Proton conducting membranes for hydrogen production and separation
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United States of America Patent
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Dec 27, 2016
Grant Date -
Jan 29, 2015
app pub date -
Sep 30, 2014
filing date -
Jun 10, 2008
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Abstract
In one embodiment, a membrane of proton-electron conducting ceramics that is useful for the conversion of a hydrocarbon and steam to hydrogen has a porous support coated with a film of a Perovskite-type oxide. By including the Zr and M in the oxide in place of Ce, the stability can be improved while maintaining sufficient hydrogen flux for efficient generation of hydrogen. In this manner, the conversion can be carried out by performing steam methane reforming (SMR) and/or water-gas shift reactions (WGS) at high temperature, where the conversion of CO to CO2 and H2 is driven by the removal of H2 to give high conversions.
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