Solid multi-component membranes, electrochemical reactor components, electrochemical reactors and use of membranes, reactor components, and reactor for oxidation reactions
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United States of America Patent
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Dec 25, 2001
Issued Date -
N/A
app pub date -
Jan 26, 2000
filing date -
Mar 13, 1987
priority date (Note) -
Expired
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Abstract
Electrochemical processes using solid gas-impervious membranes are disclosed for gas cleanup by (A) providing an electrochemical cell comprising first and second zones separated by a solid gas-impervious membrane comprising a mixed metal oxide material of a perovskite structure having electron conductivity and oxygen ion conductivity, (B) passing a gas containing N.sub.2 O, NO, NO.sub.2, SO.sub.2, SO.sub.3, or a mixture thereof, in contact with the membrane in the first zone, and (C) passing a gas capable of reacting with oxygen in contact with the membrane in the second zone. More particularly, the mixed metal oxide material of a perovskite structure comprises a combination of elements selected from the group consisting of lanthanides, alkaline earth metals, Y, Sc, Ti, V, Cr, Mn, Fe, Co, Ni, Cu, Zn, Zr, and Nb, oxides thereof, and mixtures of these metals and metal oxides. Advantageously a catalyst is present in the first zone.
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