Improved rhodium electrocatalyst and method of preparation

Details Improved rhodium electrocatalyst and method of preparation Improved rhodium electrocatalyst and method of preparation

C - Chemistry, Metallurgy

25

B

C25B 11/04 (2006.01) B01J 27/045 (2006.01) C01G 55/00 (2006.01) C25B 1/24 (2006.01) H01M 4/92 (2006.01)

Patent

CA 2466362

An improved novel rhodium sulphide catalyst for reduction of oxygen in industrial electrolyzers which is highly resistant towards corrosion and poisoning by organic species, thus making it particularly suitable for use in aqueous hydrochloric acid electrolysis, also when technical grade acid containing organic contaminants is employed. By modifying the method of preparation, the activity and consistency of the catalyst is substantially improved.

L'invention porte sur un nouveau catalyseur amélioré de sulfure de rhodium utilisé dans la réduction de l'oxygène dans des électrolyseurs industriels et qui est extrêmement résistant à la corrosion et à l'empoisonnement des espèces organiques, ce qui le rend particulièrement approprié pour être utilisé dans l'électrolyse de l'acide chlorhydrique aqueux et également lorsqu'on utilise des contaminants organiques contenant un acide technique. En modifiant ce procédé de préparation, on améliore l'activité et la consistance du catalyseur.

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