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Catalytic Properties of Ni3Al Foils for Hydrogen Production

Published online by Cambridge University Press:  26 February 2011

Toshiyuki Hirano
Toshiyuki Hirano*
Affiliation:
HIRANO.Toshiyuki@nims.go.jp, National Institute for Materials Science, Fuel Cell Materilas Center, 1-2-1 Sengen, Tsukuba, 305-0047, Japan, 81-29-859-2545, 81-29-859-2501
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Abstract

We have successfully developed thin foils of boron-free Ni3Al (below 100 μm in thickness) by cold rolling, and recently found that the foils exhibit high catalytic activity for methanol decomposition. A little has been known about catalytic activity in Ni3Al. Even more interestingly, the high catalytic activity appears on flat foils whose surface area is very low. This paper provides a review of the characteristic features of the catalytic properties investigated in my group. Methanol was effectively decomposed into H2 and CO over the foils above 713 K. The production rates of H2 and CO increased with an increase of time during the initial period of reaction, indicating that the Ni3Al foils were spontaneously activated under the reaction conditions. Surface analyses revealed that fine Ni particles dispersed on carbon nanofibers formed on the foils during the reaction. The high catalytic performance of the foils can be attributed to the spontaneous formation of this nanostructure during the reaction.

Keywords

catalyticalloyNi
Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 980: Symposium II – Advanced Intermetallic-Based Alloys , 2006 , 0980-II07-09
Copyright
Copyright © Materials Research Society 2007

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