Synthesis and Characterization of Novel CO2 Methanation Catalysts Based on Ni and Carbon Nanotubes | Sciact - CRIS-система Института катализа

Synthesis and Characterization of Novel CO2 Methanation Catalysts Based on Ni and Carbon Nanotubes Научная публикация

Журнал

Chemical Engineering Science
ISSN: 0009-2509 , E-ISSN: 1873-4405

Вых. Данные

Год: 2026, Том: 320, Номер: Part B, Номер статьи : 122515, Страниц : 12 DOI: 10.1016/j.ces.2025.122515

Ключевые слова

CO2 methanation; Ni-Ce catalysts; Carbon nanotubes; Nanoparticle size effect; Low-temperature catalysis; Sustainable chemistry

Авторы

Derevschikov Vladimir S. ¹ , Suknev Alexey P. ¹ , Sadovskaya Ekaterina M. ¹ , Tiurina Arina ¹ , Yatsenko Dmitriy A. ¹ , Leonova Aleksandra A. ¹ , Gerasimov Evgeny Y. ¹ , Ruvinskiy Pavel S. ¹ , Moseenkov Sergey I. ¹ , Kuznetsov Vladimir L. ¹

Организации

1	Boreskov Institute of Catalysis SB RAS, Akademika Lavrentieva Av. 5, 630090 Novosibirsk, Russia

Информация о финансировании (2)

1	Министерство науки и высшего образования Российской Федерации (с 15 мая 2018)	FWUR-2024-0038
2	Российский научный фонд Министерство науки и инновационной политики Новосибирской области	25-13-20029

Present research reports on the novel CO2 methanation (CME) Ni- and Ni-Ce catalysts supported on carbon nanotubes (CNTs). Ni on CNT (Ni-NT) systems featured spherical Ni nanoparticles 4 nm–20 nm in size, while Ni-Ce-NT catalysts formed a “shish-kebab”-like structures with 5 nm–6 nm Ni and 4 nm–6 nm CeO2 nanoparticles. CME performance of the systems suggests the presence of a Ni particle size effect, with larger particles characterized by slower kinetics. As a result, 20Ni-NT system, as the one with sufficiently high loading and 6 nm Ni nanoparticles, was found to have the highest overall and Ni-mass specific activity among CNT-supported systems. CeO2 addition was found to improve CME activity over ceria-free references, due to the activation of CO2 via the interaction with oxygen vacancies in ceria. Combined, these synergistic effects contribute to 8Ni-20Ce-NT and 19Ni-5Ce-NT showing respectively 6.5- and 40-times higher mass-specific rates than those for 20 wt% Ni on ceria. The most efficient catalytic system in a set was 8Ni-20Ce-CNT with 98 % CH4-selectivity at 82 % yield (at 290 °C) (WHSV = 36.2 h−1). Ni-Ce-NT catalysts leverage both the unique features of the CNT (high active-site accessibility, chemical stability, mechanical strength) and a strong ceria promotion effect. Given the relative simplicity of production, Ni-Ce-NT can be promising for large-scale CME applications, supporting global decarbonization efforts.

Derevschikov V.S. , Suknev A.P. , Sadovskaya E.M. , Tiurina A. , Yatsenko D.A. , Leonova A.A. , Gerasimov E.Y. , Ruvinskiy P.S. , Moseenkov S.I. , Kuznetsov V.L.
Synthesis and Characterization of Novel CO2 Methanation Catalysts Based on Ni and Carbon Nanotubes
Chemical Engineering Science. 2026. V.320. NPart B. 122515 :1-12. DOI: 10.1016/j.ces.2025.122515 Scopus

Поступила в редакцию:	16 июл. 2025 г.
Принята к публикации:	26 авг. 2025 г.
Опубликована online:	28 авг. 2025 г.
Опубликована в печати:	15 янв. 2026 г.

Scopus:

2-s2.0-105014756436

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