Polyelectrolyte coated permeable composite material, its...

Details Polyelectrolyte coated permeable composite material, its... Polyelectrolyte coated permeable composite material, its...

B - Operations, Transporting

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B01D 61/36 (2006.01) B01D 67/00 (2006.01) B01D 69/12 (2006.01) B01D 71/02 (2006.01) B01D 71/60 (2006.01) B01D 71/80 (2006.01) C07C 29/76 (2006.01)

Patent

CA 2351747

The invention relates to a polyelectrolyte coated permeable composite material, to a process for preparing this composite material, and to the utilization of this composite material in various processes. For a variety of chemical or physical processes, such as separation processes, for example, polymer based membranes are used. These polymers are relatively unstable to solvents and high temperatures. Against this background, it was an objective of the present invention to provide a polyelectrolyte coated composite material. The composite material of the invention consists predominantly of inorganic components and features high stability to acids and high temperatures. In accordance with the invention, a permeable composite material which has surface charges is coated with at least one polyelectrolyte. An ion conducting composite material prepared in accordance with the invention may be used as a membrane in fuel cells or as a membrane in pervaporation or vapor permeation.

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