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2004
Interface equilibria
G 6000
Long Term Cycling Behavior of Titanium Doped NaAlH4 Prepared Through SolMediated Milling of NaH and Al with Titanium Dopant Precursors. — The
46- 020 vent
title compound is synthesized by solvent mediated milling of NaH and Al with 2 mol%
of the dopant precursor, Ti(OBu)4 (approximately 95% yield) followed by hydrogenation at 160 °C under 0.1 MPa for up to 100 cycles. The samples are characterized by
powder XRD and hydrogenation/dehydrogenation cycling measurements. A release of
3.4 wt% of hydrogen capacity is obtained in the first dehydrogenation run. In subsequent cycles, the capacity increases and optimum hydrogen storage of about 4.0 wt%
is achieved by the fourth dehydrogenation run. This capacity remains through
40 cycles. Significant decrease in the capacity to 3.5 wt% is observed at the end of the
100th cycle. — (SRINIVASAN, S. S.; BRINKS, H. W.; HAUBACK, B. C.; SUN, D.;
JENSEN*, C. M.; J. Alloys Compd. 377 (2004) 1-2, 283-289; Dep. Chem., Univ.
Hawaii, Honolulu, HI 96822, USA; Eng.) — W. Pewestorf
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