Metallo aluminophosphate molecular sieve with cubic crystal...

Details Metallo aluminophosphate molecular sieve with cubic crystal... Metallo aluminophosphate molecular sieve with cubic crystal...

B - Operations, Transporting

01

J

B01J 29/04 (2006.01) B01J 29/84 (2006.01) C01B 37/06 (2006.01) C01B 37/08 (2006.01) C07C 1/20 (2006.01) C07C 11/02 (2006.01)

Patent

CA 2442399

A catalyst for converting methanol to light olefins along with the process itself are disclosed and claimed. The catalyst is a metalloaluminophosphate molecular sieve having the empirical formula (ELxAlyPz)O2 where EL is a metal such as silicon or magnesium and x, y and z are the mole fractions of EL, Al and P respectively. The molecular sieve has predominantly a plate crystal morphology in which the average smallest crystal dimension is at least 0.1 microns and has an aspect ratio of no greater than 5. Use of this catalyst gives a product with a larger amount of ethylene versus propylene.

La présente invention se rapporte à un catalyseur permettant de convertir du méthanol en oléfines légères ainsi qu'au processus proprement dit. Ce catalyseur est un tamis moléculaire à base de métallo-aluminophosphates présentant la formule empirique (EL¿x?AL¿y?P¿z?)O¿2? où EL est un métal tel que le silicium ou le magnésium et x, y et z sont les fractions molaires respectives de EL, AL et P. Ce tamis moléculaire présente principalement une morphologie cristalline plate dans laquelle la dimension moyenne des cristaux les plus petits est supérieure ou égale à 0,1 micron et possède un rapport de forme inférieur à 5. L'utilisation de ce catalyseur permet d'obtenir un produit contenant une proportion plus importante d'éthylène que de propylène.

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