Estudio de la hidrogenación de furfural con catalizadores de PtSn obtenidos via QOMS/M

ANDREA B. MERLO; GERARDO F. SANTORI; MÓNICA L. CASELLA; OSMAR A. FERRETTI

Buenos Aires, Argentina

Congreso; XXII Interamerican Congress of Chemical Engineering and V Congreso Argentino de Ingeniería Química; 2006

Asociación Argentina de Ingenieros Químicos-Confederación Interamericana de Ingeniería Química

The liquid phase hydrogenation of furfural is studied, employing silica supported platinum catalysts, modified by tin. Tin is introduced by means of Surface Organometallic Chemistry on Metals (SOMC/M) techniques, giving rise to the so called PtSn-OM and PtSn-BM systems. Using mild reaction conditions (10 bar H2 and 373 K), the monometallic catalyst Pt/SiO2 was not very active. PtSn-BM and PtSn-OM catalysts allowed to obtain furfuryl alcohol with high selectivity and a good activity. These results are explained by means of the promote effect of ionic Sn and the dilution of platinum metallic sites, favoring the adsorption and activation of the furfural molecule through the C=O group. In PtSn-OM catalyst, the presence of SnBux fragments on the surface, generates a beneficial steric effect. In PtSnBM catalysts, the reaction showed a zerothorder dependence with respect to furfuraldehyde. The hydrogen concentration dependence was 0.65 order.