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US 6,143,162 AGranted
Process for separating oxygen from a gaseous mixture containing it and device for practicing this process
AssigneeL'Air Liquide, Societe Anonyme pour l'Etude et l'Exploitation des Procedes Georges Claude
InventorsJean-Claude Boivin, Pascal Del Gallo, Jacques Fouletier, Michel Kleitz, Philippe Labrune, Gilles Lagrange, Gaetan Mairesse, Guy Nowogrocki, Marlu Cesar Steil
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Abstract
Process for separating oxygen from a gas mixture containing it employs a solid-electrolyte electrochemical cell, where the cell includes a homogeneous structure of one or more BIMEVOX derivatives, with dynamic electrodes created "in situ" that are reversible and self-adaptive, and at least two current collectors.
Claims10
Process for separating oxygen from a gas mixture containing oxygen, comprising the step of:
- reducing oxygen brought in on a cathode into O.sup.2- ions and transferring the O.sup.2- ions into oxygen on an anode by employing a solid-electrolyte electrochemical cell having a homogeneous structure consisting of one or more BIMEVOX derivatives, with dynamic electrodes created "in situ" that are reversible and self-adaptive, and at least two current collectors wherein BIMEVOX derivatives are defined by formula
- (Bi.sub.2-x M.sub.x O.sub.2)(V.sub.1-y M'.sub.y O.sub.z) (I)
- in which:
- M represents one or more metals substituting for bismuth, this (or these) being chosen from those having an oxidation number of less than or equal to 3;
- M' represents one or more elements substituting for vanadium, this (or these) being chosen from those having an oxidation number of less than, equal to or greater than 5, the limiting values of x, y, and therefore z, depending on the nature of the substituting elements M and M'.
2 more elements
Dependencies are inferred from the claim text.