Local structure changes of microporous titanosilicate ETS-10 upon acid treatment

Lv, L., Zhou, J. K., Su, F. and Zhao, X. S. (2007) Local structure changes of microporous titanosilicate ETS-10 upon acid treatment. Journal of Physical Chemistry C, 111 2: 773-778. doi:10.1021/jp056107w


Author Lv, L.
Zhou, J. K.
Su, F.
Zhao, X. S.
Title Local structure changes of microporous titanosilicate ETS-10 upon acid treatment
Journal name Journal of Physical Chemistry C   Check publisher's open access policy
ISSN 1932-7447
1932-7455
Publication date 2007-01
Sub-type Article (original research)
DOI 10.1021/jp056107w
Volume 111
Issue 2
Start page 773
End page 778
Total pages 6
Place of publication Washington, DC United States
Publisher American Chemical Society
Language eng
Formatted abstract
In the present work, the local structure changes of microporous titanosilicate ETS-10 upon treatment with citric acid, phosphoric acid, and nitric acid were characterized using XRD, FTIR, Raman, XPS, DR-UV, 29Si MAS NMR, and 1H-29Si CP MAS NMR techniques. The experimental results suggested that regardless of the nature of the acids, the replacement of alkali cations by protons altered the local structure of ETS-10 solid, including partial dissolution of the siliceous matrix and leaching of titanium species from the TiO6 chains. In the meantime, it was observed that the hexacoordinated Ti species of ETS-10 were changed to penta- and/or tetracoordinated ones, generating terminal TiOH groups, accounting for the observed enhancement of photodegradation activity of the acid-treated ETS-10 materials toward phenol compounds. © 2007 American Chemical Society.
Keyword Ray Photoelectron-Spectroscopy
Raman-Spectroscopy
Molecular-Sieve
Quantum Wires
Titanium
Zeolite
Q-Index Code C1
Q-Index Status Provisional Code
Institutional Status Unknown

Document type: Journal Article
Sub-type: Article (original research)
Collections: School of Chemical Engineering Publications
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