INCAPE   05401
INSTITUTO DE INVESTIGACIONES EN CATALISIS Y PETROQUIMICA "ING. JOSE MIGUEL PARERA"
Unidad Ejecutora - UE
congresos y reuniones científicas
Título:
“Nuevas formulaciones de catalizadores superácidos para el aprovechamiento de cortes pesados de parafinas”
Autor/es:
J.C. YORI; R.J. GASTALDO; V.M. BENÍTEZ; C.L. PIECK; C.R. VERA; J.M. GRAU
Lugar:
Gramado, Brasil
Reunión:
Simposio; XX Simposio Ibero Americano de Catalisis; 2006
Institución organizadora:
Sociedad Brasilera de Catálisis
Resumen:
The effect of the addition of Pd on the catalytic acitivity and selectivity of Pt/WZ for isomerization-cracking of linear heavy paraffins was assessed using n-octane as model feedstock. A focus was put on obtaining an optimized catalyst with good isomerization activity and minimum cracking in order to get a product with improved RON and a minimum production of light gases. In this work n-octane is used as a probe molecule. The results were compared with those obtained with a Pt/SO4 2--ZrO2 (Pt/SZ) catalyst used as reference. The catalysts were further characterized by means of N2 adsorption, x-ray diffraction, temperature programmed desorption of probe molecules and cyclohexane dehydrogenation. The n-C8 results indicate that the simultaneous addition of Pt and Pd to a WZ catalyst produces a decrease of the total acidity and an increase of the de/hydrogenating capacity as compared to the monometallic Pt/WZ and Pd/WZ cataysts. This efffects allows the tuning of the metal and acid functions of the catalysts, optimizing the balance for the mild isomerization-cracking reaction. In this sense, high values of RON gain were measured in the product and a high C5+ liquid yield was obtained.4 2--ZrO2 (Pt/SZ) catalyst used as reference. The catalysts were further characterized by means of N2 adsorption, x-ray diffraction, temperature programmed desorption of probe molecules and cyclohexane dehydrogenation. The n-C8 results indicate that the simultaneous addition of Pt and Pd to a WZ catalyst produces a decrease of the total acidity and an increase of the de/hydrogenating capacity as compared to the monometallic Pt/WZ and Pd/WZ cataysts. This efffects allows the tuning of the metal and acid functions of the catalysts, optimizing the balance for the mild isomerization-cracking reaction. In this sense, high values of RON gain were measured in the product and a high C5+ liquid yield was obtained.