Semi-hidrogenación de 1-heptino usando como catalizadores complejos de Pd(II) y Rh(I) disueltos en tolueno o inmovilizados sobre óxido de grafito (GO)

CAGNOLA, E.; LIPRANDI, D.; QUIROGA , M.; PAREDES, J.; MASTALIR Á.; SZABÓ, T.

Viña del Mar – Chile

Congreso; XXII CICAT – Congreso Iberoamericano de Catálisis; 2010

[PdCl2(TDA)2] and [RhCl(TDA)3] (TDA = NH2(CH2)12CH3) were anchored on graphite oxide (GO) by the incipient wetness technique with 2 wt % of metal load. Pure and supported complexes were characterized by Centesimal Composition, FTIR, XPS and XRD. FTIR and XRD revealed that [RhCl(TDA)3] was inmmobilized on the GO surface, while [PdCl2(TDA)2] was also intercalated in the GO layers. The catalaytic behaviour of these systems was researched using the 1-heptyne semi-hydrogenation at mild condition of temperature and pressure as homo/ heterogeneous systems in a batch reactor. Results were compared with those obtained with the Wilkinson catalyst at the same operational conditions. In every case the substrate/metal molar ratio was 125. Activity and selectivity results allowed to conclude that the anchored rhodium(I) complex was the best catalytic system, with a convertion to 1-heptene of 0,73, at 1-heptyne total convertion of 0,99 with a selectivity of 0,81 at 120 min of reaction time.