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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">zhps</journal-id><journal-title-group><journal-title xml:lang="ru">Журнал прикладной спектроскопии</journal-title><trans-title-group xml:lang="en"><trans-title>Zhurnal Prikladnoii Spektroskopii</trans-title></trans-title-group></journal-title-group><issn pub-type="ppub">0514-7506</issn><publisher><publisher-name>B. I. Stepanov Institute of Physics of the National Academy of Sciences</publisher-name></publisher></journal-meta><article-meta><article-id pub-id-type="doi">10.47612/0514-7506-2022-89-3-341-347</article-id><article-id custom-type="elpub" pub-id-type="custom">zhps-1049</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>Статьи</subject></subj-group></article-categories><title-group><article-title>Кинетика растворения оксида гадолиния в хлоридном расплаве GdCl3-KCl по данным спектроскопии комбинационного рассеяния света</article-title><trans-title-group xml:lang="en"><trans-title>Gadolinium Oxide Dissolution Kinetics in Chloride GdCl3-KCl Melt According to Raman Spectroscopy Data</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>Закирьянова</surname><given-names>И. Д.</given-names></name><name name-style="western" xml:lang="en"><surname>Zakiryanova</surname><given-names>I. D.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Екатеринбург</p></bio><bio xml:lang="en"><p>Ekaterinburg</p></bio><email xlink:type="simple">optic96@mail.ru</email><xref ref-type="aff" rid="aff-1"/></contrib></contrib-group><aff-alternatives id="aff-1"><aff xml:lang="ru"><institution>Институт высокотемпературной электрохимии Уральского отделения Российской АН</institution></aff><aff xml:lang="en"><institution>Institute of High-Temperature Electrochemistry, Ural Branch of Russian Academy of Sciences</institution></aff></aff-alternatives><pub-date pub-type="collection"><year>2022</year></pub-date><pub-date pub-type="epub"><day>25</day><month>05</month><year>2022</year></pub-date><volume>89</volume><issue>3</issue><fpage>341</fpage><lpage>347</lpage><permissions><copyright-statement>Copyright &amp;#x00A9; Закирьянова И.Д., 2022</copyright-statement><copyright-year>2022</copyright-year><copyright-holder xml:lang="ru">Закирьянова И.Д.</copyright-holder><copyright-holder xml:lang="en">Zakiryanova I.D.</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://zhps.ejournal.by/jour/article/view/1049">https://zhps.ejournal.by/jour/article/view/1049</self-uri><abstract><p>С использованием спектроскопии комбинационного рассеяния света in situ установлен химический механизм растворения оксида гадолиния в расплаве GdCl3-KCl. Изменение нормированных интенсивностей колебательных полос использовано для определения кинетических параметров протекающей химической реакции. Установлено, что концентрация реагента — оксида гадолиния — уменьшается во времени по экспоненциальному закону, порядок реакции по Gd2O3 — первый. Показано, что введение в расплав оксида гадолиния в количестве, превышающем его растворимость, приводит к образованию твердой фазы оксихлорида гадолиния GdOCl.</p></abstract><trans-abstract xml:lang="en"><p>Using in situ Raman spectroscopy, the chemical mechanism of gadolinium oxide dissolution in the GdCl3-KCl melt is established. The changes in the normalized intensities of the vibrational bands is used to determine the kinetic parameters of the ongoing chemical reaction. It is established that the concentration of the reagent — gadolinium oxide — decreases with time according to an exponential law, the order of the reaction with respect to Gd2O3 is the first. It is shown that the introduction of gadolinium oxide into the melt in an amount exceeding its solubility leads to the formation of a solid phase of gadolinium oxychloride GdOCl.</p></trans-abstract><kwd-group xml:lang="ru"><kwd>спектроскопия комбинационного рассеяния света</kwd><kwd>кинетика растворения</kwd><kwd>оксид гадолиния</kwd><kwd>хлоридные расплавы</kwd><kwd>скорость и порядок реакции</kwd></kwd-group><kwd-group xml:lang="en"><kwd>Raman spectroscopy</kwd><kwd>dissolution kinetics</kwd><kwd>gadolinium oxide</kwd><kwd>chloride melts</kwd><kwd>reaction rate</kwd><kwd>reaction order</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">C. K. Gupta, N. Krishnamurthy. Extractive Metallurgy of Rare Earths, CRC PRESS (2005) 31—32</mixed-citation><mixed-citation xml:lang="en">C. K. Gupta, N. Krishnamurthy. 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