Support effects over the activity and selectivity in the citral hydrogenation on carbon nanotubes-supported platinum catalysts.

PATRICIA D. ZGOLICZ; JULIETA P. STASSI; OSVALDO A. SCELZA; SERGIO R. DE MIGUEL

Glasgow

Congreso; Europacat X; 2011

Since its discovery in 1991 [1], carbon nanotubes have received an increasing scientific interest because of its exceptional physical and chemical properties which make them potential and promising for applications in various areas, such as catalyst supports. On the other hand, the selective hydrogenation of α,-unsaturated aldehydes to unsaturated alcohols is a key step especially in the preparation of various fine chemicals [2]. Although the hydrogenation of C=C double bond is thermodynamically favored, highly selective hydrogenation of C=O double bond can be achieved over some metal supported catalysts. Among other factors, selectivity could be enhanced by the electronic effects of the support, the presence of a second metal, and the metal particle sizes and morphology. In this work, multi-walled carbon nanotubes-supported Pt catalysts were studied to establish the influence of the support surface composition on their performance in the liquid-phase hydrogenation of citral (3,7-dimethyl-2,6-octadienal).