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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">vuzbiochemi</journal-id><journal-title-group><journal-title xml:lang="ru">Известия вузов. Прикладная химия и биотехнология</journal-title><trans-title-group xml:lang="en"><trans-title>Proceedings of Universities. Applied Chemistry and Biotechnology</trans-title></trans-title-group></journal-title-group><issn pub-type="ppub">2227-2925</issn><issn pub-type="epub">2500-1558</issn><publisher><publisher-name>ИРНИТУ</publisher-name></publisher></journal-meta><article-meta><article-id pub-id-type="doi">10.21285/achb.976</article-id><article-id custom-type="edn" pub-id-type="custom">ABYFPO</article-id><article-id custom-type="elpub" pub-id-type="custom">vuzbiochemi-1465</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>ХИМИЧЕСКИЕ НАУКИ</subject></subj-group><subj-group subj-group-type="section-heading" xml:lang="en"><subject>CHEMICAL SCIENCES</subject></subj-group></article-categories><title-group><article-title>Автоколебания в гомогенных химических реакциях, протекающих по линейным стадийным схемам</article-title><trans-title-group xml:lang="en"><trans-title>Self-oscillations in homogeneous chemical reactions proceeding in a linear stepwise manner</trans-title></trans-title-group></title-group><contrib-group><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0003-2264-1370</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Кольцов</surname><given-names>Н. И.</given-names></name><name name-style="western" xml:lang="en"><surname>Kol’tsov</surname><given-names>N. I.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Кольцов Николай Иванович, д.х.н., профессор, заведующий кафедрой</p><p>428034, г. Чебоксары, Московский пр., 15</p></bio><bio xml:lang="en"><p>Nikolay I. Kol’tsov, Dr. Sci. (Chemistry), Professor, Head of the Department</p><p>15, Moskovskiy Ave., Cheboksary, 428034</p></bio><email xlink:type="simple">koltsovni@mail.ru</email><xref ref-type="aff" rid="aff-1"/></contrib></contrib-group><aff-alternatives id="aff-1"><aff xml:lang="ru"><institution>Чувашский государственный университет имени И.Н. Ульянова</institution><country>Россия</country></aff><aff xml:lang="en"><institution>Chuvash State University named after I.N. Ulyanov</institution><country>Russian Federation</country></aff></aff-alternatives><pub-date pub-type="collection"><year>2025</year></pub-date><pub-date pub-type="epub"><day>16</day><month>06</month><year>2025</year></pub-date><volume>15</volume><issue>2</issue><elocation-id>150–157</elocation-id><permissions><copyright-statement>Copyright &amp;#x00A9; Кольцов Н.И., 2025</copyright-statement><copyright-year>2025</copyright-year><copyright-holder xml:lang="ru">Кольцов Н.И.</copyright-holder><copyright-holder xml:lang="en">Kol’tsov N.I.</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://vuzbiochemi.elpub.ru/jour/article/view/1465">https://vuzbiochemi.elpub.ru/jour/article/view/1465</self-uri><abstract><p>Колебательные химические и биохимические реакции представляют особенный интерес для понимания сложных механизмов эволюции и самоорганизации в живой природе. В настоящее время незатухающие колебания (автоколебания, осцилляции) обнаружены во многих химических и биологических реакциях: реакциях типа Белоусова – Жаботинского («броматные осцилляторы»), Бриггса – Раушера («иодные часы»), Брея – Либавски, жидкофазного окисления бензальдегида и др. В рамках идеальной кинетики закона действующих масс автоколебания описываются только нелинейными механизмами, которые могут порождать неустойчивое протекание реакции. Целью проведенного исследования являлось изучение возможности описания автоколебаний в гомогенных химических реакциях, протекающих по линейным механизмам с неидеальной кинетикой. В ходе работы были использованы качественная теория обыкновенных дифференциальных уравнений и численные методы их решения. В результате рассмотрены гомогенные химические реакции, протекающие по неидеальному кинетическому закону Марселина – Де Донде в открытом изотермическом безградиентном реакторе по линейным стадийным схемам с участием трех и более реагентов. Показано, что в таких реакциях возможны автоколебания концентраций реагентов и скорости реакции различной периодичности и частоты. Для этих реакций построены математические модели, описывающие автоколебания, обусловленные отклонениями от идеальной кинетики закона действующих масс с учетом возможного взаимного влияния реагентов. Приведены примеры линейных стадийных схем-осцилляторов на основе классической модели колебательной химической реакции «брюсселятор» и реакции изомеризации бутенов. Предложено альтернативное объяснение возможных причин возникновения автоколебаний, основанное на нарушении устойчивых режимов протекания гомогенных реакций за счет неидеальности их кинетического закона, что позволяет описать автоколебания в таких реакциях линейными стадийными схемами.</p></abstract><trans-abstract xml:lang="en"><p>Oscillating chemical and biochemical reactions are of particular interest for understanding complex mechanisms underlying the evolution and self-organization of wildlife. Sustained oscillations (self-oscillations) are observed in a number of chemical and biological reactions: reactions of Belousov – Zhabotinsky (“bromate oscillators”), Briggs – Rauscher (“iodine clock”), Bray – Liebhafsky, liquid-phase oxidation of benzaldehyde, etc. In the ideal kinetics of the law of mass action, self-oscillations are described only by nonlinear mechanisms that can yield an unstable reaction. The present study aims to explore the possibility of describing self-oscillations in homogeneous chemical reactions proceeding according to linear mechanisms with nonideal kinetics. In the course of work, the qualitative theory of ordinary differential equations and numerical methods for their solution were used. The study considers homogeneous chemical reactions proceeding according to linear stepwise schemes with three or more reactants with nonideal Marcelin – de Donder kinetics in an open isothermal gradientless reactor. These reactions are shown to involve the self-oscillations of reactant concentrations and reaction rate, with varying periodicity and frequency. For these reactions, mathematical models were constructed to describe self-oscillations associated with deviations from the ideal kinetics of the law of mass action, taking the possible mutual influence of reactants into account. Examples are given of linear stepwise schemes based on the Brusselator, a classical model for chemical oscillations, and the butene isomerization reaction. An alternative explanation is proposed for the possible causes of self-oscillations: stable modes of homogeneous reactions are disrupted due to the nonideal kinetics, which enables the description of self-oscillations in such reactions by linear stepwise schemes.</p></trans-abstract><kwd-group xml:lang="ru"><kwd>автоколебания</kwd><kwd>гомогенные химические реакции</kwd><kwd>линейные стадийные схемы</kwd><kwd>кинетика Марселина – Де Донде</kwd><kwd>безградиентный реактор</kwd></kwd-group><kwd-group xml:lang="en"><kwd>self-oscillations</kwd><kwd>homogeneous chemical reactions</kwd><kwd>linear stepwise schemes</kwd><kwd>Marcelin – de Donder kinetics</kwd><kwd>gradientless reactor</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">Николис Г., Пригожин И. Самоорганизация в неравновесных системах: от диссипативных структур к упорядоченности через флуктуации / пер. с англ. 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