Реферат: Bulk nickel and nickel-alumina catalysts were prepared by solid-state combustion (SSC) from energy-rich complexes that are formed by adding liquid ethylenediamine to solid nickel nitrate at molar ratios of 1 : 2 and 1 : 3. It was noted that the fast gasification of a complex mixed with alumina minimized their interaction; therefore, the main condensed combustion product was nickel oxide, as with the combustion of individual complexes. A study of the obtained nickel-containing catalysts for CO2 methanation showed that a catalytically active phase was formed at temperatures ranging from 250 to 350 °C, even in a reaction medium in the presence of CO2. It was found that after activation, the nickel-alumina catalyst more effectively catalyzed the methanation of CO2 compared to the synthesized bulk catalyst and the industrial NIAP-07-01 catalyst containing ∼2 times more nickel. Indeed, the amount of CO2 converted into methane on the synthesized nickel-alumina catalyst was 1.5, 3, 8 and 9 times higher than on NIAP-07-01 at 350, 300, 250 and 200 °C, respectively. Furthermore, the catalyst synthesized by the SSC method is capable of methanating CO2 even at 150 °C. Its activity does not decrease over time, and it steadily converts about 55% of CO2 into methane at 350 °C for 10 hours.

Библиографическая ссылка: Netskina O.V. , Dmitruk K.A. , Podolyako I.A. , Mukha S.A. , Ishchenko A.V. , Prosvirin I.P. , Bulavchenko O.A. , Rogov V.A. , Suknev A.P. , Komova O.V.
Production of Synthetic Natural Gas: A Study of Nickel Catalysts Obtained by Solid-State Combustion of Nickel Complexes with Ethylenediamine
Nanoscale. 2025. DOI: 10.1039/d5nr00186b WOS

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Поступила в редакцию:	15 янв. 2025 г.
Принята к публикации:	2 мая 2025 г.
Опубликована online:	23 мая 2025 г.

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WOS:001493133700001

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