CINDECA   05422
CENTRO DE INVESTIGACION Y DESARROLLO EN CIENCIAS APLICADAS "DR. JORGE J. RONCO"
Unidad Ejecutora - UE
artículos
Título:
MÖSSBAUER AND XPS SPECTROSCOPIES STUDIES OF SMSI EFFECT ON Fe/Nb2O5 CATALYSTS FOR THE FISCHER-TROPSCH SYNTHESIS
Autor/es:
M. V. CAGNOLI, A.M. ALVAREZ, N.G. GALLEGOS, J.F. BENGOA, C.D. DUARTE DE SOUZA, M. SCHMAL AND S.G. MARCHETTI.
Revista:
APPLIED CATALYSIS A-GENERAL
Editorial:
Elsevier
Referencias:
Año: 2007 vol. 326 p. 113 - 113
ISSN:
0926-860X
Resumen:
In order to study if the SMSI effect produces benefitial results on the Fischer–Tropsch (FT) reaction using the Fe/Nb2O5  system we prepared two catalysts by reduction at two different temperatures. The solids were characterized by Mössbauer spectroscopy, XRD, XPS, N2 adsorption, atomic absorption, CO chemisorption and volumetric oxidation. It was demonstrated that the support is partially reduced leading to a covering of the Fe0 crystals by NbOx  species. At the higher reduction temperature studied (773 K) this effect produced a very important activity decrease, an increase in methane production and a shift of the product distribution towards to higher molecular weight hydrocarbons.
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