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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mso-level-tab-stop:1.5pc; mso-level-number-position:left; margin-left:1.5pc; text-indent:-1.5pc;} ol {margin-bottom:0pc;} ul {margin-bottom:0pc;} --> 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.
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