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Solvent-Free Synthesis of Nickel Nanoparticles as Catalysts for CO2 Hydrogenation to Methane. / Netskina, Olga V.; Dmitruk, Kirill A.; Paletsky, Alexander A. et al.
In: Catalysts, Vol. 12, No. 10, 1274, 10.2022.Research output: Contribution to journal › Article › peer-review
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TY - JOUR
T1 - Solvent-Free Synthesis of Nickel Nanoparticles as Catalysts for CO2 Hydrogenation to Methane
AU - Netskina, Olga V.
AU - Dmitruk, Kirill A.
AU - Paletsky, Alexander A.
AU - Mukha, Svetlana A.
AU - Pochtar, Alena A.
AU - Bulavchenko, Olga A.
AU - Prosvirin, Igor P.
AU - Shmakov, Andrey G.
AU - Ozerova, Anna M.
AU - Veselovskaya, Janna V.
AU - Mazina, Olga I.
AU - Komova, Oxana V.
N1 - Funding Information: This research was funded by the Ministry of Science and Higher Education of the Russian Federation (project no. 075-15-2020-781). Publisher Copyright: © 2022 by the authors.
PY - 2022/10
Y1 - 2022/10
N2 - The solid-state combustion method was used to prepare nickel-based catalysts for CO2 hydrogenation from [Ni(C3H4N2)6](NO3)2 and [Ni(C3H4N2)6](ClO4)2. These complexes were synthesized by adding nickel nitrate and perchlorate to melted imidazole. The composition and structure of the obtained complexes was confirmed by ATR FTIR, powder XRD, and elemental analysis. The stages of thermal decomposition of the complexes and their kinetic parameters were established. It was found that incomplete gasification of more thermostable Ni(C3H4N2)6](ClO4)2 led to the formation of carbon, nitrogen, and chlorine impurities. According to powder XRD and XPS, the solid products of gasification of both complexes consist of NiO and Ni0 covered with nickel hydroxide and/or a carbonate layer. In the case of the sample prepared from [Ni(C3H4N2)6](ClO4)2, this layer was pronounced. Therefore, it limits the nickel reduction in the reaction medium of CO2 hydrogenation, even at 450 °C. The surface of the sample prepared from [Ni(C3H4N2)6](NO3)2 contains nickel oxide, which is easily reduced. So, the catalyst active phase is already formed at 250 °C in the presence of CO2 and efficiently catalyzes CO2 hydrogenation as the temperature increases. Therefore, [Ni(C3H4N2)6](NO3)2 is a promising precursor for the CO2 hydrogenation catalyst, and its solvent-free synthesis follows Green Chemistry principles.
AB - The solid-state combustion method was used to prepare nickel-based catalysts for CO2 hydrogenation from [Ni(C3H4N2)6](NO3)2 and [Ni(C3H4N2)6](ClO4)2. These complexes were synthesized by adding nickel nitrate and perchlorate to melted imidazole. The composition and structure of the obtained complexes was confirmed by ATR FTIR, powder XRD, and elemental analysis. The stages of thermal decomposition of the complexes and their kinetic parameters were established. It was found that incomplete gasification of more thermostable Ni(C3H4N2)6](ClO4)2 led to the formation of carbon, nitrogen, and chlorine impurities. According to powder XRD and XPS, the solid products of gasification of both complexes consist of NiO and Ni0 covered with nickel hydroxide and/or a carbonate layer. In the case of the sample prepared from [Ni(C3H4N2)6](ClO4)2, this layer was pronounced. Therefore, it limits the nickel reduction in the reaction medium of CO2 hydrogenation, even at 450 °C. The surface of the sample prepared from [Ni(C3H4N2)6](NO3)2 contains nickel oxide, which is easily reduced. So, the catalyst active phase is already formed at 250 °C in the presence of CO2 and efficiently catalyzes CO2 hydrogenation as the temperature increases. Therefore, [Ni(C3H4N2)6](NO3)2 is a promising precursor for the CO2 hydrogenation catalyst, and its solvent-free synthesis follows Green Chemistry principles.
KW - catalyst
KW - CO methanation
KW - nanoparticle
KW - nickel
KW - solid-state combustion
KW - solvent-free synthesis
KW - CO2 methanation
UR - http://www.scopus.com/inward/record.url?scp=85140835160&partnerID=8YFLogxK
UR - https://www.mendeley.com/catalogue/c4ff506c-3f49-3852-bb5a-2e7cad0d54be/
U2 - 10.3390/catal12101274
DO - 10.3390/catal12101274
M3 - Article
AN - SCOPUS:85140835160
VL - 12
JO - Catalysts
JF - Catalysts
SN - 2073-4344
IS - 10
M1 - 1274
ER -
ID: 38655318