Uzm-8 and uzm-8hs crystalline aluminosilicate zeolitic...

C - Chemistry – Metallurgy – 01 – B

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C01B 39/46 (2006.01) B01J 29/70 (2006.01) B01J 29/88 (2006.01) B01J 29/89 (2006.01) C01B 39/02 (2006.01) C01B 39/06 (2006.01) C01B 39/48 (2006.01)

Patent

CA 2562905

A family of microporous aluminosilicate zeolites and substituted versions thereof which are identified as UZM-8 and UZM-8HS have been prepared. These UZM-8 compositions can be prepared using either only one or more organoammonium cations, such as diethyldimethylammonium or ethyltrimethylammonium cations and optionally an alkali and/or an alkaline earth cation as structure directing agents. The UZM-8 compositions are described by an empirical formula of Mmn+Rrp+Al1-xExSiyOz and have a unique x- ray diffraction pattern. The UZM-8HS are derived from the UZM-8 zeolites and have a lower aluminum content than the UZM-8 compositions. These UZM-8HS are represented by the empirical formula M~m~n+Rr~p+Al(1-x)ExSiy~Oz~ and are prepared by treatments such as acid extraction and AFS treatments. Both the UZM-8 and UZM-8HS are useful in various hydrocarbon conversion processes.

L'invention concerne une famille de zéolites d'aluminosilicates microporeux et de leurs versions substituées qui sont identifiés comme UZM-8 et UZM-8HS. Ces compositions UZM-8 peuvent être préparées avec un seul ou plusieurs cations d'organoammonium tels que les cations de diéthyldiméthylammonium ou d'éthyltriméthylammonium, et éventuellement un cation alcalin et/ou alcalinoterreux, utilisés en tant qu'agents directeurs de structure. Les compositions UZM-8 sont décrites par une formule empirique M¿m??n+¿R¿r??p+¿Al¿1-x?E¿x?Si¿y?O¿z? et possèdent une grille de diffraction unique de rayons x. Les UZM-8HS sont dérivées des zéolites UZM-8 et possèdent une plus faible teneur en aluminium que les compositions UZM-8. Ces UZM-8 sont représentées par la formule empirique M'¿m'??n+¿R¿r'??p+¿Al¿(1-x)?E¿x?Si¿y'?O¿z'? et sont préparées par des traitements tels que l'extraction avec acide ou ASF. Les UZM-8HS et les UZM-8 sont utiles dans de différents processus de conversion d'hydrocarbures.

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