Observation of a 390-nm emission band associated with framework Ti in mesoporous titanosilicates

Authors
Corma, A Garcia, H Navarro, MT Palomares, EJ Rey, F
Citation
A. Corma et al., Observation of a 390-nm emission band associated with framework Ti in mesoporous titanosilicates, CHEM MATER, 12(10), 2000, pp. 3068-3072
Citations number
18
Categorie Soggetti
Apllied Physucs/Condensed Matter/Materiales Science","Material Science & Engineering
Journal title
CHEMISTRY OF MATERIALS
ISSN journal
08974756 → ACNP
Volume
12
Issue
10
Year of publication
2000
Pages
3068 - 3072
Database
ISI
SICI code
0897-4756(200010)12:10<3068:OOA3EB>2.0.ZU;2-M
Abstract
A mesoporous titanosilicate lacking titanol groups has been prepared by exh austive OH silylation and characterized by Si-29 NMR, by XANES, and by its catalytic activity for cyclohexene epoxidation. Through a comparison of the luminescence of this silylated Ti-MCM-41 titanosilicate with that of the o riginal Ti-MCM-41 before and after calcination, firm experimental support t hat an emission band appearing at lambda (max) = 390 nm is due to the tetra podal framework Ti(OSi=)(4) is provided.