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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">powder</journal-id><journal-title-group><journal-title xml:lang="ru">Известия вузов. Порошковая металлургия и функциональные покрытия</journal-title><trans-title-group xml:lang="en"><trans-title>Powder Metallurgy аnd Functional Coatings (Izvestiya Vuzov. Poroshkovaya Metallurgiya i Funktsional'nye Pokrytiya)</trans-title></trans-title-group></journal-title-group><issn pub-type="ppub">1997-308X</issn><issn pub-type="epub">2412-8767</issn><publisher><publisher-name>НИТУ "МИСИС"</publisher-name></publisher></journal-meta><article-meta><article-id pub-id-type="doi">10.17073/1997-308X-2026-2-6-15</article-id><article-id custom-type="elpub" pub-id-type="custom">powder-1119</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>Процессы получения и свойства порошков</subject></subj-group><subj-group subj-group-type="section-heading" xml:lang="en"><subject>Production Processes and Properties of Powders</subject></subj-group></article-categories><title-group><article-title>Влияние способа синтеза на свойства оксида алюминия, стабилизированного оксидом лантана</article-title><trans-title-group xml:lang="en"><trans-title>Effect of the synthesis method on the properties of lanthanum oxide-stabilized aluminum oxide</trans-title></trans-title-group></title-group><contrib-group><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0003-3303-8518</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Солодовникова</surname><given-names>П. А.</given-names></name><name name-style="western" xml:lang="en"><surname>Solodovnikova</surname><given-names>P. A.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Полина Александровна Солодовникова – аспирант, инженер-исследователь кафедры редких металлов и наноматериалов </p><p> Россия, 620002, г. Екатеринбург, ул. Мира, 19</p></bio><bio xml:lang="en"><p>Polina A. Solodovnikova – Postgraduate Student, Research Engineer, Department of Rare Metals and Nanomaterials</p><p>19 Mira Str., Ekaterinburg 620002, Russia</p></bio><email xlink:type="simple">solly.polly@yandex.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>Рычков</surname><given-names>В. Н.</given-names></name><name name-style="western" xml:lang="en"><surname>Rychkov</surname><given-names>V. N.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Владимир Николаевич Рычков – д.х.н., профессор кафедры редких металлов и наноматериалов</p><p> Россия, 620002, г. Екатеринбург, ул. Мира, 19</p></bio><bio xml:lang="en"><p>Vladimir N. Rychkov – Dr. Sci. (Chem.), Professor, Department of Rare Metals and Nanomaterials</p><p>19 Mira Str., Ekaterinburg 620002, Russia</p></bio><email xlink:type="simple">v.n.rychkov@urfu.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/0009-0007-3975-4263</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Смолин</surname><given-names>М. А.</given-names></name><name name-style="western" xml:lang="en"><surname>Smolin</surname><given-names>M. A.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Михаил Александрович Смолин – студент кафедры редких металлов и наноматериалов</p><p> Россия, 620002, г. Екатеринбург, ул. Мира, 19</p></bio><bio xml:lang="en"><p>Mikhail A. Smolin – Student, Department of Rare Metals and Nanomaterials</p><p>19 Mira Str., Ekaterinburg 620002, Russia</p></bio><email xlink:type="simple">smolin.mikhail78@gmail.com</email><xref ref-type="aff" rid="aff-1"/></contrib></contrib-group><aff-alternatives id="aff-1"><aff xml:lang="ru"><institution>Уральский федеральный университет им. первого президента России Б.Н. Ельцина</institution><country>Россия</country></aff><aff xml:lang="en"><institution>Ural Federal University named after the First President of Russia B.N. Yeltsin</institution><country>Russian Federation</country></aff></aff-alternatives><pub-date pub-type="collection"><year>2026</year></pub-date><pub-date pub-type="epub"><day>05</day><month>07</month><year>2026</year></pub-date><volume>20</volume><issue>2</issue><fpage>6</fpage><lpage>15</lpage><permissions><copyright-statement>Copyright &amp;#x00A9; НИТУ "МИСИС", 2026</copyright-statement><copyright-year>2026</copyright-year><copyright-holder xml:lang="ru">НИТУ "МИСИС"</copyright-holder><copyright-holder xml:lang="en">НИТУ "МИСИС"</copyright-holder><license xlink:href="https://powder.misis.ru/jour/about/submissions#copyrightNotice" xlink:type="simple"><license-p>https://powder.misis.ru/jour/about/submissions#copyrightNotice</license-p></license></permissions><self-uri xlink:href="https://powder.misis.ru/jour/article/view/1119">https://powder.misis.ru/jour/article/view/1119</self-uri><abstract><p>Оксид алюминия широко применяется в промышленности, в том числе в составе трехмаршрутных катализаторов в качестве материала-носителя благородных металлов на своей поверхности. В связи с этим данный материал должен обладать развитой поверхностью, быть высокопористым и оставаться работоспособным при температуре эксплуатации трехмаршрутного катализатора (вплоть до 1100 °С), т.е. характеризоваться термостабильностью. Эффективным способом повышения этих свойств является введение модифицирующей добавки в виде оксида лантана. Проведено сравнение поверхности и термостабильности образцов оксида алюминия, содержащих 3 мас. % оксида лантана в пересчете на смешанный конечный оксид, полученных различными методами: механическим смешением оксидов алюминия и лантана; прямым, обратным и так называемым «быстрым» совместным осаждением гидроксидов алюминия и лантана; способами пропитки гидроксида алюминия нитратом лантана (по влагоемкости и в избытке растворителя), а также совместным контролируемым двухструйным осаждением гидроксидов алюминия и лантана. Описано влияние метода синтеза на характеристики получаемого материала. Уже на стадии синтеза полученные ксерогели отличались по форме и размерам частиц, что в итоге привело к формированию различных показателей поверхности и пористости оксида алюминия. Наиболее высокие значения удельной поверхности имеет образец, полученный методом контролируемого двухструйного осаждения. Такой материал может быть использован в составе трехмаршрутных катализаторов.</p></abstract><trans-abstract xml:lang="en"><p>Aluminum oxide is widely used in industry, including as a support for precious metals in three-way catalysts. For this application, the material should have a well-developed surface and high porosity and should withstand three-way catalyst operating temperatures of up to 1100 °C, i.e., it should be thermally stable. An effective way to improve these properties is to introduce lanthanum oxide as a modifying additive. This article compares the surface characteristics and thermal stability of aluminum oxide samples containing 3 wt. % lanthanum oxide, calculated relative to the final mixed oxide. The samples were prepared by different methods: mechanical mixing of aluminum and lanthanum oxides; direct, reverse, and so-called fast precipitation of aluminum and lanthanum hydroxides; incipient wetness impregnation and impregnation in excess solvent of aluminum hydroxide with lanthanum nitrate; by capacity and, and controlled double-jet coprecipitation of aluminum and lanthanum hydroxides. The article examines how the synthesis method affects the characteristics of the resulting material. The samples differed already at the synthesis stage in particle shapes and size , which ultimately led to differences in surface characteristics and porosity. Among the selected precipitation methods, the sample obtained by controlled double-jet coprecipitation had the highest specific surface area. This material can be used in three-way catalysts.</p></trans-abstract><kwd-group xml:lang="ru"><kwd>оксид алюминия</kwd><kwd>оксид лантана</kwd><kwd>термостабильность</kwd><kwd>удельная поверхность</kwd><kwd>трехмаршрутные катализаторы</kwd><kwd>автомобильные катализаторы</kwd></kwd-group><kwd-group xml:lang="en"><kwd>aluminum oxide</kwd><kwd>lanthanum oxide</kwd><kwd>thermal stability</kwd><kwd>specific surface area</kwd><kwd>porosity</kwd><kwd>controlled double-jet precipitation</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">ГОСТ Р 41.83-99 (Правила ЕЭК ООН № 83). Единообразные предписания, касающиеся официального утверждения транспортных средств в отношении вы­б­росов загрязняющих веществ в зависимости от топлива, необходимого для двигателей. М.: Госстандарт России, 1999. 133 с.</mixed-citation><mixed-citation xml:lang="en">GOST R 41.83-99 (UNECE Regulation No. 83). 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