Improvements in coatings

Details Improvements in coatings Improvements in coatings

B - Operations, Transporting

01

J

B01J 37/02 (2006.01) B01J 29/08 (2006.01) B01J 29/70 (2006.01) B01J 35/04 (2006.01)

Patent

CA 2353585

A substrate, such as a plate or catalyst monolith, may be coated with a metal oxide, particularly with a zeolite, by treating the substrate with a polyectrolyte to form a coating, and then depositing the coating of metal oxide from an aqueous slurry. A continuous coating, which may incorporate many layers, can easily be formed. In the examples polyacrylamide is used as polyelectrolyte.

Un substrat, tel qu'une plaque ou un monolithe catalythique, peut être revêtu d'un oxyde métallique, et en particulier d'un zéolite, par le traitement dudit substrat avec un polyélecrolyte de façon à former un revêtement, puis par la déposition du revêtement d'oxyde métallique à partir d'une suspension épaisse aqueuse. Un revêtement continu, qui peut comporter plusieurs couches, peut être formé aisément. Dans les exemples, un polyacrilamide est utilisé comme polyélectrolyte.

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