Solid-State Hydrogen-Generating Composites Based on Sodium Borohydride: Effect of the Heat Treatment of Boron–Cobalt Catalysts on the Hydrogen Generation Rate

O. V. Netskina, O. V. Komova, I. P. Prosvirin, A. A. Pochtar’, A. M. Ozerova, V. I. Simagina

Результат исследования: Научные публикации в периодических изданияхстатья

4 Цитирования (Scopus)

Аннотация

Calcined boron–cobalt catalysts, prepared by reduction of cobalt chloride in an aqueous sodium borohydride solution, were applied as components of pelletized solid-state H 2-generating composites based on sodium borohydride. The ferromagnetic catalyst consists of amorphous spherical particles with a mean size of 20 nm, coated with an oxygen-containing shell. A study of the 2 evolution kinetics on adding these formulations into H 2O showed that the heat treatment of the catalyst at 230°С did not affect its performance and the calcination at 500°С and 730°С resulted in a significant decrease in the reaction rate. However, the performance for the catalytic systems studied in hydrolysis of sodium borohydride, calculated per 1 sq cm of the sample surface area, was approximately the same, 0.96 ± 0.12 cu cm of H 2/min. This indicate that the H 2 generation rate in hydrolysis of sodium borohydride correlated with the specific surface area of the catalyst, which is determined by morphological and chemical transformations during calcination.

Язык оригиналаанглийский
Страницы (с-по)1666-1673
Число страниц8
ЖурналRussian Journal of Applied Chemistry
Том90
Номер выпуска10
DOI
СостояниеОпубликовано - 1 окт 2017

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