Zeolite ZSM-57
AssigneeMobil Oil Corporation
InventorsErnest W. Valyocsik, Nancy M. Page, Cynthia T-W. Chu
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Abstract
This invention relates to a synthetic porous zeolite, identified as ZSM-57, a method for its preparation. This crystalline material may have a ratio of XO.sub.2 :Y.sub.2 O.sub.3 of at least 4, wherein X represents silicon and/or germanium and Y represents aluminum, boron, chromium, iron and/or gallium. The silica/alumina form of this crystalline material has a silica to alumina ratio of at least 4 and may be prepared with directing agents which are N,N,N,N',N',N'-hexaethylpentane-diammonium compounds. The crystalline material exhibits a characteristic X-ray diffraction pattern.
Claims11
A synthetic porous crystalline zeolite having a molar ratio of XO.sub.2 :
- Y.sub.2 O.sub.3 of at least 4, wherein X represents silicon and/or germanium and Y represents aluminum, boron, chromium, iron and/or gallium, said porous crystalline zeolite having at least the X-ray diffraction lines as set forth in Table 1 of the specification.
A method for preparing a synthetic porous crystalline zeolite having a molar ratio of XO.sub.2 :Y.sub.2 O.sub.3 of at least 4, wherein X represents silicon and Y represents aluminum, said porous crystalline zeolite having at least the X-ray diffraction lines as set forth in Table 1 of the specification, said method comprising preparing a mixture capable of forming said synthetic porous crystalline material, said mixture containing sufficient sources of alkali metal ions, an oxide of aluminum, an oxide of silicon, water and an organic cation which is the cation of an N,N,N,N.sub.1,N.sub.1,N.sub.1 -hexaethylpentane-diammonium compound, said method further comprising maintaining said mixture under sufficient conditions until said crystalline material is formed.
Dependencies are inferred from the claim text.