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The structure of the CAS type zeolite, Cs4[Al4Si20O48] by high-resolution powder neutron diffraction 29Si MAS and NMR

The structure of the CAS type zeolite, Cs4[Al4Si20O48] by high-resolution powder neutron diffraction 29Si MAS and NMR
The structure of the CAS type zeolite, Cs4[Al4Si20O48] by high-resolution powder neutron diffraction 29Si MAS and NMR
The structure Of Cs4[Al4Si20O48] with the zeolite framework type CAS has been refined using high-resolution powder neutron diffraction data. The refined distribution of silicon and aluminium is not random but has aluminium preferentially located on one of the three tetrahedral sites. This result is confirmed by 29Si MAS NMR data from the same material that also indicates that orientated O3Si-O-AlO3 pairs exist in the structure.
neutron diffraction, mas nmr, caesium aluminosilicate, cas
189-196
Hughes, R.W.
b2099056-adee-48d8-a64b-e103f036e1cb
Weller, M.T.
36a60b56-049f-466c-a1d7-39d6b0d85ff4
Hughes, R.W.
b2099056-adee-48d8-a64b-e103f036e1cb
Weller, M.T.
36a60b56-049f-466c-a1d7-39d6b0d85ff4

Hughes, R.W. and Weller, M.T. (2002) The structure of the CAS type zeolite, Cs4[Al4Si20O48] by high-resolution powder neutron diffraction 29Si MAS and NMR. Microporous and Mesoporous Materials, 51 (3), 189-196. (doi:10.1016/S1387-1811(01)00476-0).

Record type: Article

Abstract

The structure Of Cs4[Al4Si20O48] with the zeolite framework type CAS has been refined using high-resolution powder neutron diffraction data. The refined distribution of silicon and aluminium is not random but has aluminium preferentially located on one of the three tetrahedral sites. This result is confirmed by 29Si MAS NMR data from the same material that also indicates that orientated O3Si-O-AlO3 pairs exist in the structure.

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More information

Published date: 2002
Keywords: neutron diffraction, mas nmr, caesium aluminosilicate, cas

Identifiers

Local EPrints ID: 19781
URI: http://eprints.soton.ac.uk/id/eprint/19781
PURE UUID: 2f7ca4c8-cc80-4414-ac8e-1a489834be57

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Date deposited: 20 Feb 2006
Last modified: 08 Jan 2022 01:00

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Contributors

Author: R.W. Hughes
Author: M.T. Weller

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