najoNanosystems: Physics, Chemistry, MathematicsНаносистемы: физика, химия, математика2220-80542305-7971Университет ИТМО10.17586/2220-8054-2025-16-1-30-43najo-79Research ArticleCHEMISTRY AND MATERIALS SCIENCEХИМИЯ И НАУКА О МАТЕРИАЛАХDesign of highly active NixCo1-xAl2O4 (x = 0:1 – 0:5) catalysts for the dry reforming of methane reactionНовые перспективные подходы к разработке высокоактивных и коксоустойчивых катализаторов на основе Ni-Co наносплава на шпинельной структуре и их исследование в реакции углекислотной конверсии метанаhttps://orcid.org/0009-0008-1682-1125ШутиловА. А.ShutilovA. A.

Alexey A. Shutilov

Lavrentieva 5, Novosibirsk 630090

aalshut@catalysis.ruhttps://orcid.org/0000-0002-5161-5684СимоновМ. Н.SimonovM. N.

Mikhail N. Simonov

Lavrentieva 5, Novosibirsk 630090

Pirogova 2, Novosibirsk 630090

smike@catalysis.ruhttps://orcid.org/0000-0002-0551-1892ФедороваВ. Е.FedorovaV. E.

Valeria E. Fedorova

Lavrentieva 5, Novosibirsk 630090

valeria@catalysis.ruhttps://orcid.org/0000-0003-4063-5142МарчукА. С.MarchukA. S.

Alexander S. Marchuk

Pirogova 2, Novosibirsk 630090

alexander.s.marchuk@gmail.comhttps://orcid.org/0000-0002-0351-5128ПросвиринИ. П.ProsvirinI. P.

Igor P. Prosvirin

Lavrentieva 5, Novosibirsk 630090

prosvirin@catalysis.ruhttps://orcid.org/0000-0002-3896-8071ЗенковецГ. А.ZenkovetsG. A.

Galina A. Zenkovets

Lavrentieva 5, Novosibirsk 630090

zenk@catalysis.ruBoreskov Institute of Catalysis SB RASRussian FederationBoreskov Institute of Catalysis SB RAS; Novosibirsk State UniversityRussian FederationNovosibirsk State UniversityRussian Federation2025010620251613043Copyright © Shutilov A.A., Simonov M.N., Fedorova V.E., Marchuk A.S., Prosvirin I.P., Zenkovets G.A., 20252025Шутилов А.А., Симонов М.Н., Федорова В.Е., Марчук А.С., Просвирин И.П., Зенковец Г.А.Shutilov A.A., Simonov M.N., Fedorova V.E., Marchuk A.S., Prosvirin I.P., Zenkovets G.A.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/79

On the first step using co-precipitation method from Ni-, Co-, Al-containing solution a precipitates with a general composition of NixCo1-xAl2O4 (x = 0:1 – 0:5) were prepared. Calcination the obtained precipitates at 700 C in air makes the precursors of catalysts for DRM with a stable spinel-like framework in which nickel and cobalt species are homogeneously incorporated. Reduction of the precursors at 700 C in H2 and further work under reaction medium leads to formation of the active phase which represents by the ensembles of Ni–Co alloy nanoparticles located on the surface of nanostructured spinel. The effect of the catalysts composition on catalytic properties in DRM was investigated. The high and stable catalytic activity of representative samples in DRM conditions with extremely short contact time ( = 30 ms) due to the formation of 17 – 18 wt. % active phase which represents highly dispersed (3 – 4 nm) Ni–Co alloy nanoparticles stabilized on the spinel with nanocristalline structure.

На первом этапе методом соосаждения из раствора солей, содержащего Ni-, Co, Al, были получены осадки расчетного состава NixCo1-xAl2O4 (x=0.1-0.5). Прокаливание полученных осадков при 700 С на воздухе приводит к формированию предшественников катализаторов реакции углекислотной конверсии метана (УКМ) с устойчивым шпинелеподобным каркасом, в котором однородно распределены частицы никеля и кобальта. Восстановление предшественников катализаторов при 700 С в Н2 и дальнейшая работа в реакционной среде приводит к образованию активной фазы, которая представляет собой ансамбли наночастиц сплава Ni-Co, расположенных на поверхности наноструктурированной шпинели. Исследовано влияние состава катализаторов на каталитические свойства в реакции УКМ. Установлена высокая и стабильная каталитическая активность представительных образцов в условиях реакции при предельно коротком времени контакта (=30 мс) за счет образования 1718 мас. % активной фазы, представляющей собой высокодисперсные (3-4 нм) наночастицы сплава Ni-Co, стабилизированные на шпинели с нанокристаллической структурой.

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