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An in-situ X-ray Diffraction Study of the Desorption of TiCl3-doped Sodium Alanate

Published online by Cambridge University Press:  01 February 2011

Scott A. Speakman ,
Joachim H. Schneibel  and
Dewey S. Easton
Scott A. Speakman
Affiliation:
Metals & Ceramics Division, Oak Ridge National Laboratory Oak Ridge, TN 37831–6064, USA
Joachim H. Schneibel
Affiliation:
Metals & Ceramics Division, Oak Ridge National Laboratory Oak Ridge, TN 37831–6064, USA
Dewey S. Easton
Affiliation:
Metals & Ceramics Division, Oak Ridge National Laboratory Oak Ridge, TN 37831–6064, USA
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Abstract

Sodium alanate was milled with and without TiCl3. The hydrogen release and uptake was measured during temperature-programmed absorption and desorption, as well as by isothermal charging and discharging, using a Sieverts' type apparatus. These data were supplemented by in-situ X-ray diffraction studies of hydrogen desorption. Rate constants derived from XRD were slower than those derived from volumetric H2 measurements. Al formation observed in XRD exceeded that expected from the observed decomposition of NaAlH4 and Na3AlH6.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 837: Symposium N – Materials for Hydrogen Storage – 2004 , 2004 , N3.3
Copyright
Copyright © Materials Research Society 2005

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References

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