Method and apparatus for achieving maximum yield in the electrolytic preparation of group IV and V hydrides
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United States of America Patent
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Nov 26, 2013
Grant Date -
Aug 16, 2012
app pub date -
Aug 12, 2011
filing date -
Apr 13, 2006
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Abstract
A method for generating hydride gas of metal M1 in electrochemical cell comprising cathode comprising metal M1, sacrificial anode comprising metal M2, an initial concentration of aqueous electrolyte solution comprising metal hydroxide M3OH, wherein the sacrificial metal anode electrochemically oxidizes in the presence of the aqueous electrolyte solution to form metal salt, and hydride gas of metal M1 is formed by reducing the metal M1 of the cathode. The method also comprises steps of determining solubility profile curves of metal salt as M3OH is consumed and metal oxide is formed by oxidation reaction at various concentrations of M3OH; determining the maximum concentration of M3OH that does not yield a concentration of metal salt that precipitates out of the electrolyte solution; and choosing a concentration of M3OH that is in the range of at and within 5% less than the maximum concentration of M3OH to be the initial concentration of M3OH.
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