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1. (WO2002018675) PROCESS FOR THE ELECTROLYSIS OF TECHNICAL-GRADE HYDROCHLORIC ACID CONTAMINATED WITH ORGANIC SUBSTANCES USING OXYGEN-CONSUMING CATHODES
Dernières données bibliographiques dont dispose le Bureau international   

N° de publication :    WO/2002/018675    N° de la demande internationale :    PCT/EP2001/010068
Date de publication : 07.03.2002 Date de dépôt international : 31.08.2001
Demande présentée en vertu du Chapitre 2 :    22.03.2002    
CIB :
C25B 1/26 (2006.01)
Déposants : DE NORA ELETTRODI S.P.A. [IT/IT]; Via Dei Canzi, 1 I-20134 Milan (IT).
BAYER AG [DE/DE]; 51368 Leverkusen (DE)
Inventeurs : ALLEN, Robert, J.; (US).
GIALLOMBARDO, James, R.; (US).
CZERWIEC, Daniel; (US).
DE CASTRO, Emory, S.; (US).
SHAIKH, Khaleda; (US).
GESTERMANN, Fritz; (DE).
PINTER, Hans-Dieter; (DE).
SPEER, Gerd; (DE)
Mandataire : KINZEBACH, Werner; Reitstötter, Kinzebach & Partner Sternwartstrasse 4 81679 Munich (DE)
Données relatives à la priorité :
09/654,553 01.09.2000 US
Titre (EN) PROCESS FOR THE ELECTROLYSIS OF TECHNICAL-GRADE HYDROCHLORIC ACID CONTAMINATED WITH ORGANIC SUBSTANCES USING OXYGEN-CONSUMING CATHODES
(FR) PROCESS FOR THE ELECTROLYSIS OF TECHNICAL-GRADE HYDROCHLORIC ACID CONTAMINATED WITH ORGANIC SUBSTANCES USING OXYGEN-CONSUMING CATHODES
Abrégé : front page image
(EN)The present invention relates to a process for electrolysing an aqueous solution of hydrochloric acid to chlorine in an electrochemical cell provided with an anode compartment and a cathode compartment including at least one gas diffusion cathode. The gas diffusion cathode comprises an electrically conductive web provided on at least on side thereof with a coating of a catalyst comprising rhodium sulphide for the electro-reduction of oxygen. The novel catalyst for oxygen reduction has an improved chemical stability towards highly corrosive media and a high electrocatalytic activity in the presence of organic contaminants.
(FR)The present invention relates to a process for electrolysing an aqueous solution of hydrochloric acid to chlorine in an electrochemical cell provided with an anode compartment and a cathode compartment including at least one gas diffusion cathode. The gas diffusion cathode comprises an electrically conductive web provided on at least on side thereof with a coating of a catalyst comprising rhodium sulphide for the electro-reduction of oxygen. The novel catalyst for oxygen reduction has an improved chemical stability towards highly corrosive media and a high electrocatalytic activity in the presence of organic contaminants.
États désignés : AE, AG, AL, AM, AT, AU, AZ, BA, BB, BG, BR, BY, BZ, CA, CH, CN, CO, CR, CU, CZ, DE, DK, DM, DZ, EC, EE, ES, FI, GB, GD, GE, GH, GM, HR, HU, ID, IL, IN, IS, JP, KE, KG, KP, KR, KZ, LC, LK, LR, LS, LT, LU, LV, MA, MD, MG, MK, MN, MW, MX, MZ, NO, NZ, PL, PT, RO, RU, SD, SE, SG, SI, SK, SL, TJ, TM, TR, TT, TZ, UA, UG, UZ, VN, YU, ZA, ZW.
Organisation régionale africaine de la propriété intellectuelle (ARIPO) (GH, GM, KE, LS, MW, MZ, SD, SL, SZ, TZ, UG, ZW)
Office eurasien des brevets (OEAB) (AM, AZ, BY, KG, KZ, MD, RU, TJ, TM)
Office européen des brevets (OEB) (AT, BE, CH, CY, DE, DK, ES, FI, FR, GB, GR, IE, IT, LU, MC, NL, PT, SE, TR)
Organisation africaine de la propriété intellectuelle (OAPI) (BF, BJ, CF, CG, CI, CM, GA, GN, GQ, GW, ML, MR, NE, SN, TD, TG).
Langue de publication : anglais (EN)
Langue de dépôt : anglais (EN)