Copper–iron mixed oxide catalyst precursors prepared by glycine-nitrate combustion method for ammonia borane dehydrogenation processes

O. V. Komova, G. V. Odegova, A. M. Gorlova, O. A. Bulavchenko, A. A. Pochtar, O. V. Netskina, V. I. Simagina

Результат исследования: Научные публикации в периодических изданияхстатьярецензирование

7 Цитирования (Scopus)

Аннотация

The influence of the properties of copper ferrite, prepared by the combustion method from glycine-nitrate precursor, on the kinetics of NH3BH3 hydrolysis, thermolysis and hydrothermolysis are presented. As-prepared and annealed samples were studied by X-ray diffraction, scanning electron microscopy, differential dissolution, and attenuated total reflection infrared spectroscopy. It has been shown that in the hydrolysis and hydrothermolysis of NH3BH3, the as-prepared combustion product, which mainly consisted of a cubic spinel Cu0.67Fe2.33O4 with Fe2+ higher content, had the highest activity, as compared with oxides of copper and iron and the annealed samples. According to transmission electron microscopy and X-ray diffraction, in the reaction medium copper ferrite is reduced to nanosized Cu0 and Fe0. This allowed the average rate of H2 evolution per 1 g of the composition to be increased from 30 to 76 ml⋅min−1, as compared with non-catalytic process. The high gravimetric hydrogen capacity (7.3 wt%) was observed at 90 °C.

Язык оригиналаанглийский
Страницы (с-по)24277-24291
Число страниц15
ЖурналInternational Journal of Hydrogen Energy
Том44
Номер выпуска44
DOI
СостояниеОпубликовано - 13 сен 2019

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