INCAPE 05401
INSTITUTO DE INVESTIGACIONES EN CATALISIS Y PETROQUIMICA "ING. JOSE MIGUEL PARERA"
Unidad Ejecutora - UE
congresos y reuniones científicas
Título:
Modificación de la tiorresistencia de Pt/Zeolita NaY por incorporación de lantano, praseodimio o samario por diferentes métodos
Autor/es:
Y.B. ARAÚJO; M.G. SOUZA; J.M. GRAU
Lugar:
Buenos Aires, Argentina
Reunión:
Congreso; XVI Congreso Argentino de Catálisis; 2009
Institución organizadora:
Sociedad Argentina de Catálisis
Resumen:
The effect of the addition of La, Pr or Sm on the metallic activity and the thioresistence of Pt supported on NaY zeolite catalyst was studied. The catalysts were evaluated by deshydrogenation reaction of cyclohexane to benzene with a stage of accelerated poisoning and a stage of reactivation with hydrogen. The promoters were incorporated by ion exchange and calcination, in order to analyze the effect of cations or by impregnation to wet incipient and calcinations, to stabilize the respective oxides. The results show that the lanthanides increase the deshydrogenation activity of the Pt and improve their thiorresistence properties and this effect is increased when increase the electronegativity of the promoter. Of all promoters studied, the samarium is the one more suitable and the catalyst preparation by ion exchange turned out to be thioresistence because it produces more efficient interaction Sm-Pt.
