CINDECA 05422
CENTRO DE INVESTIGACION Y DESARROLLO EN CIENCIAS APLICADAS "DR. JORGE J. RONCO"
Unidad Ejecutora - UE
congresos y reuniones científicas
Título:
Espinelas del tipo AB2O4. Efecto del soporte sobre la actividad catalítica de CuFe2O4.
Autor/es:
JULIA TASCA; CLAUDIA QUINCOCES; ANA M. ALVAREZ; ARACELI LAVAT; MARÍA GLORIA GONZÁLEZ
Lugar:
Benalmadena- Malaga- España
Reunión:
Simposio; XXI SICAT; 2008
Institución organizadora:
FISOCAT
Resumen:
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En este trabajo se analiza
el efecto del soporte sobre el comportamiento catalítico de óxidos mixtos de
CuFe2O4 soportados sobre ZSM-5 y Al2O3 para una relación ferrita/ soporte
igual al 30%. La ferrita de Cu soportada fue obtenida por impregnación de los
soportes con solución de nitratos de Cu y Fe, adicionando ácido cítrico, para
temperaturas finales de síntesis entre 150 y 700oC. La combustión de
propano, fue empleada como reacción test. La actividad catalítica se determinó
a temperatura programada en un reactor de flujo a lecho fijo con un caudal de
100 cm3/min conteniendo una mezcla de 4% de oxígeno y 1000 ppm de
propano. El agregado de 500 ppm de NO en la alimentación produjo diferentes
efectos en la reacción. Los catalizadores zeolíticos mostraron ser activos para
la reducción de NO a N2 y la oxidación de propano a CO2.
Las muestras soportadas sobre Al2O3 sólo presentaron
actividad para la oxidación del propano a CO2. Ambos materiales
muestran que la conversión de propano en presencia de NO en la alimentación se
desplaza hacia menores temperatura sugiriendo que la activación del
hidrocarburo es modificada por la presencia de NO.
