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Issue 36, 2015
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The first zeolite with a tri-directional extra-large 14-ring pore system derived using a phosphonium-based organic molecule

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Abstract

A new germanosilicate zeolite (denoted as ITQ-53) with extra-large pores has been synthesised using tri-tertbutylmethylphosphonium cation as the organic structure directing agent (OSDA). Rotation electron diffraction (RED) was used to identify ITQ-53 from an initially-synthesised sample containing impurities, and to solve its structure. The structure was refined against PXRD data of pure ITQ-53 samples obtained after synthesis optimisation. ITQ-53 is the first example of extra-large pore zeolites with tri-directional interconnected 14 × 14 × 14-ring channels. It is stable up to at least 650 °C. The structure of ITQ-53 changes from monoclinic to orthorhombic upon calcination.

Graphical abstract: The first zeolite with a tri-directional extra-large 14-ring pore system derived using a phosphonium-based organic molecule

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Supplementary files

Article information


Submitted
05 Jan 2015
Accepted
13 Feb 2015
First published
13 Feb 2015

Chem. Commun., 2015,51, 7602-7605
Article type
Communication
Author version available

The first zeolite with a tri-directional extra-large 14-ring pore system derived using a phosphonium-based organic molecule

Y. Yun, M. Hernández, W. Wan, X. Zou, J. L. Jordá, A. Cantín, F. Rey and A. Corma, Chem. Commun., 2015, 51, 7602
DOI: 10.1039/C4CC10317C

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