ITQ-54: a multi-dimensional extra-large pore zeolite with 20 × 14 × 12-ring channels
作者： Jiuxing Jiang , Yifeng Yun , Xiaodong Zou , Jose Luis Jorda , Avelino Corma
DOI: 10.1039/C4SC02577F
关键词:
摘要: A multi-dimensional extra-large pore silicogermanate zeolite, named ITQ-54, has been synthesised by in situ decomposition of the N,N-dicyclohexylisoindolinium cation into N-cyclohexylisoindolinium cation. Its structure was solved 3D rotation electron diffraction (RED) from crystals ca. 1 μm size. The ITQ-54 contains straight intersecting 20 × 14 12-ring channels along three crystallographic axes and it is one few zeolites with more than direction. a framework density 11.1 T atoms per 1000 A3, which lowest among known zeolites. obtained together GeO2 as an impurity. heavy liquid separation method developed successfully applied to remove this impurity zeolite. stable up 600 °C exhibits permanent porosity. further refined using powder X-ray (PXRD) data for both as-made calcined samples.
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