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Issue 10, 2016
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An elaborate structure investigation of the chiral polymorph A-enriched zeolite beta

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Abstract

Polymorph A-enriched zeolite beta was hydrothermally synthesized from an extremely concentrated system using tetraethylammonium hydroxide (TEAOH) as an organic structure-directing agent (OSDA) in the presence of fluoride. The sample was investigated by powder X-ray diffraction (XRD), 29Si magic angle spinning nuclear magnetic resonance (MAS NMR), 19F MAS NMR, and high-resolution transmission electron microscopy (HRTEM). The polymorph A enrichment was confirmed by the characterization, and the percentage of polymorph A was determined to be approximately 66% by DIFFaX simulation and HRTEM analyses. A pure polymorph A stacking area was detected by HRTEM, and the chiral structure of polymorph A in the zeolite beta was investigated on the basis of the HRTEM images.

Graphical abstract: An elaborate structure investigation of the chiral polymorph A-enriched zeolite beta

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Publication details

The article was received on 07 Jan 2016, accepted on 03 Feb 2016 and first published on 03 Feb 2016


Article type: Paper
DOI: 10.1039/C6CE00043F
CrystEngComm, 2016,18, 1782-1789

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    An elaborate structure investigation of the chiral polymorph A-enriched zeolite beta

    M. Tong, D. Zhang, L. Zhu, J. Xu, F. Deng, R. Xu and W. Yan, CrystEngComm, 2016, 18, 1782
    DOI: 10.1039/C6CE00043F

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