Method for preparation of small zeotype crystals
AssigneeHaldor Topsoe A/S
InventorsHaldor F. A. Topsøe, Claus J. H. Jacobsen, Michael Brorson, Claus Madsen, Iver Schmidt
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Abstract
A method for the preparation of small zeotype crystals with controlled sizes comprising the steps of synthesizing inside a porous material having a majority of pores less than 1000 Å a synthesis gel consisting essentially of (a) a zeotype precursor composition comprising hydratized oxides of Si, Al and P and metal compounds (b) a zeolite template; and heating or autoclaving the porous support material containing synthesis gel, whereby zeotype crystals are formed; and rinsing and drying the porous support material containing zeotype crystals.
Claims12
A method for the preparation of zeotype crystals comprising:
- (a) heating or autoclaving a porous support material containing a synthesis gel under conditions sufficient to form said zeotype crystals within the pores of said porous material,
- (b) rinsing and drying the porous support material containing zeotype crystals;
- wherein the porous support material has a majority of pores which are less than 1000 Å, and the synthesis gel is formed from:
- a precursor composition comprising one or more zeotype precursor sources of Si, Al, P or metals;
- and
- a zeolite template.
Dependencies are inferred from the claim text.