forces during adsorption, which stabilize the protective layer on the metal surface. The adsorption mechanism was consistent with the Langmuir adsorption model, and obtained thermodynamic parameters confirmed spontaneous physisorption of the inhibitor. Electrochemical results identified the binary system as a mixed-type inhibitor, effectively reducing both anodic and cathodic corrosion processes. These findings provide valuable insights into the design of synergistic inhibitor systems for industrial applications.</p></trans-abstract><kwd-group xml:lang="ru"><kwd>защита металлов</kwd><kwd>синергетический эффект</kwd><kwd>ингибиторы коррозии</kwd><kwd>эффективность ингибирования</kwd><kwd>молекулярная динамика</kwd><kwd>дескрипторы реакционной способности</kwd></kwd-group><kwd-group xml:lang="en"><kwd>metal protection</kwd><kwd>synergistic effect</kwd><kwd>corrosion inhibitors</kwd><kwd>inhibition efficiency</kwd><kwd>molecular dynamics</kwd><kwd>reactivity descriptors</kwd></kwd-group></article-meta></front><back><ref-list><title>References</title><ref id="cit1"><label>1</label><citation-alternatives><mixed-citation xml:lang="ru">Kazieva R.Yu. Heteroorganic compounds are effective corrosion inhibitors of metal equipment / R.Yu. Kazieva, N.R. Abdullayeva, L.I. 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