ITQ-54 [electronic resource] : a multi-dimensional extra-large pore zeolite with 20 × 14 × 12-ring channels
- Argonne, Ill. : Argonne National Laboratory, 2015. and Oak Ridge, Tenn. : Distributed by the Office of Scientific and Technical Information, U.S. Dept. of Energy
- Physical Description:
- pages 480-485 : digital, PDF file
- Additional Creators:
- Argonne National Laboratory and United States. Department of Energy. Office of Scientific and Technical Information
- Restrictions on Access:
- Free-to-read Unrestricted online access
- 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 the N-cyclohexylisoindolinium cation. Its structure was solved by 3D rotation electron diffraction (RED) from crystals of ca. 1 μm in size. The structure of ITQ-54 contains straight intersecting 20 × 14 × 12-ring channels along the three crystallographic axes and it is one of the few zeolites with extra-large channels in more than one direction. ITQ-54 has a framework density of 11.1 T atoms per 1000 Å<sup>3</sup>, which is one of the lowest among the known zeolites. ITQ-54 was obtained together with GeO<sub>2</sub> as an impurity. A heavy liquid separation method was developed and successfully applied to remove this impurity from the zeolite. ITQ-54 is stable up to 600 °C and exhibits permanent porosity. The structure was further refined using powder X-ray diffraction (PXRD) data for both as-made and calcined samples.
- Published through SciTech Connect., 01/01/2015., Chemical Science 6 1 ISSN 2041-6520; CSHCBM AM, and Jiang, Jiuxing; Yun, Yifeng; Zou, Xiaodong; Jorda, Jose; Corma, Avelino.
- Funding Information:
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