Method for drying and storing activated aluminum fine particles
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United States of America Patent
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Apr 10, 2007
Grant Date -
Jan 4, 2007
app pub date -
Aug 20, 2005
filing date -
Aug 27, 2004
priority date (Note) -
Expired
status (Latency Note)
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Abstract
The object is to provide a method for drying and storing activated aluminum fine particles which can be a hydrogen source for fuel cells for a long term without being deactivated. A thermal shock treatment as an activation of the aluminum fine particles, which repeats rapid heating and cooling, is performed to aluminum fine particles obtained by milling aluminum alloy; moisture contained in the activated aluminum fine particles is filtrated; said aluminum fine particles are pre-frozen; and the aluminum fine particles are freeze-dried and then stored in nitrogen atmosphere or vacuum-packed.
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