Catalyst pretreatment in an oxygenate to olefins reaction...

B - Operations – Transporting – 01 – J

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B01J 29/04 (2006.01) B01J 29/85 (2006.01) B01J 37/08 (2006.01) C07C 1/20 (2006.01)

Patent

CA 2399232

Disclosed is a crystalline silicoaluminophosphate molecular sieve comprising a porous framework structure and at least one single ring aromatic compound within the porous framework structure. The silicoaluminophosphate molecular sieve is used to convert oxygenate feedstock to olefin product. The olefin product is high in ethylene and propylene content, with a high selectivity to ethylene. The silicoaluminophosphate molecular sieve can be included with a binder and other materials in finished catalyst form.

La présente invention concerne un tamis moléculaire de silico-aluminophosphates cristallins constitué d'une structure poreuse laquelle renferme au moins un composé aromatique à noyau unique. On utilise ce tamis moléculaire de silico-aluminophosphates pour transformer une charge d'alimentation comprenant des produits oxygénés en oléfines. Les oléfines obtenues présentent une forte teneur en éthylène et en propylène, et sont caractérisées par une sélectivité élevée en faveur de l'éthylène. Par ailleurs, on peut associer le tamis moléculaire de silico-aluminophosphates à un liant et à d'autres matériaux sous une forme de catalyseur finie.

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