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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">689888</article-id><article-id pub-id-type="doi">10.31857/S0453881125020075</article-id><article-id pub-id-type="edn">SKXOLJ</article-id><article-categories><subj-group subj-group-type="toc-heading"><subject>VIII Международная научная школа-конференция молодых ученых “Катализ: от науки к промышленности” (30 сентября–3 октября 2024 г., Томск)</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">XPS study of [Ir(COD)Cl]<sub>2</sub>–L–SiO<sub>2</sub> catalytic system</article-title><trans-title-group xml:lang="ru"><trans-title>РФЭС-исследование каталитической системы состава [Ir(COD)Cl]<sub>2</sub>–L–SiO<sub>2</sub></trans-title></trans-title-group></title-group><contrib-group><contrib contrib-type="author"><name-alternatives><name xml:lang="en"><surname>Nartova</surname><given-names>A. V.</given-names></name><name xml:lang="ru"><surname>Нартова</surname><given-names>А. В.</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><email>nartova@catalysis.ru</email><xref ref-type="aff" rid="aff1"/></contrib><contrib contrib-type="author"><name-alternatives><name xml:lang="en"><surname>Donskikh</surname><given-names>K. G.</given-names></name><name xml:lang="ru"><surname>Донских</surname><given-names>К. Г.</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><email>nartova@catalysis.ru</email><xref ref-type="aff" rid="aff1"/></contrib><contrib contrib-type="author"><name-alternatives><name xml:lang="en"><surname>Kvon</surname><given-names>R. I.</given-names></name><name xml:lang="ru"><surname>Квон</surname><given-names>Р. И.</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><email>nartova@catalysis.ru</email><xref ref-type="aff" rid="aff1"/></contrib><contrib contrib-type="author"><name-alternatives><name xml:lang="en"><surname>Kovtunova</surname><given-names>L. M.</given-names></name><name xml:lang="ru"><surname>Ковтунова</surname><given-names>Л. М.</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><email>nartova@catalysis.ru</email><xref ref-type="aff" rid="aff1"/><xref ref-type="aff" rid="aff2"/></contrib><contrib contrib-type="author"><name-alternatives><name xml:lang="en"><surname>Dmitrachkov</surname><given-names>A. M.</given-names></name><name xml:lang="ru"><surname>Дмитрачков</surname><given-names>А. М.</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><email>nartova@catalysis.ru</email><xref ref-type="aff" rid="aff1"/></contrib><contrib contrib-type="author"><name-alternatives><name xml:lang="en"><surname>Skovpin</surname><given-names>I. V.</given-names></name><name xml:lang="ru"><surname>Сковпин</surname><given-names>И. В.</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><email>nartova@catalysis.ru</email><xref ref-type="aff" rid="aff2"/></contrib><contrib contrib-type="author"><name-alternatives><name xml:lang="en"><surname>Koptyug</surname><given-names>I. V.</given-names></name><name xml:lang="ru"><surname>Коптюг</surname><given-names>И. В.</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><email>nartova@catalysis.ru</email><xref ref-type="aff" rid="aff2"/></contrib><contrib contrib-type="author"><name-alternatives><name xml:lang="en"><surname>Bukhtiyarov</surname><given-names>V. I.</given-names></name><name xml:lang="ru"><surname>Бухтияров</surname><given-names>В. И.</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><email>nartova@catalysis.ru</email><xref ref-type="aff" rid="aff1"/></contrib></contrib-group><aff-alternatives id="aff1"><aff><institution xml:lang="en">Boreskov Institute of Catalysis SB RAS</institution></aff><aff><institution xml:lang="ru">ФГБУН ФИЦ Институт катализа им. Г.К. Борескова СО РАН</institution></aff></aff-alternatives><aff-alternatives id="aff2"><aff><institution xml:lang="en">International Tomography Center SB RAS</institution></aff><aff><institution xml:lang="ru">ФГБУН Институт “Международный томографический центр” СО РАН</institution></aff></aff-alternatives><pub-date date-type="pub" iso-8601-date="2025-09-04" publication-format="electronic"><day>04</day><month>09</month><year>2025</year></pub-date><volume>66</volume><issue>2</issue><issue-title xml:lang="en"/><issue-title xml:lang="ru"/><fpage>136</fpage><lpage>146</lpage><history><date date-type="received" iso-8601-date="2025-08-26"><day>26</day><month>08</month><year>2025</year></date><date date-type="accepted" iso-8601-date="2025-08-26"><day>26</day><month>08</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://snv63.ru/0453-8811/article/view/689888">https://snv63.ru/0453-8811/article/view/689888</self-uri><abstract xml:lang="en"><p>The X-ray photoelectron spectroscopy (XPS) and nuclear magnetic resonance (NMR) spectroscopy were used to study the features of anchoring of the [Ir<sub>2</sub>(COD)<sub>2</sub>Cl<sub>2</sub>] complex on the surface of modified silica gel L–SiO<sub>2</sub> (where L is NC<sub>5</sub>H<sub>5</sub>–CH<sub>2</sub>–CH<sub>2</sub>–, N(CH<sub>3</sub>)<sub>2</sub>–CH<sub>2</sub>–CH<sub>2</sub>–CH<sub>2</sub>–, NH<sub>2</sub>–C<sub>3</sub>H<sub>6</sub>–) depending on the nature of the linker and the conditions of preparation of the systems. The catalytic activity was tested in reactions of gas-phase selective hydrogenation of propylene with parahydrogen (p-H<sub>2</sub>). According to the XPS data, a single-site iridium catalyst is prepared in all cases. Analysis of the XPS spectra indicates the possibility of anchoring the complex through one of the Ir atoms while preserving the dimer. It was shown that at different durations of interaction of the iridium complex solution with modified NH<sub>2</sub>–C<sub>3</sub>H<sub>6</sub>– silica gel approximately the same amount of the complex is anchored, but the nature of the complex coordination changes. For the sample obtained by long-term interaction of the complex solution with the modified support (24 h), a high increase in the NMR signal was observed at 60°C, while in the case of the sample prepared by short-term interaction (1 h), the signal increased with a rise in temperature to 80°C.</p></abstract><trans-abstract xml:lang="ru"><p>Методом рентгеновской фотоэлектронной спектроскопии (РФЭС) с привлечением спектроскопии ядерного магнитного резонанса (ЯМР) исследованы особенности закрепления комплекса [Ir<sub>2</sub>(COD)<sub>2</sub>Cl<sub>2</sub>] на поверхности модифицированного силикагеля L–SiO<sub>2</sub> (где L – NC<sub>5</sub>H<sub>5</sub>–CH<sub>2</sub>–CH<sub>2</sub>–, N(CH<sub>3</sub>)<sub>2</sub>–CH<sub>2</sub>–CH<sub>2</sub>–CH<sub>2</sub>–, NH<sub>2</sub>–C<sub>3</sub>H<sub>6</sub>–) в зависимости от природы линкера, а также условий приготовления систем. Каталитическую активность тестировали в реакциях газофазного селективного гидрирования пропилена параводородом (п-H<sub>2</sub>). По данным РФЭС во всех случаях удается приготовить одноцентровый закрепленный иридиевый катализатор. Анализ спектров РФЭС указывает на возможность закрепления комплекса через один из атомов Ir с сохранением димера. Было показано, что при разной длительности взаимодействия раствора комплекса иридия с модифицированным NH<sub>2</sub>–C<sub>3</sub>H<sub>6</sub>– силикагелем закрепляется примерно одинаковое количество комплекса, но характер координации меняется. Для образца, полученного при длительном взаимодействии раствора комплекса с модифицированным носителем (24 ч), наблюдалось высокое усиление сигнала ЯМР при 60°С, в то время в случае образца, приготовленного при непродолжительном взаимодействии (1 ч), сигнал усиливался при повышении температуры до 80°С.</p></trans-abstract><kwd-group xml:lang="en"><kwd>X-ray photoelectron spectroscopy</kwd><kwd>organometallic iridium complex</kwd><kwd>single - site supported catalyst</kwd><kwd>selective hydrogenation</kwd><kwd>pairwise addition of parahydrogen to unsaturated gaseous substrates</kwd></kwd-group><kwd-group xml:lang="ru"><kwd>рентгеновская фотоэлектронная спектроскопия</kwd><kwd>металлоорганический комплекс иридия</kwd><kwd>одноцентровый закрепленный катализатор</kwd><kwd>селективное гидрирование</kwd><kwd>парное присоединение</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-group></funding-group></article-meta></front><body></body><back><ref-list><ref id="B1"><label>1.</label><mixed-citation>The Handbook of Homogeneous Hydrogenation. 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