A New Approach to the Preparation of Stable Oxide-Composite Cobalt–Samarium Catalysts for the Production of Hydrogen by Dry Reforming of Methane

Dedov, A.G.; Loktev, A.S.; Arkhipova, V.A.; Bykov, M.A.; Sadovnikov, A.A.; Cherednichenko, K.A.; Shandryuk, G.A.

Авторы: Dedov A.G., Loktev A.S., Arkhipova V.A., Bykov M.A., Sadovnikov A.A., Cherednichenko K.A., Shandryuk G.A.
Журнал: Processes
Том: 11
Номер: 8
Год издания: 2023
Издательство: MDPI
Местоположение издательства: Basel, Switzerland
Номер статьи: 2296
DOI: 10.3390/pr11082296
Аннотация: A new approach to preparing a series of Co/Sm2O3 catalysts for hydrogen production bythe dry reforming of methane has been developed. The catalyst precursors were synthesized with asimple method, including the evaporation of aqueous solutions of cobalt and samarium nitrates,followed by a short-term calcination of the resulting material. The as-prepared and spent catalystswere characterized using X-ray diffraction, scanning electron microscopy, transmission electron microscopy,temperature-programmed reduction, and thermogravimetric analysis. The content of cobaltin the synthesized materials affects their phase composition and carbonization resistance in thedry reforming of the methane reaction. It has been shown that preheating in N2 atmosphere producescatalysts that provide a stable yield of hydrogen and CO of 94–98% for at least 50 h at 900 °C.These yields are among the highest currently available for the dry reforming of methane catalystsmade from Co-Sm complex oxides. It has been established that the decrease in the amount of cobaltin the catalyst and its preheating to an operating temperature of 900 °C in a nitrogen flow help toprevent the carbonization of the catalyst and the sintering of metal particles.
Добавил в систему: Быков Михаил Арнольдович

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A New Approach to the Preparation of Stable Oxide-Composite Cobalt–Samarium Catalysts for the Production of Hydrogen by Dry Reforming of Methaneстатья

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