1.
Angew Chem Int Ed Engl
; 38(15): 2220-2222, 1999 Aug.
Artigo
em Inglês
| MEDLINE
| ID: mdl-10425488
RESUMO
Framework titanium atoms in titanium-substituted silicalite (TS-1) can be identified by UV resonance Raman spectroscopy since the associated Raman bands at 1125, 530, and 490 cm(-1) (see figure) are observed only when the charge transfer transition associated with the framework Ti atoms is excited by a UV laser. Thus, framework Ti atoms can be distinguished from nonframework Ti atoms and other defect sites. This method can be applicable to identifying transition metal atoms in the frameworks of other molecular sieves.