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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">catal</journal-id><journal-title-group><journal-title xml:lang="ru">Катализ в промышленности</journal-title><trans-title-group xml:lang="en"><trans-title>Kataliz v promyshlennosti</trans-title></trans-title-group></journal-title-group><issn pub-type="ppub">1816-0387</issn><issn pub-type="epub">2413-6476</issn><publisher><publisher-name>LLC "KALVIS"</publisher-name></publisher></journal-meta><article-meta><article-id pub-id-type="doi">10.18412/1816-0387-2025-1-23-33</article-id><article-id custom-type="elpub" pub-id-type="custom">catal-1109</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>КАТАЛИЗ В ХИМИЧЕСКОЙ И НЕФТЕХИМИЧЕСКОЙ ПРОМЫШЛЕННОСТИ</subject></subj-group><subj-group subj-group-type="section-heading" xml:lang="en"><subject>CATALYSIS IN CHEMICAL AND PETROCHEMICAL INDUSTRY</subject></subj-group></article-categories><title-group><article-title>Получение сополимеров этилена с гексеном-1 с бимодальным молекулярно-массовым распределением и оптимальным распределением разветвлений на высокоактивном нанесенном ванадий-магниевом катализаторе</article-title><trans-title-group xml:lang="en"><trans-title>Preparation of Ethylene-1-Hexene Copolymers with Bimodal Molecular Weight Distribution and Optimal Branching Distribution on a Highly Active Supported Vanadium-Magnesium Catalyst</trans-title></trans-title-group></title-group><contrib-group><contrib contrib-type="author" corresp="yes"><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Микенас</surname><given-names>Т. Б.</given-names></name><name name-style="western" xml:lang="en"><surname>Mikenas</surname><given-names>T. B.</given-names></name></name-alternatives><email xlink:type="simple">ctls@kalvis.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>Захаров</surname><given-names>В. А.</given-names></name><name name-style="western" xml:lang="en"><surname>Zakharov</surname><given-names>V. A.</given-names></name></name-alternatives><email xlink:type="simple">ctls@kalvis.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>Мацько</surname><given-names>М. А.</given-names></name><name name-style="western" xml:lang="en"><surname>Matsko</surname><given-names>M. A.</given-names></name></name-alternatives><email xlink:type="simple">ctls@kalvis.ru</email><xref ref-type="aff" rid="aff-1"/></contrib></contrib-group><aff-alternatives id="aff-1"><aff xml:lang="ru"><institution>Институт катализа СО РАН, Новосибирск</institution><country>Россия</country></aff><aff xml:lang="en"><institution>Boreskov Institute of Catalysis, Siberian Branch of the Russian Academy of Sciences, Novosibirsk</institution><country>Russian Federation</country></aff></aff-alternatives><pub-date pub-type="collection"><year>2025</year></pub-date><pub-date pub-type="epub"><day>22</day><month>01</month><year>2025</year></pub-date><volume>25</volume><issue>1</issue><fpage>23</fpage><lpage>33</lpage><permissions><copyright-statement>Copyright &amp;#x00A9; LLC "KALVIS", 2025</copyright-statement><copyright-year>2025</copyright-year><copyright-holder xml:lang="ru">LLC "KALVIS"</copyright-holder><copyright-holder xml:lang="en">LLC "KALVIS"</copyright-holder><license xlink:href="https://www.catalysis-kalvis.ru/jour/about/submissions#copyrightNotice" xlink:type="simple"><license-p>https://www.catalysis-kalvis.ru/jour/about/submissions#copyrightNotice</license-p></license></permissions><self-uri xlink:href="https://www.catalysis-kalvis.ru/jour/article/view/1109">https://www.catalysis-kalvis.ru/jour/article/view/1109</self-uri><abstract><p>С использованием новой модификации высокоактивного ванадий-магниевого катализатора (ВМК) получены данные о влиянии содержания водорода и гексена-1 на активность катализатора и молекулярную структуру получаемых полимеров. Установлено, что образование полиэтилена (ПЭ) с широким бимодальным молекулярно-массовым распределением (ММР) на ВМК связано с наличием в этих катализаторах двух групп активных центров, отличающихся реакционной способностью в реакции переноса полимерной цепи с водородом. Найдено также, что присутствие гексена-1 при сополимеризации приводит к дополнительному уширению ММР сополимера за счет преимущественного снижения молекулярной массы сополимера в низкомолекулярной области. При этом активные центры ВМК, производящие высокомолекулярный полимер, практически не участвуют в реакции переноса цепи с гексеном-1. В то же время эти центры более реакционноспособны в реакции внедрения гексена-1, что приводит к повышенному содержанию бутильных разветвлений в высокомолекулярной фракции сополимеров. Найденные кинетические особенности высокоактивных ВМК свидетельствуют об их перспективности для получения трубных и пленочных марок ПЭ по однореакторной схеме вместо двухреакторной схемы, используемой для получения бимодального ПЭ на традиционных титан-магниевых катализаторах.</p></abstract><trans-abstract xml:lang="en"><p>Using a new modification of a highly active vanadium-magnesium catalyst (VMC), data were obtained on the effect of hydrogen and hexene-1 content on the catalyst activity and the molecular structure of the resulting polymers. It was found that the formation of polyethylene (PE) with a wide bimodal molecular weight distribution (MWD) on VMC is associated with the presence of two groups of active centers in these catalysts, differing in their reactivity in the polymer chain transfer reaction with hydrogen. It was also found that the presence of hexene-1 during copolymerization leads to an additional broadening of the MWD of the copolymer due to a predominant decrease in the molecular weight of the copolymer in the low-molecular region. At the same time, the active centers of the VMC, producing a high-molecular polymer, practically do not participate in the chain transfer reaction with hexene-1. At the same time, these centers are more reactive in the reaction of insertion of hexene-1, which leads to an increased content of butyl branches in the high-molecular fraction of the copolymers. The kinetic features of highly active VMCs found indicate their promise for the production of pipe and film grades of PE using a one-reactor scheme instead of a two-reactor scheme used to produce bimodal PE on traditional titanium-magnesium catalysts.</p></trans-abstract><kwd-group xml:lang="ru"><kwd>нанесенные катализаторы Циглера–Натта</kwd><kwd>нанесенный ванадий-магниевый катализатор</kwd><kwd>молекулярно-массовое распределение</kwd><kwd>бимодальный полиэтилен</kwd><kwd>сополимеры этилена с α-олефинами</kwd></kwd-group><kwd-group xml:lang="en"><kwd>supported Ziegler-Natta catalysts</kwd><kwd>supported vanadium-magnesium catalyst</kwd><kwd>molecular weight distribution</kwd><kwd>bimodal polyethylene</kwd><kwd>ethylene copolymers with α-olefins</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">Spalding M. A., Chatterjee A. (Eds.). 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