Double oxalates of Rh(III) with Ni(II) and Co(II) – Effective precursors of nanoalloys for hydrocarbons steam reforming

Double oxalates of Rh(III) with Ni(II) and Co(II) – Effective precursors of nanoalloys for hydrocarbons steam reforming Full article

Journal

International Journal of Hydrogen Energy
ISSN: 0360-3199 , E-ISSN: 1879-3487

Output data

Year: 2023, Volume: 48, Number: 59, Pages: 22428-22438 Pages count : 11 DOI: 10.1016/j.ijhydene.2023.01.365

Authors

Zadesenets Andrey V. ¹ , Garkul Ilia A. ¹ , Filatov Evgeny Yu. ¹ , Sukhikh Aleksandr S. ¹ , Plyusnin Pavel E. ¹ , Urlukov Artem S. ^1,2,3 , Uskov Sergey I. ^1,2 , Potemkin Dmitriy I. ^2,3 , Korenev Sergey V. ¹

Affiliations

1	Nikolaev Institute of Inorganic Chemistry, Siberian Branch of the Russian Academy of Science, 630090 Novosibirsk, Russian Federation
2	Boreskov Institute of Catalysis, Siberian Branch of the Russian Academy of Science, 630090 Novosibirsk, Russian Federation
3	Novosibirsk State University, 630090 Novosibirsk, Russian Federation

Funding (2)

1	Russian Science Foundation	22-23-00672
2	Ministry of Science and Higher Education of the Russian Federation	121031700315–2

Heteronuclear coordination compounds of d-metals are suitable single-source precursors for bimetallic nanoalloys, which often show extraordinary catalytic properties due to synergetic effect. In particular, Ni- and Rh-based catalysts are highly effective in low temperature steam reforming processes. Double oxalates of Rh with Ni and Co of the formula {[Rh(H2O)2(C2O4)μ-(C2O4)]2M(H2O)2}·6H2O (M = Ni, Co) were synthesized and structurally characterized. According to thermogravimetric analysis, the complexes decompose completely in He and H2 atmospheres to form corresponding nanoalloys at ∼300 °C. The calcination in O2 atmosphere leads to formation of spinel type mixed oxide. The supported Co–Rh/Al2O3 and Ni–Rh/Al2O3 catalysts were prepared by impregnation of double oxalate complexes in porous support with subsequent calcination and tested in propane low temperature steam reforming in CH4 excess. The Co-containing catalyst showed comparable activity regarding to pure Rh/Al2O3 sample, while bimetallic Ni–Rh/Al2O3 catalyst revealed to be appreciably more active, than monometallic catalysts with higher active component loadings. Rh–Ni catalyst allowed for complete propane conversion at T ≈ 350 °C, whereas for Rh catalyst the temperature was T ≈ 410 °C, and Rh–Co did not reach complete C3H8 conversion at all.

Zadesenets A.V. , Garkul I.A. , Filatov E.Y. , Sukhikh A.S. , Plyusnin P.E. , Urlukov A.S. , Uskov S.I. , Potemkin D.I. , Korenev S.V.
Double oxalates of Rh(III) with Ni(II) and Co(II) – Effective precursors of nanoalloys for hydrocarbons steam reforming
International Journal of Hydrogen Energy. 2023. V.48. N59. P.22428-22438. DOI: 10.1016/j.ijhydene.2023.01.365 WOS Scopus РИНЦ OpenAlex

Accepted:	Jan 30, 2023
Published online:	Feb 18, 2023
Published print:	Jul 12, 2023

Web of science:	WOS:001032776400001
Scopus:	2-s2.0-85148367364
Elibrary:	54110346
OpenAlex:	W4321350189

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