Process for making zeolite ZSM-45 with an organocobalt complex
AssigneeMobil Oil Corporation
InventorErnest W. Valyocsik
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Abstract
This invention relates to a method for preparing a synthetic porous crystalline aluminosilicate zeolite, characterized as zeolite ZSM-45. This crystalline material may have a molar ratio of silica to alumina of at least 8. This synthetic zeolite is analogous, in some respects, to the naturally occuring zeolite, levynite. The ZSM-45 zeolite is prepared with a cobalticinium directing agent. ZSM-45 exhibits a characteristic X-ray diffraction pattern.
Claims6
A method for preparing a ZSM-45 aluminosilicate zeolite, said zeolite having the X-ray diffraction pattern as set forth in Table 1 of the specification, said method comprising the steps of
- (i) preparing a mixture capable of forming said aluminosilicate zeolite, said mixture containing sources of alkali metal ions, an oxide of aluminum, an oxide of silicon, a cobalticinium ion and water and having a composition in terms of moles of oxides, falling within the following ranes:
- ______________________________________ SiO.sub.2 /Al.sub.2 O.sub.3 10-30 OH.sup.- /SiO.sub.2 0.005-1.0 Z/SiO.sub.2 0.001-5.0 H.sub.2 O/SiO.sub.2 10-200 R/SiO.sub.2 0.10-3 ______________________________________
- wherein R represents said cobalticinium ion and Z represents said alkali metal ion;
- (ii) maintaining said mixture under sufficient conditions until a crystalline material is formed;
- and
- (iii) recovering the crystalline material from step (ii), wherein said crystalline material is ZSM-45.
Dependencies are inferred from the claim text.