INVESTIGADORES
MARCHETTI Sergio Gustavo
congresos y reuniones científicas
Título:
EFFECT OF THE CALCINATION TEMPERATURE ON THE STRUCTURAL PROPERTIES AND CATALYTIC ACTIVITY IN THE Fe/SIO2 SYSTEM.
Autor/es:
N.G GALLEGOS; JF.BENGOA; M.V. CAGNOLI; AM. ALVAREZ; R.C. MERCADER; SG. MARCHETTI
Lugar:
Madrid
Reunión:
Simposio; International Symposium on the Industrial Applications of the Mössbauer Effect; 2004
Resumen:
The structural properties of iron
supported catalysts have strong influence on their activity and selectivity in
the Fischer-Tropsch synthesis. We have studied the influence of the calcination
temperature on the oxide-support interaction degree to reach the highest iron
reducibility in Fe/SiO2 system to obtain the highest catalytic
activity and selectivity. A silica was impregnated with an aqueous iron
solution and it was calcined at 698, 898 and 1098 K. The three precursors were
characterized by Mössbauer Spectroscopy, obtaining different iron oxide species
on the support. They were reduced in H2 to produce three catalysts
characterized by CO Chemisorption, Volumetric Oxidation and Mössbauer
Spectroscopy. The activity and selectivity measurements showed that the
calcination temperature increase led to a lower hydrocarbon production, a
decrease of olefins production and an increase of methane.