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1. (WO1979000933) GAS EXTRACTION
Latest bibliographic data on file with the International Bureau

Pub. No.: WO/1979/000933 International Application No.: PCT/GB1979/000060
Publication Date: 15.11.1979 International Filing Date: 11.04.1979
IPC:
C01B 13/02 (2006.01) ,C25B 1/00 (2006.01) ,C25B 1/02 (2006.01)
C CHEMISTRY; METALLURGY
01
INORGANIC CHEMISTRY
B
NON-METALLIC ELEMENTS; COMPOUNDS THEREOF
13
Oxygen; Ozone; Oxides or hydroxides in general
02
Preparation of oxygen
C CHEMISTRY; METALLURGY
25
ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
B
ELECTROLYTIC OR ELECTROPHORETIC PROCESSES FOR THE PRODUCTION OF COMPOUNDS OR NON- METALS; APPARATUS THEREFOR
1
Electrolytic production of inorganic compounds or non-metals
C CHEMISTRY; METALLURGY
25
ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
B
ELECTROLYTIC OR ELECTROPHORETIC PROCESSES FOR THE PRODUCTION OF COMPOUNDS OR NON- METALS; APPARATUS THEREFOR
1
Electrolytic production of inorganic compounds or non-metals
02
of hydrogen or oxygen
Applicants:
Inventors:
Priority Data:
14752/7814.04.1978GB
Title (EN) GAS EXTRACTION
(FR) EXTRACTION DE GAZ
Abstract:
(EN) An electrochemical cell used to separate gas from a gaseous mixture by reduction of said gas at the cathode (4) and regeneration of said gas at the anode (9) is characterised in that one or more substances formed during the cathodic reduction and/or the anodic regeneration is chemically converted, preferably by catalytic decomposition in a catalytic decomposition compartment (2), to produce further quantities of said gas, the gas formed by both the anodic regeneration in anodic compartment (3) and the chemical conversion in compartment (2) being recovered as the product. In an especially preferred embodiment a plurality of said cells are used in apparatus for extracting oxygen from the air by using a cathode (4) comprising high surface area graphite powder which reduces oxygen to produce peroxyl ions, each cell being further provided, externally of the cathode compartment (1), with means (15) for catalytically decomposing the peroxyl ions produced, suitable catalysts being CoFe2O2 or NiCo2O4.
(FR) Une cellule electrochimique utilisee pour separer un gaz d"un melange gazeux par reduction dudit gaz a la cathode (4) et regeneration dudit gaz a l"anode (9) se caracterise en ce qu"une ou plusieurs substances formees pendant la reduction cathodique et/ou la regeneration anodique est/sont chimiquement convertie(s), de preference par decomposition catalytique dans un compartiment de decomposition catalytique (2), pour produire d"autres quantites dudit gaz, le gaz forme a la fois par regeneration anodique dans le compartiment anodique (3) et conversion chimique dans le compartiment (2) constituant le produit recupere. Dans un mode preferentiel de realisation une pluralite de ces cellules sont utilisees dans un appareil d"extraction de l"oxygene de l"air par utilisation d"une cathode (4) dont la surface est en poudre de graphite qui reduit l"oxygene pour produire des ions peroxyle, chaque cellule etant pourvue en plus, a l"exterieur du compartiment cathode (1), de moyens (15) de decomposition catalytique des ions peroxyle produits; des catalyseurs appropries sont CoFe2O4 ou NiCo2O4.
Designated States:
Publication Language: English (EN)
Filing Language: English (EN)