| 摘要 |
A synthetic porous crystalline zeolite having a molar ratio of XO2: Y2O3 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 : <IMAGE> and not having an X-ray diffraction line at an interplanar D-spacing of 6.61 +/- 0.15 Angstrom. The silica/alumina form of this crystalline material may be prepared with a directing agent in the form of a N,N,N,N',N',N'-hexaethylpentane-diammonium compound. Use thereof in the catalytic conversion of organic compounds, especially of hydrocarbons. |
