Preparation of zeolite bound by MFI structure type zeolite and use thereof
AssigneeExxon Chemical Patents Inc.
InventorsJohannes P. Verduijn, deceased, Machteld Maria Mertens, Wilfried Jozef Mortier
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Abstract
The preparation of zeolite bound zeolite comprising zeolite core crystals other than MFI structure zeolite which are bound by MFI structure type zeolite and the use of the zeolite bound by MFI structure type zeolite prepared by the process as an adsorbent or as a catalyst for hydrocarbon conversion. The zeolite bound zeolite is produced by including seed crystals of MFI structure type zeolite into the silica bound aggregate forming mixture and then converting the silica binder of the aggregate to the MFI binder crystals. The resulting zeolite bound zeolite has good strength and integrity.
Claims21
A process for preparing a zeolite bound zeolite which does not contain significant amounts of non-zeolitic binder, which process comprises:
- aging a silica-bound aggregate containing zeolite other than MFI structure type zeolite and an amount of seed crystals of MFI structure type which were added to the mixture used to form the silica-bound aggregate in an aqueous ionic solution containing a sufficient amount of hydroxy ions to convert the silica binder to the MFI structure type binder and optionally a template.
Dependencies are inferred from the claim text.