INVESTIGADORES
YORI Juan Carlos
artículos
Título:
Redox properties and catalytic activity of SO42--ZRO2 catalysts for n-butane isomerization. Role of transition metal cation promoters
Autor/es:
CARLOS R. VERA; JUAN C. YORI; JOSÉ M. PARERA
Revista:
APPLIED CATALYSIS A-GENERAL
Editorial:
ELSEVIER SCIENCE BV
Referencias:
Lugar: Amsterdam; Año: 1998 vol. 167 p. 75 - 84
ISSN:
0926-860X
Resumen:
SO42− ZrO2 catalysts promoted with cations of transition metals (Fe, Cu, Ni, W, Pt, Co, Zn, Cd, Cr) were studied. Their influence on the catalytic activity for the isomerization of n-butane was analyzed in the presence of electron donor (H2) and electron acceptor (O2, CO2) gases. A new reaction scheme accounts for the one electron properties of the sulfate-zirconia catalyst. Transition metal cations are postulated to enhance activity through d-orbital interaction. Cations with a complete d level inhibit activity, but the presence of electron acceptor molecules (O2 and CO2) in the reacting medium attenuated this deleterious effect.
