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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 custom-type="elpub" pub-id-type="custom">chemicallytech-254</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>Hydroxide and oxide of germanium(IV): synthesis and chemical-physical properties</article-title><trans-title-group xml:lang="ru"><trans-title>Гидроксид и оксид германия(IV): метод синтеза и физико-химические свойства</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>Никишина</surname><given-names>Е. Е.</given-names></name><name name-style="western" xml:lang="en"><surname>Nikisihina</surname><given-names>E. E.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Кафедра химии и технологии редких и рассеянных элементов, наноразмерных и композиционных материалов им. К.А. Большакова, доцент</p></bio><email xlink:type="simple">helena_nick@mail.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>Кафедра химии и технологии редких и рассеянных элементов, наноразмерных и композиционных материалов им. К.А. Большакова, старший научный сотрудник</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>Пилецкий</surname><given-names>А. В.</given-names></name><name name-style="western" xml:lang="en"><surname>Piletsky</surname><given-names>A. V.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Кафедра химии и технологии редких и рассеянных элементов, наноразмерных и композиционных материалов им. К.А. Большакова, студент</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>Кафедра химии и технологии редких и рассеянных элементов, наноразмерных и композиционных материалов им. К.А. Большакова, заведующий кафедрой</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>МИТХТ им. М.В. Ломоносова, 119571, Москва, пр-т Вернадского, д. 86</institution><country>Россия</country></aff><aff xml:lang="en"><institution>M.V. Lomonosov Moscow State University of Fine Chemical Technologies, 86, Vernadskogo pr., Moscow 119571</institution><country>Russian Federation</country></aff></aff-alternatives><pub-date pub-type="collection"><year>2015</year></pub-date><pub-date pub-type="epub"><day>28</day><month>10</month><year>2015</year></pub-date><volume>10</volume><issue>5</issue><fpage>19</fpage><lpage>26</lpage><permissions><copyright-statement>Copyright &amp;#x00A9; Nikisihina E.E., Lebedeva E.N., Piletsky A.V., Drobot D.V., 2015</copyright-statement><copyright-year>2015</copyright-year><copyright-holder xml:lang="ru">Никишина Е.Е., Лебедева Е.Н., Пилецкий А.В., Дробот Д.В.</copyright-holder><copyright-holder xml:lang="en">Nikisihina E.E., Lebedeva E.N., Piletsky A.V., 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/254">https://www.finechem-mirea.ru/jour/article/view/254</self-uri><abstract><p>Our work is focused on a development of physical-chemical backgrounds and methods of controlled synthesis of germanium hydroxide GeO(OH)2, which is a precursor for the synthesis of functional materials based on germanium oxide. The method of controlled synthesis of germanium hydroxide by heterophase interaction ammonia solution with germanium tetraiodide was elaborated. It yields hydroxide with relatively low water content (~ 14 wt. %), which can be easily filtrated. The average germanium dioxide content is as higher as 86 wt.%. Physical-chemical properties of germanium hydroxide and products of thermal decomposition have been investigated by using of chemical and thermal analysis, gravimetric analysis, XRDA, IR-spectroscopy.</p></abstract><trans-abstract xml:lang="ru"><p>Предложен вариант метода получения гидроксида германия(IV), сочетающий достоинства гетерофазного метода синтеза и использование в качестве предшественника иодида германия GeI4. Представлены результаты изучения физико-химических свойств гидроксида германия GeO(OH)2 - исходного соединения для синтеза функциональных материалов на основе диоксида германия.</p></trans-abstract><kwd-group xml:lang="ru"><kwd>германий</kwd><kwd>гидроксид</kwd><kwd>диоксид</kwd><kwd>термическое разложение</kwd><kwd>полиморфные превращения</kwd><kwd>плотность</kwd><kwd>размер частиц.</kwd></kwd-group><kwd-group xml:lang="en"><kwd>hydroxide</kwd><kwd>dioxide</kwd><kwd>germanium</kwd><kwd>thermal decomposition</kwd><kwd>polymorphous transformations</kwd><kwd>density</kwd><kwd>grain size</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">Naumov A.V. // Rus. J. Non-Ferrous Metals. 2007. V. 48. № 4. P. 265-272.</mixed-citation><mixed-citation xml:lang="en">Naumov A.V. // Rus. J. Non-Ferrous Metals. 2007. V. 48. № 4. 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