Process for the preparation of synthetic zeolites, and zeolites obtained by said process
AssigneeCompagnie Francaise de Raffinage
InventorsMichel Bourgogne, Jean-Louis Guth, Raymond Wey
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Abstract
The invention relates to the preparation of synthetic zeolites selected from the group formed by chabazite, merlinoite, edingtonite, ZSM 5 and ZSM 11. In accordance with the invention, a zeolite selected from the group formed by mordenite, ferrierite, clinoptilolite and the type X and type Y zeolites is subjected to a treatment with at least one base. The invention further relates to zeolites obtained by said process.
Claims35
A process for the preparation of synthetic ZSM 5 and ZSM 11 zeolites, said process comprising subjecting a zeolite selected from the group consisting of mordenite, ferrierite, clinoptilolite and the type X and type Y zeolites to a single treatment with two bases, the first base being selected from the group consisting of tetrapropylammonium hydroxide and tetrabutylammonium hydroxide, said first base being in mixture with sodium hydroxide as the second base.
Dependencies are inferred from the claim text.