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<article 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" xmlns:ali="http://www.niso.org/schemas/ali/1.0/" article-type="research-article" dtd-version="1.2" xml:lang="en"><front><journal-meta><journal-id journal-id-type="publisher-id">Russian Journal of Physical Chemistry A</journal-id><journal-title-group><journal-title xml:lang="en">Russian Journal of Physical Chemistry A</journal-title><trans-title-group xml:lang="ru"><trans-title>Журнал физической химии</trans-title></trans-title-group></journal-title-group><issn publication-format="print">0044-4537</issn><issn publication-format="electronic">3034-5537</issn><publisher><publisher-name xml:lang="en">The Russian Academy of Sciences</publisher-name></publisher></journal-meta><article-meta><article-id pub-id-type="publisher-id">685273</article-id><article-id pub-id-type="doi">10.31857/S0044453725020088</article-id><article-id pub-id-type="edn">DDWAOI</article-id><article-categories><subj-group subj-group-type="toc-heading" xml:lang="en"><subject>CHEMICAL KINETICS AND CATALYSIS</subject></subj-group><subj-group subj-group-type="toc-heading" xml:lang="ru"><subject>ХИМИЧЕСКАЯ КИНЕТИКА И КАТАЛИЗ</subject></subj-group><subj-group subj-group-type="article-type"><subject>Research Article</subject></subj-group></article-categories><title-group><article-title xml:lang="en">Dechlorination of chloride-sulfate solutions using ozone</article-title><trans-title-group xml:lang="ru"><trans-title>Дехлорирование хлоридно-сульфатных растворов с использованием озона</trans-title></trans-title-group></title-group><contrib-group><contrib contrib-type="author"><name-alternatives><name xml:lang="en"><surname>Levanov</surname><given-names>A. V.</given-names></name><name xml:lang="ru"><surname>Леванов</surname><given-names>А. В.</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><bio xml:lang="en"><p>Department of Chemistry</p></bio><bio xml:lang="ru"><p>Химический факультет</p></bio><email>levanovav@my.msu.ru</email><xref ref-type="aff" rid="aff1"/></contrib><contrib contrib-type="author"><name-alternatives><name xml:lang="en"><surname>Orudzhev</surname><given-names>A. O.</given-names></name><name xml:lang="ru"><surname>Оруджов</surname><given-names>А. О.</given-names></name></name-alternatives><address><country country="AZ">Azerbaijan</country></address><email>levanovav@my.msu.ru</email><xref ref-type="aff" rid="aff2"/></contrib><contrib contrib-type="author"><name-alternatives><name xml:lang="en"><surname>Isaikina</surname><given-names>O. Y.</given-names></name><name xml:lang="ru"><surname>Исайкина</surname><given-names>О. Я.</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><bio xml:lang="en"><p>Department of Chemistry</p></bio><bio xml:lang="ru"><p>Химический факультет</p></bio><email>levanovav@my.msu.ru</email><xref ref-type="aff" rid="aff1"/></contrib></contrib-group><aff-alternatives id="aff1"><aff><institution xml:lang="en">M. V. Lomonosov Moscow State University, Department of Chemistry</institution></aff><aff><institution xml:lang="ru">Московский государственный университет имени М. В. Ломоносова</institution></aff></aff-alternatives><aff-alternatives id="aff2"><aff><institution xml:lang="en">Branch of M. V. Lomonosov Moscow State University in Baku</institution></aff><aff><institution xml:lang="ru">Московский государственный университет имени М. В. Ломоносова, филиал в г. Баку</institution></aff></aff-alternatives><pub-date date-type="pub" iso-8601-date="2025-02-15" publication-format="electronic"><day>15</day><month>02</month><year>2025</year></pub-date><volume>99</volume><issue>2</issue><fpage>237</fpage><lpage>242</lpage><history><date date-type="received" iso-8601-date="2025-06-19"><day>19</day><month>06</month><year>2025</year></date></history><permissions><copyright-statement xml:lang="en">Copyright ©; 2025, Russian Academy of Sciences</copyright-statement><copyright-statement xml:lang="ru">Copyright ©; 2025, Российская академия наук</copyright-statement><copyright-year>2025</copyright-year><copyright-holder xml:lang="en">Russian Academy of Sciences</copyright-holder><copyright-holder xml:lang="ru">Российская академия наук</copyright-holder></permissions><self-uri xlink:href="https://journals.eco-vector.com/0044-4537/article/view/685273">https://journals.eco-vector.com/0044-4537/article/view/685273</self-uri><abstract xml:lang="en"><p>The kinetic characteristics of the chlorine release reaction during oxidation of chloride ion in solutions of Na<sup>+</sup> – H<sup>+</sup> – HSO<sub>4</sub><sup>–</sup> – Cl<sup>–</sup>, Mg<sup>2+</sup> – H<sup>+</sup> – HSO<sub>4</sub><sup>–</sup> – Cl<sup>–</sup>, Zn<sup>2+</sup> – H<sup>+</sup> – HSO<sub>4</sub><sup>–</sup> – Cl<sup>–</sup>, Cu<sup>2+</sup> – H<sup>+</sup> – HSO<sub>4</sub><sup>–</sup> – Cl<sup>–</sup>, Fe<sup>3+</sup> – H<sup>+</sup> – HSO<sub>4</sub><sup>–</sup> – Cl<sup>–</sup>, Mg<sup>2+</sup> – H<sup>+</sup> – Cl<sup>–</sup>, Ca<sup>2+</sup> – H<sup>+</sup> – Cl<sup>–</sup> are found. Under similar experimental parameters, the reaction rate takes significantly different values depending on the nature of the added salt. This is due to the possibility of catalyzing the reaction of O<sub>3</sub> with Cl<sup>–</sup>(aq) cations of some metals and the formation of chloride and sulfate metal complexes, which leads to changes in the actual concentrations of reagents, as well as changes in the ozone solubility. For aqueous solutions of zinc sulfate and magnesium sulfate with concentrations of 0–1 M at temperatures of 20 and 25°C, ozone solubility, values of the Henry constant and Sechenov coefficient are found.</p></abstract><trans-abstract xml:lang="ru"><p>Определены кинетические характеристики реакции выделения хлора при окислении хлорид-иона в растворах Na<sup>+</sup> – H<sup>+</sup> – HSO<sub>4</sub><sup>–</sup> – Cl<sup>–</sup>, Mg<sup>2+</sup> – H<sup>+</sup> – HSO<sub>4</sub><sup>–</sup> – Cl<sup>–</sup>, Zn<sup>2+</sup> – H<sup>+</sup> – HSO<sub>4</sub><sup>–</sup> – Cl<sup>–</sup>, Cu<sup>2+</sup> – H<sup>+</sup> – HSO<sub>4</sub><sup>–</sup> – Cl<sup>–</sup>, Fe<sup>3+</sup> – H<sup>+</sup> – HSO<sub>4</sub><sup>–</sup> – Cl<sup>–</sup>, Mg<sup>2+</sup> – H<sup>+</sup> – Cl<sup>–</sup>, Ca<sup>2+</sup> – H<sup>+</sup> – Cl<sup>–</sup>. При аналогичных параметрах эксперимента, скорость реакции принимает существенно различные значения в зависимости от природы добавленной соли. Это обусловлено возможностью катализа реакции О<sub>3</sub> с Cl<sup>–</sup>(aq) катионами некоторых металлов, образованием хлоридных и сульфатных металлокомплексов, что приводит к изменению действительных концентраций реагентов, а также изменением растворимости озона. Для водных растворов сульфата цинка и сульфата магния с концентрациями 0–1 М при температурах 20 и 25°C найдены растворимость озона, значения константы Генри и коэффициента Сеченова.</p></trans-abstract><kwd-group xml:lang="en"><kwd>ozone</kwd><kwd>chloride ion</kwd><kwd>dechlorination</kwd><kwd>solubility</kwd><kwd>Henry constant</kwd><kwd>zinc sulfate</kwd><kwd>magnesium sulfate</kwd></kwd-group><kwd-group xml:lang="ru"><kwd>озон</kwd><kwd>хлорид-ион</kwd><kwd>дехлорирование</kwd><kwd>растворимость</kwd><kwd>константа Генри</kwd><kwd>сульфат цинка</kwd><kwd>сульфат магния</kwd></kwd-group><funding-group><award-group><funding-source><institution-wrap><institution xml:lang="ru">Правительство РФ</institution></institution-wrap><institution-wrap><institution xml:lang="en">Government of RF</institution></institution-wrap></funding-source></award-group></funding-group></article-meta></front><body></body><back><ref-list><ref id="B1"><label>1.</label><mixed-citation>Lowe J.B. // Corrosion. 1961 V. 17. № 3. 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