Bipolar membrane and method for its production

Details Bipolar membrane and method for its production Bipolar membrane and method for its production

B - Operations, Transporting

01

D

B01D 67/00 (2006.01) B01D 61/44 (2006.01) B01D 69/02 (2006.01) C08J 5/22 (2006.01)

Patent

CA 2043583

Disclosed is a bipolar membrane comprising a cation-exchange membrane in which a cation-exchange group present at least at its adhered surface has been ion-exchanged with a heavy metal ion, which is adhered closely to an anion-exchange membrane at a peel strength of not less than 0.2 kg f/25 mm, and having a water-splitting current efficiency of not less than 80% and a water-splitting membrane potential of not more than 2.0 V.

Divulgation d'une membrane bipolaire comprenant une membrane échangeuse de cations, dans laquelle un groupement échangeur de cations, présent au moins à sa surface de contact, a été remplacé par un ion de métal lourd, qui est en contact étroit avec une membrane échangeuse d'anions, ayant une résistance à la séparation supérieure à 0,2 kgf/25 mm, un rendement en courant de décomposition de l'eau supérieur à 80 % et un potentiel de membrane de décomposition de l'eau supérieur à 2,0 V.

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