SOLID-STATE NMR AND POWDER XRD STUDIES OF THE STRUCTURE OF SAPO-40 UPON HYDRATION-DEHYDRATION CYCLES

Authors
LOURENCO JP RIBEIRO MF RIBEIRO FR ROCHA J GABELICA Z
Citation
Jp. Lourenco et al., SOLID-STATE NMR AND POWDER XRD STUDIES OF THE STRUCTURE OF SAPO-40 UPON HYDRATION-DEHYDRATION CYCLES, Journal of the Chemical Society. Faraday transactions, 91(14), 1995, pp. 2213-2215
Citations number
15
Categorie Soggetti
Chemistry Physical","Physics, Atomic, Molecular & Chemical
Journal title
Journal of the Chemical Society. Faraday transactions → ACNP
ISSN journal
09565000
Volume
91
Issue
14
Year of publication
1995
Pages
2213 - 2215
Database
ISI
SICI code
0956-5000(1995)91:14<2213:SNAPXS>2.0.ZU;2-#
Abstract
Upon hydration template-free SAPO-40 shows the opening of certain Si-O -Al and P-O-Al bonds; although Al-27, P-31 MAS NMR and powder X-ray di ffraction (XRD) suggest that this effect is completely reversible on d ehydration, Si-29 MAS NMR indicates that the local silicon environment s are not fully restored.