Double Oxalates of Rh(III) with Cu(II) and Zn(II) – Effective Precursors of Nanoalloys for Hydrogen Production by Steam Reforming of Propane | Sciact - CRIS-система Института катализа

Double Oxalates of Rh(III) with Cu(II) and Zn(II) – Effective Precursors of Nanoalloys for Hydrogen Production by Steam Reforming of Propane Научная публикация

Журнал

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

Вых. Данные

Год: 2024, Том: 82, Страницы: 611-623 Страниц : 13 DOI: 10.1016/j.ijhydene.2024.07.446

Ключевые слова

Rhodium; Oxalato-complexes ;Single crystal X-ray diffraction; Propane steam reforming; Hydrogen

Авторы

Garkul Ilia A. ¹ , Zadesenets Andrey V. ¹ , Filatov Evgeny Yu. ¹ , Baidina Iraida A. ¹ , Plyusnin Pavel E. ¹ , Urlukov Artem S. ^1,2,3 , Potemkin Dmitry I. ^2,3 , Korenev Sergey V. ¹

Организации

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

Информация о финансировании (2)

1	Российский научный фонд	21-73-20203 (121042600285-5)
2	Министерство науки и высшего образования Российской Федерации (с 15 мая 2018)	FWUR-2024-0033

Heteronuclear coordination compounds of d-metals are effective precursors for the production of bimetallic nanoalloys, which, in turn, are widely used in catalysis. Catalysts based on Rh and Cu, as well as Rh and Zn, are highly active in the process of steam reforming of hydrocarbons. Double oxalates of Rh with Cu and Rh with Zn with the general formula [(C2O4)(H2O)2Rh− (μ-C2O4)− M(H2O)2− (μ-C2O4)–Rh (H2O)2(C2O4)]⋅6H2O (M = Cu, Zn) are synthesized and structurally characterized. According to thermogravimetric analysis, the complexes completely decompose in He and H2 atmospheres already at 300 ◦C with the formation of the corresponding nanoalloys in the Cu–Rh and Zn–Rh systems. Calcination in an O2 atmosphere leads to the formation of a mixed oxide with a spinel structure. The Cu–Rh/Ce0.75Zr0.25O2 and Zn–Rh/ Ce0.75Zr0.25O2 catalysts were prepared by impregnation by moisture capacity on a porous support followed by calcination in a hydrogen atmosphere. The obtained catalysts were tested in propane steam reforming for hydrogen production at 300–480 ◦C and WHSV = 10 000–40 000 cm3 h− 1 •gcat − 1 . At these conditions the Cu–Rh/ Ce0.75Zr0.25O2 and Zn–Rh/Ce0.75Zr0.25O2 catalysts demonstrated high selectivity for hydrogen (more than 70 %) compared to the monometallic catalyst Rh/Ce0.75Zr0.25O2 (less than 60%). Bimetallic catalysts make it possible to increase hydrogen productivity by reducing the reaction rate of methanation of carbon oxides, which is achieved due to the presence of Cu and Zn in the catalyst structure.

Garkul I.A. , Zadesenets A.V. , Filatov E.Y. , Baidina I.A. , Plyusnin P.E. , Urlukov A.S. , Potemkin D.I. , Korenev S.V.
Double Oxalates of Rh(III) with Cu(II) and Zn(II) – Effective Precursors of Nanoalloys for Hydrogen Production by Steam Reforming of Propane
International Journal of Hydrogen Energy. 2024. V.82. P.611-623. DOI: 10.1016/j.ijhydene.2024.07.446 WOS Scopus OpenAlex

Поступила в редакцию:	3 апр. 2024 г.
Принята к публикации:	30 июл. 2024 г.
Опубликована online:	3 авг. 2024 г.
Опубликована в печати:	11 сент. 2024 г.

Web of science:	WOS:001288757000001
Scopus:	2-s2.0-85200245563
OpenAlex:	W4401283281

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