The role of cobalt hydroxide in deactivation of thin film Co-based catalysts for sodium borohydride hydrolysis

M. Paladini,G.M. Arzac,V. Godinho,D. Hufschmidt,M. C. Jiménez de Haro,A.M. Beltrán,A. Fernández

Applied Catalysis B: Environmental（2017）

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摘要

•Deactivation was studied for a pure Co catalyst prepared by MS for SB hydrolysis.•The formation of B-O based layer detected but not responsible of deactivation.•Cobalt hydroxide and oxyhydroxide formed on catalyst and detached after reaction.•Leaching of soluble cobalt negligible. Little physical thin film detachment.•Same deactivation mechanism occurred for Co-B and Co-C samples.

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关键词

Hydrogen,Sodium borohydride,Co thin film catalyst,Deactivation,Cobalt hydroxide/oxyhydroxide

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