INCAPE 05401
INSTITUTO DE INVESTIGACIONES EN CATALISIS Y PETROQUIMICA "ING. JOSE MIGUEL PARERA"
Unidad Ejecutora - UE
artículos
Título:
Ru-Pt catalysts supported on Al2O3 and SiO2─Al2O3 for the selective ring opening of naphthenes
Autor/es:
VICERICH, MARÍA A.; ESPECEL, CATHERINE; BENITEZ, VIVIANA M.; EPRON, FLORENCE; SÁNCHEZ, MARÍA A.; PIECK, CARLOS L.
Revista:
THE CANADIAN JOURNAL OF CHEMICAL ENGINEERING
Editorial:
JOHN WILEY & SONS INC
Referencias:
Año: 2020 vol. 98 p. 749 - 756
ISSN:
0008-4034
Resumen:
Alumina and silica-alumina supported Ru-Pt catalysts were evaluated for the ring opening of naphthenes. Pt, Ru, and Ru-Pt catalysts were prepared by the impregnation of inorganic precursors over γ-alumina and silica-alumina supports. The catalysts were evaluated by temperature programmed reduction (TPR), pyridine temperature programmed desorption (TPD), CO-FTIR, and by test reactions of 33DM1B isomerization, cyclohexane dehydrogenation, cyclopentane hydrogenolysis, and the ring opening of decalin. The strong interaction between the metals (Pt-Ru) was attributed to their reductions occurring simultaneously. The acidity and strength of the acid sites of the monometallic Ru catalyst were higher than those of the monometallic Pt catalyst. The total acidity (Lewis and Brønsted) and the strength of the acid sites were higher for the silica-alumina supported catalysts. The silica-alumina catalysts had 10 times more Brønsted acidity than the γ-alumina ones and an increased activity and selectivity to decalin ring opening products. Supported monometallic Ru had the best performance for the ring opening reaction.
