Improved membrane

Details Improved membrane Improved membrane

B - Operations, Transporting

01

D

B01D 71/02 (2006.01) B01J 31/02 (2006.01) B01J 37/02 (2006.01)

Patent

CA 2198128

A process for the treatment of zeolite membranes to improve their performance which comprises contacting the membrane with a silicic acid or a mixture of silicic acids, preferably of generic formule of: SinOp(OH)r where n, p and r can vary from n = 1, p = 0, r = 4 in the case of monosilicic acid through to n = 8-12, p = 12-20, r = 8-12, in the case of medium molecular weight silicic acids through to n = 20-32, p = 36-60 and r = 8-20 in the case of a higher molecular weight polymers.

Procédé de traitement de membranes à base de zéolithe, destiné à améliorer le fonctionnement de celles-ci et consistant à mettre en contact la membrane avec un acide silicique ou un mélange d'acides siliciques, de préférence de la formule générale Si¿n?O¿p?(OH)¿r? dans laquelle n, p et r peuvent varier de n=1, p=0, r=4 dans le cas d'acide monosilicique, à n=8-12, p=12-20, r=8-12 dans le cas d'acides siliciques possédant un poids moléculaire moyen, à n=20-32, p=36-60 et r=8-20 dans le cas de polymères possédant un poids moléculaire élevé.

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