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US 4,452,769 AGranted
Method of preparing crystalline zeolite
AssigneeMobil Oil Corporation
InventorsPochen Chu, Guenter H. Kuehl
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Abstract
A method of preparing a zeolite ZSM-12 type crystal which comprises crystallizing substantially pure ZSM-12 from a silica and optimally alumina gel mixture in the presence of a methyltriethylammonium cation, and the ZSM-12 product produced thereby.
Claims3
A method for preparing a zeolite ZSM- 12 type crystalline material which comprises preparing a reaction mixture containing a source of an alkali metal oxide, an oxide of silicon, an oxide of aluminum, methyltriethylammonium ion, and water and having a composition, in terms of mole ratios of oxides, falling within the following ranges:
- SiO.sub.2 /Al.sub.2 O.sub.3 =40 or higher to .infin.
- M.sub.2 O/(MTEA).sub.2 O=0.2 to 2.0
- H.sub.2 O/OH.sup.- =50 to 400
- OH.sup.- /SiO.sub.2 =0.05 to 0.35
- wherein M is an alkali or alkaline earth metal and MTEA.sup.+ is a methyltriethylammonium ion and maintaining said mixture under crystallization conditions until crystals of said zeolite are formed.
2 more elements
Dependencies are inferred from the claim text.