najoNanosystems: Physics, Chemistry, MathematicsНаносистемы: физика, химия, математика2220-80542305-7971Университет ИТМО10.17586/2220-8054-2026-17-3-375-386najo-1845Research ArticleCHEMISTRY AND MATERIALS SCIENCEХИМИЯ И НАУКА О МАТЕРИАЛАХNi/CeO2 catalysts synthesized by SCS with a porous γ-Al2O3 support for efficient H2 production via aqueous-phase glycerol reformingNi/CeO2 катализаторы, синтезированные методом растворного горения с использованием пористого носителя γ-Al2O3, для эффективного производства H2 путем водяного риформинга глицеринаhttps://orcid.org/0000-0001-6689-1430МатвееваА. Н.MatveyevaA. N.

Anna N. Matveyeva

Politekhnicheskaya ul., 28, St. Petersburg, 194021

anna.matveyeva@mail.ioffe.ruhttps://orcid.org/0000-0002-6862-128XОмаровШ. О.OmarovSh. O.

Shamil O. Omarov

Politekhnicheskaya ul., 28, St. Petersburg, 194021

somarov@mail.ioffe.ruhttps://orcid.org/0000-0003-2003-0672ТеневичМ. И.TenevichM. I.

Maksim I. Tenevich

Politekhnicheskaya ul., 28, St. Petersburg, 194021

m.tenevich@mail.ioffe.ruIoffe InstituteRussian Federation202618072026173375386Copyright © Matveyeva A.N., Omarov S.O., Tenevich M.I., 20262026Матвеева А.Н., Омаров Ш.О., Теневич М.И.Matveyeva A.N., Omarov S.O., Tenevich M.I.Данная работа распространяется под лицензией Creative Commons Attribution 4.0.This work is licensed under a Creative Commons Attribution 4.0 License.https://nanojournal.ifmo.ru/jour/article/view/1845

Aqueous-phase reforming (APR) of glycerol for H2 production was evaluated over a supported Ni/CeO2 (CeNi) catalyst prepared by introducing a porous γ-Al2O3 support into the reaction mixture during solution combustion synthesis. This approach enables the preparation of a catalyst with improved pore volume and average pore size, which is crucial for facilitating reactant diffusion. Unlike the bulk CeNi system, the presence of alumina increases the availability of active nickel nanoparticles and enhances ceria and nickel dispersion. The glycerol APR results show that CeNi/γ-Al2O3 provides higher glycerol conversion and hydrogen yield compared to the bulk system. Notably, halving the active component content leads to a 2.3-fold increase in activity, which is independent of the feed flow rate and, consequently, of the extent of diffusion limitations. The catalyst obtained in this study outperformed known analogs in terms of H2 formation rate, while maintaining high glycerol conversion and H2 selectivity.

Проведена оценка водяного риформинга глицерина (APR) для получения H2 на Ni/CeO2 (CeNi) катализаторе, полученном путем введения пористого носителя γ-Al2O3 в реакционную смесь в процессе синтеза методом растворного горения. Такой подход позволяет получить катализатор с улучшенным объёмом и средним размером пор, что имеет решающее значение для облегчения диффузии реагентов. В отличие от массивной CeNi системы, присутствие оксида алюминия увеличивает доступность активных наночастиц никеля и улучшает дисперсность оксида церия и никеля. Результаты APR глицерина показывают, что CeNi/γ-Al2O3 обеспечивает большую степень превращения глицерина и выход водорода по сравнению с массивной системой. Примечательно, что уменьшение содержания активного компонента вдвое приводит к 2,3-кратному увеличению активности, которое не зависит от скорости потока исходного сырья и, следовательно, от степени диффузионных ограничений. Полученный в данном исследовании катализатор превзошел известные аналоги по скорости образования H2, сохраняя при этом высокую степень развращения глицерина и селективность по H2.

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The authors declare that there are no conflicts of interest present.