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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">10.32362/2410-6593-2024-19-4-337-349</article-id><article-id custom-type="edn" pub-id-type="custom">KPTKXT</article-id><article-id custom-type="elpub" pub-id-type="custom">chemicallytech-2125</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 ВЕЩЕСТВ</subject></subj-group></article-categories><title-group><article-title>Cold sintering of α- and γ-modifications of aluminum oxohydroxides: A low-temperature route to porous corundum ceramics</article-title><trans-title-group xml:lang="ru"><trans-title>Холодное спекание α- и γ-модификаций оксогидроксида алюминия: низкотемпературный способ получения пористой корундовой керамики</trans-title></trans-title-group></title-group><contrib-group><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0002-9627-2355</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Холодкова</surname><given-names>А. А.</given-names></name><name name-style="western" xml:lang="en"><surname>Kholodkova</surname><given-names>A. A.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Холодкова Анастасия Андреевна - к.х.н., старший научный сотрудник Управления координации научных исследований. Scopus Author ID 56530861400, Researcher ID M-2169-2016.</p><p>109542, Москва, Рязанский пр-т, д. 99</p></bio><bio xml:lang="en"><p>Anastasia A. Kholodkova - Cand. Sci. (Chem.), Senior Researcher, Department of Scientific Research Coordination, Scopus Author ID 56530861400, Researcher ID M-2169-2016.</p><p>99, Ryazansky pr., Moscow, 109545</p></bio><email xlink:type="simple">anastasia.kholodkova@gmail.com</email><xref ref-type="aff" rid="aff-1"/></contrib><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0001-6104-7716</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Корнюшин</surname><given-names>М. В.</given-names></name><name name-style="western" xml:lang="en"><surname>Kornyushin</surname><given-names>M. V.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Корнюшин Максим Витальевич - младший научный сотрудник, Управление координации научных исследований, Scopus Author ID 57219230569.</p><p>109542, Москва, Рязанский пр-т, д. 99</p></bio><bio xml:lang="en"><p>Maksim V. Kornyushin - Junior Researcher, Department of Scientific Research Coordination, Scopus Author ID 57219230569.</p><p>99, Ryazansky pr., Moscow, 109545</p></bio><email xlink:type="simple">maksim.korn0312@yandex.ru</email><xref ref-type="aff" rid="aff-1"/></contrib><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0002-4415-5747</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Смирнов</surname><given-names>А. В.</given-names></name><name name-style="western" xml:lang="en"><surname>Smirnov</surname><given-names>A. V.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Смирнов Андрей Владимирович - к.т.н., заведующий Лабораторией керамических материалов и технологий, ResearcherID J-2763-2017, Scopus Author ID 56970389000.</p><p>119571, Москва, пр-т Вернадского, д. 86</p></bio><bio xml:lang="en"><p>Andrey V. Smirnov - Cand. Sci. (Eng.), Head of the Laboratory of Ceramic Materials and Technologies, ResearcherID J-2763-2017, Scopus Author ID 56970389000.</p><p>86, Vernadskogo pr., Moscow, 119571</p></bio><email xlink:type="simple">smirnov_av@mirea.ru</email><xref ref-type="aff" rid="aff-2"/></contrib><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0009-0005-9813-8829</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Арбанас</surname><given-names>Л. А.</given-names></name><name name-style="western" xml:lang="en"><surname>Arbanas</surname><given-names>L. A.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Арбанас Левко Андреевич - стажер-исследователь, Лаборатория керамических материалов и технологий, Scopus Author ID 58523360800.</p><p>119571, Москва, пр-т Вернадского, д. 86</p></bio><bio xml:lang="en"><p>Levko A. Arbanas - Research Intern, Laboratory of Ceramic Materials and Technologies, Scopus Author ID 58523360800.</p><p>86, Vernadskogo pr., Moscow, 119571</p></bio><email xlink:type="simple">levko.147@icloud.com</email><xref ref-type="aff" rid="aff-2"/></contrib><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0002-5386-7850</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Хрусталев</surname><given-names>А. Н.</given-names></name><name name-style="western" xml:lang="en"><surname>Khrustalev</surname><given-names>A. N.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Хрусталев Арсений Николаевич - инженер, Лаборатория керамических материалов и технологий.</p><p>119571, Москва, пр-т Вернадского, д. 86</p></bio><bio xml:lang="en"><p>Arseniy N. Khrustalev - Engineer, Laboratory of Ceramic Materials and Technologies, RSCI SPIN-code 6804-4093.</p><p>86, Vernadskogo pr., Moscow, 119571</p></bio><email xlink:type="simple">lywn@yandex.ru</email><xref ref-type="aff" rid="aff-2"/></contrib><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0009-0000-8865-2828</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Базарова</surname><given-names>В. Е.</given-names></name><name name-style="western" xml:lang="en"><surname>Bazarova</surname><given-names>V. E.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Базарова Виктория Евгеньевна - инженер, Лаборатория керамических материалов и технологий.</p><p>119571, Москва, пр-т Вернадского, д. 86</p></bio><bio xml:lang="en"><p>Viktoria E. Bazarova - Engineer, Laboratory of Ceramic Materials and Technologies.</p><p>86, Vernadskogo pr., Moscow, 119571</p></bio><email xlink:type="simple">bazarovave@yandex.ru</email><xref ref-type="aff" rid="aff-2"/></contrib><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0002-0166-4912</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Шумянцев</surname><given-names>А. В.</given-names></name><name name-style="western" xml:lang="en"><surname>Shumyantsev</surname><given-names>A. V.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Шумянцев Алексей Викторович - к.х.н., научный сотрудник, Лаборатория катализа и газовой электрохимии кафедры физической химии, Химический факультет, ФГБОУ ВО «МГУ имени М.В. Ломоносова»; главный специалист подразделения, ФГБУН «ВИНТИ РАН» . Scopus Author ID 57193644084.</p><p>119991, Москва, Ленинские Горы, д. 1, стр. 9; 125190, Москва, ул. Усиевича, д. 20</p></bio><bio xml:lang="en"><p>Aleksey V. Shumyantsev - Cand. Sci. (Chem.), Researcher, Laboratory of Catalysis and Gas Electrochemistry, Chemistry Department, Lomonosov MSU; Chief Specialist of the Department, RISTI. Scopus Author ID 57193644084.</p><p>1-9, Leninskie Gory, Moscow, 119991; 20, Usievicha ul., Moscow, 125190</p></bio><email xlink:type="simple">alex-chim@mail.ru</email><xref ref-type="aff" rid="aff-3"/></contrib><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0003-3469-9406</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Купреенко</surname><given-names>С. Ю.</given-names></name><name name-style="western" xml:lang="en"><surname>Kupreenko</surname><given-names>S. Yu.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Купреенко Степан Юрьевич - к.ф.-м.н., старший научный сотрудник, Лаборатория катализа и газовой электрохимии кафедры физической химии, Химический факультет, Scopus Author ID 54784525900.</p><p>119991, Москва, Ленинские Горы, д. 1, стр. 9</p></bio><bio xml:lang="en"><p>Stepan Yu. Kupreenko - Cand. Sci. (Phys.-Math.), Senior Researcher, Laboratory of Catalysis and Gas Electrochemistry, Chemistry Department, Scopus Author ID 54784525900.</p><p>1-9, Leninskie Gory, Moscow, 119991</p></bio><email xlink:type="simple">kupreenko@physics.msu.ru</email><xref ref-type="aff" rid="aff-4"/></contrib><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0002-8416-3071</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Ивакин</surname><given-names>Ю. Д.</given-names></name><name name-style="western" xml:lang="en"><surname>Ivakin</surname><given-names>Yu. D.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Ивакин Юрий Дмитриевич - к.х.н., старший научный сотрудник, Лаборатория катализа и газовой электрохимии кафедры физической химии, Химический факультет, ФГБОУ ВО «МГУ имени М.В. Ломоносова»; старший научный сотрудник, Инжиниринговый центр мобильных решений, ФГБОУ ВО «МИРЭА – РТУ». Scopus Author ID 6603058433, SPIN-код РИНЦ 7337-4173.</p><p>119991, Москва, Ленинские Горы, д. 1, стр. 9; 119571, Москва, пр-т Вернадского, д. 86</p></bio><bio xml:lang="en"><p>Yurii D. Ivakin - Cand. Sci. (Chem.), Senior Researcher, Laboratory of Catalysis and Gas Electrochemistry, Chemistry Department, Lomonosov MSU; Senior Researcher, Mobile Solutions Engineering Center, MIREA – RTU. Scopus Author ID 6603058433, RSCI SPIN-code 7337-4173.</p><p>1-9, Leninskie Gory, Moscow, 119991; 86, Vernadskogo pr., Moscow, 119571</p></bio><email xlink:type="simple">ivakin@kge.msu.ru</email><xref ref-type="aff" rid="aff-5"/></contrib></contrib-group><aff-alternatives id="aff-1"><aff xml:lang="ru"><institution>Государственный университет управления</institution><country>Россия</country></aff><aff xml:lang="en"><institution>State University of Management</institution><country>Russian Federation</country></aff></aff-alternatives><aff-alternatives id="aff-2"><aff xml:lang="ru"><institution>МИРЭА – Российский технологический университет</institution><country>Россия</country></aff><aff xml:lang="en"><institution>MIREA – Russian Technological University</institution><country>Russian Federation</country></aff></aff-alternatives><aff-alternatives id="aff-3"><aff xml:lang="ru"><institution>Московский государственный университет им. М.В. Ломоносова; Всероссийский институт научной и технической информации, Российская академия наук</institution><country>Россия</country></aff><aff xml:lang="en"><institution>M.V. Lomonosov Moscow State University; All-Russian Institute for Scientific and Technical Information</institution><country>Russian Federation</country></aff></aff-alternatives><aff-alternatives id="aff-4"><aff xml:lang="ru"><institution>Московский государственный университет им. М.В. Ломоносова</institution><country>Россия</country></aff><aff xml:lang="en"><institution>M.V. Lomonosov Moscow State University</institution><country>Russian Federation</country></aff></aff-alternatives><aff-alternatives id="aff-5"><aff xml:lang="ru"><institution>Московский государственный университет им. М.В. Ломоносова; МИРЭА – Российский технологический университет</institution><country>Россия</country></aff><aff xml:lang="en"><institution>M.V. Lomonosov Moscow State University; MIREA – Russian Technological University</institution><country>Russian Federation</country></aff></aff-alternatives><pub-date pub-type="collection"><year>2024</year></pub-date><pub-date pub-type="epub"><day>12</day><month>09</month><year>2024</year></pub-date><volume>19</volume><issue>4</issue><fpage>337</fpage><lpage>349</lpage><permissions><copyright-statement>Copyright &amp;#x00A9; Kholodkova A.A., Kornyushin M.V., Smirnov A.V., Arbanas L.A., Khrustalev A.N., Bazarova V.E., Shumyantsev A.V., Kupreenko S.Y., Ivakin Y.D., 2024</copyright-statement><copyright-year>2024</copyright-year><copyright-holder xml:lang="ru">Холодкова А.А., Корнюшин М.В., Смирнов А.В., Арбанас Л.А., Хрусталев А.Н., Базарова В.Е., Шумянцев А.В., Купреенко С.Ю., Ивакин Ю.Д.</copyright-holder><copyright-holder xml:lang="en">Kholodkova A.A., Kornyushin M.V., Smirnov A.V., Arbanas L.A., Khrustalev A.N., Bazarova V.E., Shumyantsev A.V., Kupreenko S.Y., Ivakin Y.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://www.finechem-mirea.ru/jour/article/view/2125">https://www.finechem-mirea.ru/jour/article/view/2125</self-uri><abstract><sec><title>Objectives</title><p>Objectives. To obtain porous corundum ceramics using an innovative cold sintering process starting from different phase modifications of aluminum oxohydroxide — boehmite γ-AlOOH and diaspore α-AlOOH; to study the phase and structural properties of the resulting materials; and to assess their permeability to water.</p></sec><sec><title>Results</title><p>Results. Cold sintering enables the formation of single-phase corundum ceramics with an open porosity of 47.9% directly from the initial boehmite powder with the addition of 5 wt % corundum in the presence of 20 wt % water at a temperature of 450°C, mechanical pressure of 220 MPa, and isothermal exposure for 30 min. Under the same conditions of cold sintering, a mixture of diaspore and boehmite was transformed into α-AlOOH ceramics. This then turned into corundum with an open porosity of 39% when calcined in air at 600°C for 1 h. The resulting materials had permeability for pure water above 5000 L/(m2∙h∙bar).</p></sec><sec><title>Conclusions</title><p>Conclusions. Cold sintering is a promising approach to producing porous corundum ceramics which can be used in filtration systems. Compared to traditional ceramic technology, the new approach reduces energy, time, and labor costs in the material manufacturing. It also eliminates the need to use auxiliary substances (binders, pore-forming agents, etc.).</p></sec></abstract><trans-abstract xml:lang="ru"><sec><title>Цели</title><p>Цели. Получить пористую корундовую керамику с помощью инновационного метода холодного спекания с использованием различных фазовых модификаций оксогидроксида алюминия — бемита γ-AlOOH и диаспора α-AlOOH, изучить фазовые и структурные свойства полученных материалов и оценить их проницаемость для воды.</p></sec><sec><title>Результаты</title><p>Результаты. С помощью холодного спекания в присутствии 20 мас. % воды при температуре 450°С, механическом давлении 220 МПа и изотермической выдержке 30 мин из исходного порошка бемита с добавлением 5 мас. % корунда была изготовлена однофазная корундовая керамика с открытой пористостью 47.9%. При таких же условиях холодного спекания смесь диаспора и бемита превратилась в керамику α-AlOOH, которая при прокаливании на воздухе при 600°С в течение 1 ч перешла в корунд с открытой пористостью 39%. Полученные материалы обладали проницаемостью для чистой воды более 5000 л/(м2∙ч∙бар).</p></sec><sec><title>Выводы</title><p>Выводы. Холодное спекание является перспективным методом для изготовления пористой корундовой керамики, которая может быть использована в системах фильтрации. По сравнению с традиционной керамической технологией новый подход снижает энергетические, временные и трудозатраты при изготовлении материала, а также исключает необходимость в использовании вспомогательных веществ (связующих, порообразующих агентов и пр.).</p></sec></trans-abstract><kwd-group xml:lang="ru"><kwd>холодное спекание</kwd><kwd>оксид алюминия</kwd><kwd>оксогидроксид алюминия</kwd><kwd>корунд</kwd><kwd>бемит</kwd><kwd>диаспор</kwd><kwd>пористая проницаемая керамика</kwd></kwd-group><kwd-group xml:lang="en"><kwd>cold sintering</kwd><kwd>aluminum oxide</kwd><kwd>aluminum oxohydroxide</kwd><kwd>corundum</kwd><kwd>boehmite</kwd><kwd>diaspore</kwd><kwd>porous permeable ceramics</kwd></kwd-group><funding-group><funding-statement xml:lang="ru">Работа выполнена при поддержке Российского научного фонда, грант № 22-73-00318</funding-statement><funding-statement xml:lang="en">The research was supported by the Russian Science Foundation, grant No. 22-73-00318</funding-statement></funding-group></article-meta></front><back><ref-list><title>References</title><ref id="cit1"><label>1</label><citation-alternatives><mixed-citation xml:lang="ru">Amrute A.P., Jeske K., Łodziana Z., Prieto G., Schüth F. 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