INCAPE   05401
INSTITUTO DE INVESTIGACIONES EN CATALISIS Y PETROQUIMICA "ING. JOSE MIGUEL PARERA"
Unidad Ejecutora - UE
congresos y reuniones científicas
Título:
Sulfur Resistance of Low-loaded Pt Catalysts
Autor/es:
CAROLINA BETTI; JUAN M. BADANO; NICOLÁS CARRARA; CECILIA R. LEDERHOS; MARÍA JULIANA MACCARRONE; LUCIANO PROFUMATI; CARLOS R. VERA; ÁGNES MASTALIR; MÓNICA E. QUIROGA
Lugar:
Lyon
Reunión:
Congreso; XIth European Congress on Catalysis; 2013
Resumen:
In the petrochemical industry gasoline and BTX (Benzene, toluene and xylenes) streams coming from the cracking of petroleum cuts must be purified in order to minimize the concentration of olefins and diolefins. The widespread method of purification is the selective hydrogenation of vinyllic compounds, keeping the aromatic rings unaltered [1].The objective of this work is to extend this research to the reaction system of the bimetallic Pt-W/-alumina catalyst and the model feedstock of styrene contaminated with thiophene. The influence of the order of impregnation of bimetallic Pt?W catalysts on their activity and sulfur resistance during styrene semi-hydrogenation was studied. The order of impregnation of W and Pt in W-Pt/Al catalysts is important for determining the sulfur resistance of the final material. The higher sulfur resistance of WPt/Al would come from the higher amount of surface chlorine(electronic and geometrical effects). On the other hand PtW/Al and Pt/Al, had lower chlorine contents and higher concentrations of Pt0, so they had an enhanced capacity for the strong adsorption of thiophene, and are deactivated.