Effect of manufacturing conditions on properties of electroless deposited Co-P/Ni foam catalyst for hydrolysis of sodium borohydride solution

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The effects of the deposition time and coating bath with various pH and temperatures on the deposition rate, hydrogen generation rate per deposited catalyst of 1 g, surface morphology, catalyst particle distribution, and microstructure of electroless deposited Co -P/Ni foam catalysts were investigated. The degree of the effects of the parameters was in the following order: pH > temperature > deposition time. The effects of heat treatment temperature on the durability and catalytic activity were also investigated. Durability increased slightly in response to heat treatment, but hydrogen generation reduced owing to sodium sintering and oxide film formation. The optimum conditions were 12.0 (pH), 50 degrees C (temperature), and 30 mm (deposition time) without heat treatment. The weight percent of the deposited catalyst and hydrogen generation rate per deposited catalyst of 1 g under the optimum conditions were 4.86 wt% and 1.49 L/min g (deposited catalyst), respectively. The apparent activation energy of the catalyst manufactured under the optimum conditions was 46.8 kJ/mol. The manufacturing conditions considerably affected the catalyst properties. Copyright (C) 2012, Hydrogen Energy Publications, LLC. Published by Elsevier Ltd. All rights reserved.
Publisher
PERGAMON-ELSEVIER SCIENCE LTD
Issue Date
2012-11
Language
English
Article Type
Article
Keywords

COBALT-PHOSPHORUS CATALYSTS; HYDROGEN GENERATION; EFFICIENT CATALYST; NABH4 SOLUTION; RU CATALYST; B CATALYST; KINETICS

Citation

INTERNATIONAL JOURNAL OF HYDROGEN ENERGY, v.37, no.21, pp.15925 - 15937

ISSN
0360-3199
DOI
10.1016/j.ijhydene.2012.08.053
URI
http://hdl.handle.net/10203/104549
Appears in Collection
AE-Journal Papers(저널논문)
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