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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="other" dtd-version="1.2" xml:lang="en"><front><journal-meta><journal-id journal-id-type="publisher-id">Melts</journal-id><journal-title-group><journal-title xml:lang="en">Melts</journal-title><trans-title-group xml:lang="ru"><trans-title>Расплавы</trans-title></trans-title-group></journal-title-group><issn publication-format="print">0235-0106</issn><issn publication-format="electronic">3034-5715</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">661300</article-id><article-id pub-id-type="doi">10.31857/S0235010623030027</article-id><article-id pub-id-type="edn">PRRQTA</article-id><article-categories><subj-group subj-group-type="toc-heading" xml:lang="en"><subject>Articles</subject></subj-group><subj-group subj-group-type="toc-heading" xml:lang="ru"><subject>Статьи</subject></subj-group><subj-group subj-group-type="article-type"><subject></subject></subj-group></article-categories><title-group><article-title xml:lang="en">THE THERMAL CONDUCTIVITY OF MOLTEN MIXTURES OF СeCl<sub>3</sub>–MCl (M = Li, Na, K, Cs) SYSTEMS</article-title><trans-title-group xml:lang="ru"><trans-title>Теплопроводность расплавленных смесей системы СeCl<sub>3</sub>–MCl (M = Li, Na, K, Cs)</trans-title></trans-title-group></title-group><contrib-group><contrib contrib-type="author"><name-alternatives><name xml:lang="en"><surname>Bobrova</surname><given-names>K. O.</given-names></name><name xml:lang="ru"><surname>Боброва</surname><given-names>К. О.</given-names></name></name-alternatives><email>ksuybobrova@gmail.com</email><xref ref-type="aff" rid="aff1"/></contrib><contrib contrib-type="author"><name-alternatives><name xml:lang="en"><surname>Dokytovich</surname><given-names>V. N.</given-names></name><name xml:lang="ru"><surname>Докутович</surname><given-names>В. Н.</given-names></name></name-alternatives><email>ksuybobrova@gmail.com</email><xref ref-type="aff" rid="aff1"/></contrib></contrib-group><aff-alternatives id="aff1"><aff><institution xml:lang="en">Institute of High Temperature Electrochemistry of the UB RAS</institution></aff><aff><institution xml:lang="ru">Институт высокотемпературной электрохимии УрО РАН</institution></aff></aff-alternatives><pub-date date-type="pub" iso-8601-date="2023-05-01" publication-format="electronic"><day>01</day><month>05</month><year>2023</year></pub-date><issue>3</issue><fpage>287</fpage><lpage>297</lpage><history><date date-type="received" iso-8601-date="2025-02-25"><day>25</day><month>02</month><year>2025</year></date></history><permissions><copyright-statement xml:lang="en">Copyright ©; 2023, К.О. Боброва, В.Н. Докутович</copyright-statement><copyright-statement xml:lang="ru">Copyright ©; 2023, К.О. Боброва, В.Н. Докутович</copyright-statement><copyright-year>2023</copyright-year><copyright-holder xml:lang="en">К.О. Боброва, В.Н. Докутович</copyright-holder><copyright-holder xml:lang="ru">К.О. Боброва, В.Н. Докутович</copyright-holder></permissions><self-uri xlink:href="https://journals.eco-vector.com/0235-0106/article/view/661300">https://journals.eco-vector.com/0235-0106/article/view/661300</self-uri><abstract xml:lang="en"><p id="idm45181323710496">The paper presents experimental data on the thermal conductivity of molten salt mixtures СeCl<sub>3</sub>–MCl, where M = Li, Na, K, Cs. The concentration of cerium trichloride varies from 0.25 to 0.75 mole percent in 0.25 increments. The initial salts of alkali metal chlorides were certified by DSC. The obtained values of melting temperatures are in good agreement with the literature data. Anhydrous cerium trichloride was obtained from cerium(IV) oxide in 2 stages: preparation of cerium crystalline hydrate and removal of water of crystallization. The measurements were carried out by the stationary method of coaxial cylinders in a nickel device in the temperature range individually selected for each composition. The relative measurement error does not exceed 5%. In this work, the convective and radiative contributions to heat transfer were estimated. The value of the product of Prandtl and Grashof numbers is less than 1000, which confirms the absence of convection. The calculated radiative contribution to heat transfer does not exceed 2.4%. The thermal conductivity of all investigated melts increases with increasing temperature. The concentration dependences of molten mixtures of cerium and alkali metal chlorides were obtained. The thermal conductivity decreases upon passing from Li to Cs, which is due to an increase in the radius of the alkali metal cation and, as a consequence, an increase in the interionic distance.</p></abstract><trans-abstract xml:lang="ru"><p id="idm45181323710112">В работе представлены экспериментальные данные по теплопроводности расплавленных солевых смесей СeCl<sub>3</sub>–MCl, где M = Li, Na, K, Cs. Концентрация трихлорида церия варьируется от 0.25 к 0.75 мольных процентов с шагом 0.25. Исходные соли хлоридов щелочных металлов были аттестованы методом ДСК. Полученные значения температур плавления хорошо согласуются с литературными данными. Безводный трихлорид церия был получен из оксида церия(IV) в 2 этапа: получение кристаллогидрата церия и удаление кристаллизационной воды. Измерения проведены стационарным методом коаксиальных цилиндров в никелевом приборе в интервале температур, индивидуально подобранных для каждого состава. Относительная погрешность измерения не превышает 5%. В работе были оценены конвективный и радиационный вклады в теплоперенос. Значение произведения Прандтля и Грасгофа меньше 1000, что подтверждает отсутствие конвекции. Рассчитанный радиационный вклад в перенос тепла не превышает 2.4%. Теплопроводность всех исследованных расплавов растет с увеличением температуры. Были получены концентрационные зависимости расплавленных смесей хлоридов церия и щелочных металлов. Теплопроводность уменьшается при переходе от Li к Cs, что обусловлено ростом радиуса катиона щелочного металла и, как следствие, ростом межионного расстояния.</p></trans-abstract><kwd-group xml:lang="en"><kwd>thermal conductivity</kwd><kwd>cerium trichloride</kwd><kwd>alkali metal chloride</kwd><kwd>molten salt</kwd><kwd>coaxial cylinder method</kwd><kwd>heat transfer</kwd></kwd-group><kwd-group xml:lang="ru"><kwd>теплопроводность</kwd><kwd>трихлорид церия</kwd><kwd>хлорид щелочного металла</kwd><kwd>расплавленная соль</kwd><kwd>метод коаксиальных цилиндров</kwd><kwd>перенос тепла</kwd></kwd-group></article-meta></front><body></body><back><ref-list><ref id="B1"><label>1.</label><citation-alternatives><mixed-citation xml:lang="en">1. Komarov V.Ye., Smolenskiy V.V., Afonichkin V.K. Perspektivy ispol’zovaniya rasplavlennykh soley v radiokhimicheskikh tekhnologiyakh [Prospects for the use of molten salts in radiochemical technologies] // Rasplavy. 2000. № 2. Р. 59–65. 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