Ni/CeO₂ катализаторы, синтезированные методом растворного горения с использованием пористого носителя γ-Al₂O₃, для эффективного производства H₂ путем водяного риформинга глицерина

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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