Chabazite-type molecular sieve, its synthesis and its use in...

Details Chabazite-type molecular sieve, its synthesis and its use in... Chabazite-type molecular sieve, its synthesis and its use in...

C - Chemistry, Metallurgy

01

B

C01B 39/00 (2006.01) B01J 29/00 (2006.01) C01B 39/02 (2006.01) C01B 39/48 (2006.01)

Patent

CA 2547895

The synthesis of a crystalline material, in particular a high silica zeolite, having a chabazite-type framework is aided by the addition to the synthesis mixture of seeds of an AEI framework-type material. The chabazite-type product has a relatively small crystal size and exhibits activity and selectivity in the conversion of methanol to lower olefins, especially ethylene and propylene.

La présente invention a trait à la synthèse d'un matériau cristallin, notamment de zéolithe riche en silice, comportant une structure de type chabazite assistée par l'ajout au mélange de synthèse de grains d'un matériau de type à structure AEI. Le produit de type chabazite a une taille relativement petite et présente une activité et une sélectivité dans la conversion de méthanol en oléfines inférieures, particulièrement l'éthylène et le propylène.

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