New sodalite frameworks; synthetic tugtupite and a beryllosilicate framework with a 3 : 1 Si : Be ratio
Armstrong, J.A. and Weller, M.T. (2006) New sodalite frameworks; synthetic tugtupite and a beryllosilicate framework with a 3 : 1 Si : Be ratio. Dalton Transactions, (24), 2998-3005. (doi:10.1039/b600579a).
Download
Full text not available from this repository.
Description/Abstract
Compounds of the formula Na-8[Si(6 + y)BeyAl(6 - 2y)O(24)]X-2, with X = Cl and Br, and y = 1, 2 and 3 have been synthesised and structurally characterised by combined powder X-ray and neutron diffraction pro. le analysis. These materials adopt the sodalite framework ( SOD) with the tetrahedral species, BeO4, AlO4 and SiO4, disordered across the framework positions. Na-8[Si8Be2Al2O24]Cl-2, (y = 2), is a synthetic analogue of the naturally occurring semi-precious gemstone tugtupite, while Na-8[Si9Be3O24]X-2, X = Cl and Br represents a new tetrahedral framework stoichiometry with a Si : Be ratio of 3 : 1. Additional characterisation using Si-29 MASNMR, IR spectroscopy and high-temperature, neutron diffraction show that the observed structure - property trends found when modelling sodalite materials can be extended to these new framework compositions.
| Item Type: | Article |
|---|---|
| ISSNs: | 1477-9226 (print) |
| Related URLs: | |
| Keywords: | solid-state nmr, x = cl, crystal-structure, neutron-diffraction, molecular-sieves, zeolite, gallium, spectra, helvite, angle |
| Subjects: | T Technology > TP Chemical technology |
| Divisions: | University Structure - Pre August 2011 > School of Chemistry |
| Item ID: | 44362 |
| Date Deposited: | 01 Mar 2007 |
| Last Modified: | 01 Jun 2011 16:50 |
| Contributors: | Armstrong, J.A. (Author) Weller, M.T. (Author) |
| Date: | 2006 |
| Status: | Published |
| URI: | http://eprints.soton.ac.uk/id/eprint/44362 |
Actions (login required)
 |
View Item |
