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 Full article

Journal

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

Output data

Year: 2025, Volume: 16, Number: 4, Pages: 498-509 Pages count : 12 DOI: 10.17586/2220-8054-2025-16-4-498-509

Tags

Ammonia decomposition, cobalt, lanthanum scandate, electrode materials.

Authors

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

Affiliations

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

Funding (2)

1	Ministry of Science and Higher Education of the Russian Federation	FWUR-2024-0039
2	Ministry of Science and Higher Education of the Russian Federation	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

Submitted:	Jun 8, 2025
Accepted:	Jun 22, 2025
Published online:	Sep 5, 2025

OpenAlex:

W4414023708

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