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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">Kinetics and Catalysis</journal-id><journal-title-group><journal-title xml:lang="en">Kinetics and Catalysis</journal-title><trans-title-group xml:lang="ru"><trans-title>Кинетика и катализ</trans-title></trans-title-group></journal-title-group><issn publication-format="print">0453-8811</issn><issn publication-format="electronic">3034-5413</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">660358</article-id><article-id pub-id-type="doi">10.31857/S0453881124020107</article-id><article-id pub-id-type="edn">DWLCWO</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">Mathematical modelling of a self-oscillating catalytic reaction in a flow reactor</article-title><trans-title-group xml:lang="ru"><trans-title>Математическое моделирование автоколебательной каталитической реакции в проточном реакторе</trans-title></trans-title-group></title-group><contrib-group><contrib contrib-type="author"><name-alternatives><name xml:lang="en"><surname>Peskov</surname><given-names>N. V.</given-names></name><name xml:lang="ru"><surname>Песков</surname><given-names>Н. В.</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><bio xml:lang="en"><p>Faculty of Computational Mathematics and Cybernetics</p></bio><bio xml:lang="ru"><p>Факультет вычислительной математики и кибернетики</p></bio><email>peskovnick@gmail.com</email><xref ref-type="aff" rid="aff1"/></contrib><contrib contrib-type="author"><name-alternatives><name xml:lang="en"><surname>Slinko</surname><given-names>M. M.</given-names></name><name xml:lang="ru"><surname>Слинько</surname><given-names>М. М.</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><email>peskov@cs.msu.ru</email><xref ref-type="aff" rid="aff2"/></contrib></contrib-group><aff-alternatives id="aff1"><aff><institution xml:lang="en">Moscow State University</institution></aff><aff><institution xml:lang="ru">ФГБОУ ВО МГУ им. М.В. Ломоносова</institution></aff></aff-alternatives><aff-alternatives id="aff2"><aff><institution xml:lang="en">Semenov Institute of Chemical Physics</institution></aff><aff><institution xml:lang="ru">ФГБУН Институт химической физики РАН им. Н.Н. Семенова</institution></aff></aff-alternatives><pub-date date-type="pub" iso-8601-date="2024-03-15" publication-format="electronic"><day>15</day><month>03</month><year>2024</year></pub-date><volume>65</volume><issue>2</issue><fpage>224</fpage><lpage>232</lpage><history><date date-type="received" iso-8601-date="2025-02-22"><day>22</day><month>02</month><year>2025</year></date></history><permissions><copyright-statement xml:lang="en">Copyright ©; 2024, Russian Academy of Sciences</copyright-statement><copyright-statement xml:lang="ru">Copyright ©; 2024, Российская академия наук</copyright-statement><copyright-year>2024</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://journals.eco-vector.com/0453-8811/article/view/660358">https://journals.eco-vector.com/0453-8811/article/view/660358</self-uri><abstract xml:lang="en"><p>The article is devoted to the analysis of possible spatiotemporal kinetic structures that can arise during catalytic oxidation reactions on metal surfaces at atmospheric pressure. The catalytic oscillatory reaction in a flow reactor is modeled using a 1D system of equations of the reaction–diffusion–convection type. The STM type oscillatory reaction model of catalytic oxidation is used as a kinetic model. The obtained results of mathematical modelling show the decisive influence of an axial mixing in the reactor on the development of spatiotemporal structures. It is also shown that, depending on the ratio of adsorption constants of reacting species, three different isothermal spatiotemporal structures can arise, namely a spatially inhomogeneous stationary state, regular and aperiodic “breathing structures”.</p></abstract><trans-abstract xml:lang="ru"><p>Настоящая работа посвящена анализу возможных пространственно-временных кинетических структур, которые могут возникать в ходе реакций каталитического окисления на металлических поверхностях при атмосферном давлении. Каталитическая колебательная реакция в проточном реакторе моделируется с помощью 1D системы уравнений типа реакция–диффузия–конвекция. В качестве кинетической модели используется модель колебательной реакции каталитического окисления типа Sales–Turner–Maple (STM). Полученные результаты математического моделирования показывают решающее влияние продольного перемешивания в реакторе на возникновение пространственно-временных структур. Показано также, что в зависимости от соотношения констант адсорбции реагирующих веществ могут возникать три различные изотермические пространственно-временные структуры, а именно неоднородное по пространству стационарное состояние, регулярные и апериодические “дышащие структуры”.</p></trans-abstract><kwd-group xml:lang="en"><kwd>catalytic oxidation</kwd><kwd>nonlinear dynamics</kwd><kwd>spatiotemporal structures</kwd><kwd>mathematical modeling</kwd><kwd>reaction–diffusion–convection equations</kwd></kwd-group><kwd-group xml:lang="ru"><kwd>каталитическое окисление</kwd><kwd>нелинейная динамика</kwd><kwd>пространственно-временные структуры</kwd><kwd>математическое моделирование</kwd><kwd>уравнения реакция–диффузия–конвекция</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>122040500058-1</award-id></award-group></funding-group></article-meta></front><body></body><back><ref-list><ref id="B1"><label>1.</label><mixed-citation>Schuth F., Henry B.E., Schmidt L.D. // Adv. 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