Colorant treated ion exchange resins, method of making, heat...

Details Colorant treated ion exchange resins, method of making, heat... Colorant treated ion exchange resins, method of making, heat...

H - Electricity

01

M

H01M 8/04 (2006.01) B01J 47/00 (2006.01) F01P 11/14 (2006.01)

Patent

CA 2578969

Disclosed is a colorant treated ion exchange resin comprising at least 15% of exchangeable groups comprising at least one of an ion, a Lewis acid, or a Lewis base resulting from a colorant having a pKa or pKb of greater than 5 in an aqueous solution at 25~C, based on the total number of exchangeable groups. Also disclosed are heat transfer systems, assemblies, fuel cell systems and methods of maintaining a conductivity of less than 200 ~S/cm in a heat transfer fluid that employ the disclosed colorant treated ion exchange resins. Finally, a method of making the disclosed colorant treated ion exchange resins is provided.

L'invention concerne une résine échangeuse d'ions traitée par colorant renfermant au moins 15 % de groupes échangeables qui renferment au moins un ion, un acide de Lewis, ou une base de Lewis provenant d'un colorant qui présente un pKa ou pKb supérieure à 5 en solution aqueuse à 25 °C, par rapport au nombre total de groupes échangeables. L'invention concerne aussi des systèmes de transfert thermique, des ensembles, des systèmes de pile à combustible et des procédés permettant de maintenir une conductivité inférieure à 200 ?S/cm dans un fluide caloporteur, qui font appel aux résines décrites. Enfin, on décrit un procédé d'élaboration de ces résines.

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