MODIFICATION OF SUPPORTED TRANSITION METALS CATALYSTS BY ADDING TETRA n-BUTYLTIN

GERARDO F. SANTORI; MONICA L. CASELLA; NORA N. NICHIO; MARISA MARTURANO; MARTA LLADO; GUILLERMO SIRI; OSMAR FERRETTI

The Journal of Argentine Chemical Society

Asociacion Quimica Argentina

Año: 1999 vol. 87 p. 155 - 164

1852-1207

In this work, supported transition metals catalysts modified by tetra n-butyltin in the presence of hydrogen are studied. It is demonstrated that this methodology, derived from the Surface Organometallic Chemistry on Metals, allows to control the nature of the active phase specifically formed. This active phase is dependent of the temperature at which it is activated in hydrogen: below 423 K, organobimetallic supported phases can be obtained, having a good selectivity to cinnamyl alcohol in the hydrogenation of cinnamaldehyde. For higher activation temperatures (773 K), the organic fragments are totally eliminated, obtaining bimetallic systems with particular properties in the isobutane dehydrogenation to isobutene and in the CO2 reforming of methane to synthesis gas.