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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="en"><front><journal-meta><journal-id journal-id-type="publisher-id">chemicallytech</journal-id><journal-title-group><journal-title xml:lang="en">Fine Chemical Technologies</journal-title><trans-title-group xml:lang="ru"><trans-title>Тонкие химические технологии</trans-title></trans-title-group></journal-title-group><issn pub-type="ppub">2410-6593</issn><issn pub-type="epub">2686-7575</issn><publisher><publisher-name>MIREA – Russian Technological University (RTU MIREA).</publisher-name></publisher></journal-meta><article-meta><article-id pub-id-type="doi">10.32362/2410-6593-2018-13-5-30-37</article-id><article-id custom-type="elpub" pub-id-type="custom">chemicallytech-167</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="en"><subject>CHEMISTRY AND TECHNOLOGY OF INORGANIC MATERIALS</subject></subj-group><subj-group subj-group-type="section-heading" xml:lang="ru"><subject>ХИМИЯ И ТЕХНОЛОГИЯ НЕОРГАНИЧЕСКИХ МАТЕРИАЛОВ</subject></subj-group></article-categories><title-group><article-title>ZIRCONIUM AND HAFNIUM DIOXIDES DOPED BY OXIDES OF YTTRIUM, SCANDIUM AND ERBIUM: NEW METHODS OF SYNTHESIS AND PROPERTIES</article-title><trans-title-group xml:lang="ru"><trans-title>ДИОКСИДЫ ЦИРКОНИЯ И ГАФНИЯ, СТАБИЛИЗИРОВАННЫЕ ОКСИДАМИ РЕДКОЗЕМЕЛЬНЫХ ЭЛЕМЕНТОВ (Y, Sc, Er): НОВЫЕ МЕТОДЫ СИНТЕЗА И СВОЙСТВА</trans-title></trans-title-group></title-group><contrib-group><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0003-3579-2194</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Никишина</surname><given-names>Е. Е.</given-names></name><name name-style="western" xml:lang="en"><surname>Nikishina</surname><given-names>E. E.</given-names></name></name-alternatives><bio xml:lang="ru"><p>кандидат химических наук, доцент кафедры химии и технологии редких и рассеянных элементов, наноразмерных и композиционных материалов им. К.А. Большакова</p><p>119571, Россия, Москва, пр-т Вернадского, д. 86</p><p>Researcher ID О-7115-2014</p></bio><bio xml:lang="en"><p>Ph.D. (Chemistry), Associate Professor, , K.A. Bolshakov Chair of Chemistry and Technology of Rare and Scattered Elements, Nanoscale and Composite Materials</p><p>86, Vernadskogo Pr., Moscow 119571, Russia</p><p>ResearcherID О-7115-2014</p></bio><email xlink:type="simple">nikishina@mirea.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>Лебедева</surname><given-names>Е. Н.</given-names></name><name name-style="western" xml:lang="en"><surname>Lebedeva</surname><given-names>E. N.</given-names></name></name-alternatives><bio xml:lang="ru"><p>кандидат химических наук, инженер кафедры химии и технологии редких и рассеянных элементов, наноразмерных и композиционных материалов им. К.А. Большакова</p><p>119571, Россия, Москва, пр-т Вернадского, д. 86</p></bio><bio xml:lang="en"><p>Ph.D. (Chemistry), Engineer, K.A. Bolshakov Chair of Chemistry and Technology of Rare and Scattered Elements, Nanoscale and Composite Materials</p><p>86, Vernadskogo Pr., Moscow 119571, Russia</p></bio><email xlink:type="simple">noemail@neicon.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>Дробот</surname><given-names>Д. В.</given-names></name><name name-style="western" xml:lang="en"><surname>Drobot</surname><given-names>D. V.</given-names></name></name-alternatives><bio xml:lang="ru"><p>доктор химических наук, профессор кафедры химии и технологии редких и рассеянных элементов, наноразмерных и композиционных материалов им. К.А. Большакова</p><p>119571, Россия, Москва, пр-т Вернадского, д. 86</p></bio><bio xml:lang="en"><p>D.Sc. (Chemistry), Professor, K.A. Bolshakov Chair of Chemistry and Technology of Rare and Scattered Elements, Nanoscale and Composite Materials</p><p>86, Vernadskogo Pr., Moscow 119571, Russia</p></bio><email xlink:type="simple">noemail@neicon.ru</email><xref ref-type="aff" rid="aff-1"/></contrib></contrib-group><aff-alternatives id="aff-1"><aff xml:lang="ru"><institution>МИРЭА - Российский технологический университет (Институт тонких химических технологий имени М.В. Ломоносова)</institution><country>Россия</country></aff><aff xml:lang="en"><institution>MIREA - Russian Technological University (M.V. Lomonosov Institute of Fine Chemical Technologies)</institution><country>Russian Federation</country></aff></aff-alternatives><pub-date pub-type="collection"><year>2018</year></pub-date><pub-date pub-type="epub"><day>28</day><month>10</month><year>2018</year></pub-date><volume>13</volume><issue>5</issue><fpage>30</fpage><lpage>37</lpage><permissions><copyright-statement>Copyright &amp;#x00A9; Nikishina E.E., Lebedeva E.N., Drobot D.V., 2018</copyright-statement><copyright-year>2018</copyright-year><copyright-holder xml:lang="ru">Никишина Е.Е., Лебедева Е.Н., Дробот Д.В.</copyright-holder><copyright-holder xml:lang="en">Nikishina E.E., Lebedeva E.N., Drobot D.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.finechem-mirea.ru/jour/article/view/167">https://www.finechem-mirea.ru/jour/article/view/167</self-uri><abstract><p>The results of elaborating a method for the synthesis of zirconia and hafnia doped by rare earths (yttrium, erbium and scandium) by using low-hydrated hydroxides of zirconium and hafnium as precursors are reported. The low-hydrated zirconium and hafnium hydroxides were prepared using the heterophase reaction. The physicochemical properties (including sorption properties) of low-hydrated zirconium and hafnium hydroxides ZrxHf1-x(OH)3÷1O0.5÷1.5·0.9÷2.9H2Owere studied. The scheme of thermal decomposition of low-hydrated hydroxides in air was determined. The sorption properties of the low-hydrated hafnium hydroxide are less pronounced owing to the lower amount of sorption centers, in this case, hydroxo and aqua groups. The sequence of stages of thermal decomposition of rare earth acetates was elucidated. Single-phase zirconia and hafnia doped by rare earths (yttrium, erbium and scandium) were obtained. The parameters of the elementary lattice were calculated for each phase. It was established that the stabilization of zirconium dioxide with yttria leads to the formation of interstitial solid solutions based on tetragonal zirconia (in the case of the composition Y2O3×4ZrO2 - cubic modification), with erbium oxide - interstitial solid solutions based on cubic zirconia; with scandium oxide - solid solutions based on tetragonal zirconia. The article presents the results of measuring electrical conductivity.</p></abstract><trans-abstract xml:lang="ru"><p>В статье представлен разработанный метод синтеза диоксидов циркония и гафния, легированных редкоземельными элементами (иттрием, эрбием и скандием), с использованием в качестве предшественников индивидуальных и биметаллических маловодных гидроксидов (МВГ) циркония и/или гафния общего состава ZrxHf1-x(OH)3÷1O0.5÷1.5∙0.9÷2.9H2O, 0≤х≤1, а также ацетатов редкоземельных элементов. В свою очередь, МВГ циркония и/или гафния получали гетерофазным взаимодействием оксихлоридов металлов с концентрированным раствором аммиака. Изучены физико-химические свойства маловодных гидроксидов. Показано, что при нагревании до температуры 1200 °С в случае термолиза индивидуальных МВГ образуются моноклинные модификации соответствующих диоксидов, а при термолизе биметаллического МВГ - твердые растворы замещения состава ZrxHf1-xO2 (0≤х≤1) моноклинной модификации. Установлена последовательность стадий термического разложения ацетатов иттрия, скандия и эрбия с образованием оксидов. Получены дикосиды циркония и гафния, стабилизированные оксидами редкоземельных элементов, следующих составов: Y2O3∙4ZrO2, Y2O3∙16ZrO2, Y2O3∙20ZrO2, Y2O3∙4HfO2, Y2O3∙6HfO2, Y2O3∙9HfO2, Y2O3∙18HfO2, Er2O3∙27ZrO2, Er2O3∙35ZrO2, Sc2O3∙10ZrO2, Sc2O3∙13ZrO2. Для каждой фазы рассчитаны параметры элементарной решетки. Установлено, что при стабилизации диоксида циркония оксидом иттрия образуются твердые растворы внедрения на основе ZrO2 тетрагональной модификации (в случае состава Y2O3∙4ZrO2 - кубической модификации), оксидом эрбия - твердые растворы внедрения на основе диоксида циркония кубической модификации; оксидом скандия - твердые растворы на основе диоксида циркония тетрагональной модификации. В статье представлены результаты измерения электропроводности.</p></trans-abstract><kwd-group xml:lang="ru"><kwd>цирконий</kwd><kwd>гафний</kwd><kwd>редкоземельные элементы</kwd><kwd>маловодный гидроксид</kwd><kwd>сорбция</kwd><kwd>легирование</kwd><kwd>термическое разложение</kwd></kwd-group><kwd-group xml:lang="en"><kwd>zirconium</kwd><kwd>hafnium</kwd><kwd>rare-earths</kwd><kwd>low-hydrated hydroxide</kwd><kwd>sorption</kwd><kwd>doping</kwd><kwd>thermal decomposition</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">Simoncic P., Navrotsky A. Systematics of phase transition and mixing energetics in rare earth, yttrium, and scandium stabilized zirconia and hafnia // J. Amer. Cer. Soc. 2007. V. 90. № 7. P. 2143-2150.</mixed-citation><mixed-citation xml:lang="en">Simoncic P., Navrotsky A. 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