La and Co-based materials for ammonia decomposition: activity, stability and structural changes

La and Co-based materials for ammonia decomposition: activity, stability and structural changes Научная публикация

Журнал

NANOSYSTEMS: PHYSICS, CHEMISTRY, MATHEMATICS
ISSN: 2220-8054

Вых. Данные

Год: 2025, Том: 16, Номер: 4, Страницы: 498-509 Страниц : 12 DOI: 10.17586/2220-8054-2025-16-4-498-509

Ключевые слова

Ammonia decomposition, cobalt, lanthanum scandate, electrode materials.

Авторы

Borisov V.A. ¹ , Fedorova Z.A. ² , Ichetovkin Z.N. ^3,4 , Gerasimov E.Y. ² , Shlyapin D.A. ² , Stroeva A.Y. ³ , Temerev V.L. ¹ , Arbuzov A.B. ¹ , Tsybulya S.V. ² , Snytnikov P.V. ² , Kuzmin A.V. ³

Организации

1	Center of New Chemical Technologies BIC, Boreskov Institute of Catalysis
2	Boreskov Institute of Catalysis
3	Vyatka State University; Institute of Solid State Chemistry and Mechanochemistry of the Siberian Branch of the RAS
4	Institute of Solid State Chemistry and Mechanochemistry of the Siberian Branch of the RAS

Информация о финансировании (2)

1	Министерство науки и высшего образования Российской Федерации	FWUR-2024-0039
2	Министерство науки и высшего образования Российской Федерации	FWUR-2024-0033

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·gcat−1·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.

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.
La and Co-based materials for ammonia decomposition: activity, stability and structural changes
NANOSYSTEMS: PHYSICS, CHEMISTRY, MATHEMATICS. 2025. V.16. N4. P.498-509. DOI: 10.17586/2220-8054-2025-16-4-498-509 OpenAlex

Поступила в редакцию:	8 июн. 2025 г.
Принята к публикации:	22 июн. 2025 г.
Опубликована online:	5 сент. 2025 г.

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