INVESTIGADORES
RENTERIA Mario
artículos
Título:
In situ and ex situ XANES study of nanodispersed Mo species in zeolites used in fine chemistry catalysis
Autor/es:
M. RENTERÍA; A. TRAVERSE; O.A. ANUNZIATA; E.J. LEDE; LILIANA PIERELLA; F. G. REQUEJO
Revista:
JOURNAL OF SYNCHROTRON RADIATION
Editorial:
WILEY-BLACKWELL PUBLISHING, INC
Referencias:
Lugar: Londres; Año: 2001 vol. 8 p. 631 - 633
ISSN:
0909-0495
Resumen:
Mo K-edge XANES experiments on Mo-containing zeolites atlow Mo loading (1 and 2 wt% of Mo on H-ZSM-11, H-BETAand H-ZSM-5 catalysts), active in fine chemistry reactions, wereperformed ex situ as function of sample calcination temperaturein air (in the range 773-973 K) or in situ at 873 and 973K underN2 flow. The results showed a 4-fold oxygen coordination for theincorporated Mo species in the activated (dehydrated) state.Combining these results with additional data evidences an almosttotal Mo exchange inside the zeolite channels.
