Anode for electrolysis

C - Chemistry – Metallurgy – 25 – B

Patent

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Details

C25B 11/04 (2006.01) C25C 7/02 (2006.01)

Patent

CA 2672862

The invention relates to an anode consisting of a titanium alloy substrate coated with noble metals by thermal decomposition of precursors thereof; the alloy of the substrate includes elements which can be oxidised during the thermal decomposition step, allowing electrical energy savings and a prolonged duration in industrial electrolytic processes. The anode of the invention is for instance suitable for chloralkali electrolysis, allowing to produce chlorine with a lower oxygen content and a lower energy consumption than the anodes of the prior art.

L'invention concerne une anode composée d'un substrat d'alliage de titane recouvert de métaux nobles par décomposition thermique de leurs précurseurs ; l'alliage du substrat comporte des éléments qui peuvent être oxydés pendant l'étape de décomposition thermique, permettant des économies d'énergie électrique et une durée d'activité prolongée dans des procédés électrolytiques industriels. L'anode selon l'invention est par exemple adaptée pour une électrolyse chloroalcaline, et permet de produire du chlore avec une quantité d'oxygène et une consommation d'énergie inférieures à celles des anodes de l'art antérieur.

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