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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="research-article" dtd-version="1.2" xml:lang="en"><front><journal-meta><journal-id journal-id-type="publisher-id">Theoretical Foundations of Chemical Engineering</journal-id><journal-title-group><journal-title xml:lang="en">Theoretical Foundations of Chemical Engineering</journal-title><trans-title-group xml:lang="ru"><trans-title>Теоретические основы химической технологии</trans-title></trans-title-group></journal-title-group><issn publication-format="print">0040-3571</issn><issn publication-format="electronic">3034-6053</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">686515</article-id><article-id pub-id-type="doi">10.31857/S0040357125010083</article-id><article-id pub-id-type="edn">txxgbs</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>Research Article</subject></subj-group></article-categories><title-group><article-title xml:lang="en">Ethane dehydrogenation in a membrane reactor with palladium alloy foil Pd–Ru with alumina-chromium catalyst at high temperatures</article-title><trans-title-group xml:lang="ru"><trans-title>Дегидрирование этана в мембранном реакторе с фольгой из палладиевого сплава Pd–Ru с алюмо-хромовым катализатором при высоких температурах</trans-title></trans-title-group></title-group><contrib-group><contrib contrib-type="author"><name-alternatives><name xml:lang="en"><surname>Babak</surname><given-names>V. N.</given-names></name><name xml:lang="ru"><surname>Бабак</surname><given-names>В. Н.</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><email>tabor47@mail.ru</email><xref ref-type="aff" rid="aff1"/></contrib><contrib contrib-type="author"><name-alternatives><name xml:lang="en"><surname>Didenko</surname><given-names>L. P.</given-names></name><name xml:lang="ru"><surname>Диденко</surname><given-names>Л. П.</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><email>tabor47@mail.ru</email><xref ref-type="aff" rid="aff1"/></contrib><contrib contrib-type="author"><name-alternatives><name xml:lang="en"><surname>Sementsova</surname><given-names>L. A.</given-names></name><name xml:lang="ru"><surname>Семенцова</surname><given-names>Л. А.</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><email>tabor47@mail.ru</email><xref ref-type="aff" rid="aff1"/></contrib><contrib contrib-type="author"><name-alternatives><name xml:lang="en"><surname>Kvurt</surname><given-names>Yu. P.</given-names></name><name xml:lang="ru"><surname>Квурт</surname><given-names>Ю. П.</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><email>tabor47@mail.ru</email><xref ref-type="aff" rid="aff1"/></contrib><contrib contrib-type="author"><name-alternatives><name xml:lang="en"><surname>Zakiev</surname><given-names>S. Е.</given-names></name><name xml:lang="ru"><surname>Закиев</surname><given-names>С. Е.</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><email>tabor47@mail.ru</email><xref ref-type="aff" rid="aff1"/></contrib></contrib-group><aff-alternatives id="aff1"><aff><institution xml:lang="en">Federal Research Center of Problems of Chemical Physics and Medicinal Chemistry of the Russian Academy of Sciences</institution></aff><aff><institution xml:lang="ru">Федеральный исследовательский центр проблем химической физики и медицинской химии РАН</institution></aff></aff-alternatives><pub-date date-type="pub" iso-8601-date="2025-01-15" publication-format="electronic"><day>15</day><month>01</month><year>2025</year></pub-date><volume>59</volume><issue>1</issue><issue-title xml:lang="en"/><issue-title xml:lang="ru"/><fpage>62</fpage><lpage>76</lpage><history><date date-type="received" iso-8601-date="2025-07-01"><day>01</day><month>07</month><year>2025</year></date><date date-type="accepted" iso-8601-date="2025-07-01"><day>01</day><month>07</month><year>2025</year></date></history><permissions><copyright-statement xml:lang="en">Copyright ©; 2025, Russian Academy of Sciences</copyright-statement><copyright-statement xml:lang="ru">Copyright ©; 2025, Российская академия наук</copyright-statement><copyright-year>2025</copyright-year><copyright-holder xml:lang="en">Russian Academy of Sciences</copyright-holder><copyright-holder xml:lang="ru">Российская академия наук</copyright-holder></permissions><self-uri xlink:href="https://genescells.com/0040-3571/article/view/686515">https://genescells.com/0040-3571/article/view/686515</self-uri><abstract xml:lang="en"><p>Ethane dehydrogenation is one of the most important processes for ethylene production. The main regularities of this process have been studied in a membrane reactor with an industrial alumina-chromium catalyst and a Pd-6%Ru palladium alloy foil. The working part of the reactor consists of two cylindrical chambers separated by a membrane partition. The upper chamber is vacuumed and the lower chamber is kept at atmospheric pressure. It is known that hydrogen additives at the inlet prevent the formation of carbon deposits on the catalyst, so in this work the effect of these additives on the process was investigated. With uniform feedstock supply (ethane and hydrogen) along the outer perimeter of the lower chamber, the problem is reduced to finding the fluxes of ethane, ethylene, hydrogen and methane from the solution of a system of nonlinear ordinary differential equations. The temperature interval 600 K &lt; T &lt; 1000 K at small values of hydrogen and ethane flux ratios at the inlet is considered. The conditions under which hydrogen yield and ethane conversion reach 100% at maximum flux H<sub>2 </sub>through the membrane are found. Calculations are compared with experimental data.</p></abstract><trans-abstract xml:lang="ru"><p>Дегидрирование этана – один из важнейших процессов для получения этилена. Основные закономерности этого процесса исследованы в мембранном реакторе с промышленным алюмо-хромовым катализатором и фольгой из палладиевого сплава Pd–6%Ru. Рабочей частью реактора являются две цилиндрические камеры, разделенные мембранной перегородкой. Верхняя камера вакуумирована, а в нижней поддерживается атмосферное давление. Известно, что добавки водорода на входе препятствуют образованию углеродных отложений на катализаторе, поэтому в данной работе исследовалось влияние этих добавок на процесс. При равномерной подаче сырья (этан и водород) по внешнему периметру нижней камеры проблема сведена к нахождению потоков этана, этилена, водорода и метана из решения системы нелинейных обыкновенных дифференциальных уравнений. Рассматривается интервал температур 600 K &lt; <italic>T</italic> &lt;1000 K при небольших значениях отношений потоков водорода и этана на входе. Найдены условия, при которых выход водорода и конверсия этана достигают 100% при максимальном потоке Н<sub>2</sub> через мембрану. Проведено сравнение расчетов с экспериментальными данными.</p></trans-abstract><kwd-group xml:lang="en"><kwd>ethane</kwd><kwd>dehydrogenation</kwd><kwd>membrane</kwd><kwd>reactor</kwd></kwd-group><kwd-group xml:lang="ru"><kwd>этан</kwd><kwd>дегидрирование</kwd><kwd>мембрана</kwd><kwd>реактор</kwd></kwd-group><funding-group><award-group><funding-source><institution-wrap><institution xml:lang="ru">Министерство науки и высшего образования Российской Федерации</institution></institution-wrap><institution-wrap><institution xml:lang="en">Ministry of Science And Higher Education of the Russian Federation</institution></institution-wrap></funding-source><award-id>075-00247-24-00</award-id></award-group></funding-group></article-meta></front><body></body><back><ref-list><ref id="B1"><label>1.</label><mixed-citation>James O.O., Mandal S., Alele N., Chowdhury B., Maity S. Lower alkanes dehydrogenation: Strategies and reaction routes to corresponding alkenes // Fuel Process. Technol. 2016. 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