najoNanosystems: Physics, Chemistry, MathematicsНаносистемы: физика, химия, математика2220-80542305-7971Университет ИТМО10.17586/2220-8054-2025-16-4-498-509najo-1451Research ArticleCHEMISTRY AND MATERIALS SCIENCEХИМИЯ И НАУКА О МАТЕРИАЛАХLa and Co-based materials for ammonia decomposition: activity, stability and structural changesМатериалы на основе La и Co для разложения аммиака: активность, стабильность и структурные измененияhttps://orcid.org/0000-0001-6289-8029БорисовВ. А.BorisovV. A.

Vadim A. Borisov

Neftezavodskaya st., 54, Omsk, 644040, Russia

borisovtiger86@mail.ruhttps://orcid.org/0000-0003-1374-5557ФедороваЗ. А.FedorovaZ. A.

Zaliya A. Fedorova

Lavrentiev Ave., 5, Novosibirsk, 630090, Russia

sabirova@catalysis.ruhttps://orcid.org/0009-0008-0370-4528ИчетовкинЗ. Н.IchetovkinZ. N.

Zakhar N. Ichetovkin - Department of Technology of Inorganic Materials and Electrochemical Production

Moskovskaya st., 36, Kirov, 610000, Russia

Kutateladze st., 18, Novosibirsk, 630128, Russia

zakhar1030@mail.ruhttps://orcid.org/0000-0002-3230-3335ГерасимовЕ. Ю.GerasimovE. Y.

Evgeniy Y. Gerasimov

Lavrentiev Ave., 5, Novosibirsk, 630090, Russia

gerasimov@catalysis.ruhttps://orcid.org/0000-0001-6280-9292ШляпинД. А.ShlyapinD. A.

Dmitry A. Shlyapin

Lavrentiev Ave., 5, Novosibirsk, 630090, Russia 

dmitryshlyapin@yandex.ruhttps://orcid.org/0000-0002-6772-3321СтроеваА. Ю.StroevaA. Y.

Anna Y. Stroeva - Department of Technology of Inorganic Materials and Electrochemical Production

Moskovskaya st., 36, Kirov, 610000, Russia 

 

stroevaanna@yandex.ruhttps://orcid.org/0000-0002-4524-4178ТемеревВ. Л.TemerevV. L.

Victor L. Temerev

Neftezavodskaya st., 54, Omsk, 644040, Russia 

tvl@ihcp.ruhttps://orcid.org/0000-0003-1847-6544АрбузовА. В.ArbuzovA. B.

Alexey B. Arbuzov

Neftezavodskaya st., 54, Omsk, 644040, Russia 

arbuzov@ihcp.ruhttps://orcid.org/0000-0003-1038-6018ЦыбуляС. В.TsybulyaS. V.

Sergey V. Tsybulya 

Lavrentiev Ave., 5, Novosibirsk, 630090, Russia 

tsybulya@catalysis.ruhttps://orcid.org/0000-0002-5057-3187СнытниковП. В.SnytnikovP. V.

Pavel V. Snytnikov

Lavrentiev Ave., 5, Novosibirsk, 630090, Russia 

pvsnyt@catalysis.ruhttps://orcid.org/0000-0002-0700-662XКузьминА. В.KuzminA. V.

Anton V. Kuzmin - Department of Technology of Inorganic Materials and Electrochemical Production

Moskovskaya st., 36, Kirov, 610000, Russia 

a.v.kuzmin@yandex.ruCenter of New Chemical Technologies BIC, Boreskov Institute of CatalysisRussian FederationBoreskov Institute of CatalysisRussian FederationVyatka State University; Institute of Solid State Chemistry and Mechanochemistry of the Siberian Branch of the RASRussian FederationVyatka State UniversityRussian Federation202503092025164498509Copyright © Borisov V.A., Fedorova Z.A., Ichetovkin Z.N., Gerasimov E.Y., Shlyapin D.A., Stroeva A.Y., Temerev V.L., Arbuzov A.B., Tsybulya S.V., Snytnikov P.V., Kuzmin A.V., 20252025Борисов В.А., Федорова З.А., Ичетовкин З.Н., Герасимов Е.Ю., Шляпин Д.А., Строева А.Ю., Темерев В.Л., Арбузов А.В., Цыбуля С.В., Снытников П.В., Кузьмин А.В.Borisov V.A., Fedorova Z.A., Ichetovkin Z.N., Gerasimov E.Y., Shlyapin D.A., Stroeva A.Y., Temerev V.L., Arbuzov A.B., Tsybulya S.V., Snytnikov P.V., Kuzmin A.V.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/1451

The La0.9Sr0.1Sc0.9Co0.1O3-δ (LS) and La0.9Sr0.1CoO3-δ (LC) phases and composite materials based on them were synthesized. There are data in the literature on the activity of pure or modified forms of LC in ammonia decomposition, but there are no data on the activity of the LS phase and LS–LC composites. Therefore, the stability and activity of LS–LC composites and initial LS and LC in ammonia decomposition were investigated. The best result in the decomposition of ammonia at 700◦C and WHSV of 60000 ml NH3·g-1cat ·h-1 shows LC – 99%, the worst LS – 80%. Under the same conditions, the activity of samples LC, 40LS–60LC and 50LS–50LC remains unchanged for 40 hours. It was found that during ammonia decomposition, the LC phase decomposes to form cobalt and La(OH)3 nanoparticles, but the LS phase does not undergo significant changes, which is confirmed by X-ray diffraction, IR spectroscopy, Raman spectroscopy and TEM.

Были синтезированы фазы La0.9Sr0.1Sc0.9Co0.1O3-δ (LS) и La0.9Sr0.1CoO3-δ (LC) и композитные материалы на их основе. В литературе есть данные об активности чистых или модифицированных форм LC при разложении аммиака, но нет данных об активности фазы LS и композитов LS-LC. Поэтому были исследованы стабильность и активность композитов LS-LC и исходных LS и LC в разложении аммиака. Наилучший результат разложения аммиака при температуре 700 °C и WHSV 60 000 мл NH3·гкат-1·ч-1 показывает LC — 99%, наихудший — LS — 80%. При тех же условиях активность образцов LC, 40LS-60LC и 50LS-50LC остаётся неизменной в течение 40 часов. Было обнаружено, что при разложении аммиака фаза LC распадается с образованием наночастиц кобальта и La(OH)3, но фаза LS не претерпевает значительных изменений, что подтверждается результатами рентгеновской дифракции, ИК-спектроскопии, рамановской спектроскопии и ПЭМ.разложение аммиакакобальткобальтит лантанаскандат лантанаэлектродные материалыAmmonia decompositioncobaltlanthanum scandateelectrode materialsThis work was supported by the Ministry of Science and Higher Education of the Russian Federation within the governmental assignment for the Boreskov Institute of Catalysis (project FWUR- 2024-0039 and FWUR-2024-0033). Physico-chemical studies were carried out using facilities of the shared research center “National center of investigation of catalysts” at Boreskov Institute of Catalysis.ReferencesAbe J.O., Popoola A.P.I., Ajenifuja E., Popoola O.M. Hydrogen energy, economy and storage: Review and recommendation. 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The authors declare that there are no conflicts of interest present.