Presence of surface vanadium peroxo-oxo umbrella structures in supported vanadium oxide catalysts: fact or fiction?
J Am Chem Soc
; 132(36): 12559-61, 2010 Sep 15.
Article
em En
| MEDLINE
| ID: mdl-20731392
ABSTRACT
Recent debates over the active site structure of supported vanadia/silica catalysts have suggested the existence of a surface vanadium peroxo-oxo "umbrella" structure. This study definitively demonstrates with Raman and UV-vis spectroscopy that the surface vanadia peroxo-oxo umbrella-like structure is not present for both hydrated and dehydrated supported vanadia catalysts such as supported vanadia on silica. The vanadia peroxo-oxo umbrella structure, however, is present in vanadium haloperoxidase (VHPOs) enzymes and metal-organic compounds designed to mimic VHPOs.
Texto completo:
1
Base de dados:
MEDLINE
Assunto principal:
Compostos de Vanádio
Idioma:
En
Ano de publicação:
2010
Tipo de documento:
Article