Combination Metal-Based and Hydride-Based Hydrogen Sources and Processes for Producing Hydrogen
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United States of America Patent
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Issued Date -
Nov 6, 2008
app pub date -
Jun 17, 2005
filing date -
Jun 18, 2004
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Abandoned
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Abstract
A metal based hydrogen source contains metal such as Al, Zn, Mg that can react with water to produce hydrogen gas, borohydride such as sodium borohydride, potassium borohydride etc, and hydroxides such as NaOH and KOH etc. The hydrogen generation follows the following processes: First, metal aluminum reacts with water and hydroxide to produce hydrogen gas an heat, at the same time, hydroxide, the stabilizer of sodium borohydride, is consumed; As sodium borohydride is de-stabilized by the consuming of sodium hydroxide, hydrogen gas is produced through hydrolysis reaction of borohydride. The hydrolysis reaction can be accelerated by utilizing the heat that comes from aluminum's reaction with water. At the same time, hydroxides are partly or completely eliminated from the byproduct. The hydrogen gas produced may be used for any purpose.
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