Synthesis of ZSM-12 zeolite
AssigneeMobil Oil Corporation
InventorGuenter H. Kuehl
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Abstract
There is disclosed a process for preparing a ZSM-12 crystalline zeolite wherein the organic template used in the synthesis has the formula: ##STR1## wherein n=4,5,6 or 10. The template, designated herein DABCO-C.sub.n -diquat, is obtained from a dihalide salt of the template or from a hydroxide thereof.
Claims8
A process for preparing a siliceous porous crystalline ZSM-12 zeolite material having the X-ray diffraction pattern of Table II, which comprises preparing a reaction mixture comprised of sources of an alkali or alkaline earth metal, alumina, silica, RN.sup.+ and water, and having the following composition, in terms of mole ratios of oxides:
- ______________________________________ OH.sup.- /YO.sub.2 = 0.10 to 0.40 RN.sup.+ /(RN.sup.+ +M) = 0.2 to 0.95 H.sub.2 O/OH.sup.- = 20 to 300 YO.sub.2 /W.sub.2 O.sub.3 = 60 to 5000 ______________________________________
- wherein Y is silicon or germanium, (RN).sub.2.sup.2+ is DABCO-C.sub.n -diquat, having the formula:
- ##STR5## wherein n is 4,5,6 or 10, M is an alkali or alkaline earth metal, and W is aluminum or gallium, and maintaining the mixture at crystallization conditions until crystals of said zeolite are formed.
Dependencies are inferred from the claim text.