INCAPE   05401
INSTITUTO DE INVESTIGACIONES EN CATALISIS Y PETROQUIMICA "ING. JOSE MIGUEL PARERA"
Unidad Ejecutora - UE
congresos y reuniones científicas
Título:
Study on the activity and selectivity in citral hydrogenation on Pt catalysts promoted by Fe, Sn, Ga, In, or Pb and supported on carbon Vulcan.
Autor/es:
PATRICIA D. ZGOLICZ; JULIETA P. STASSI; OSVALDO A. SCELZA; SERGIO R. DE MIGUEL
Lugar:
Lyon
Reunión:
Congreso; 11th European Congress on Catalysis – EuropaCat-XI; 2013
Institución organizadora:
11th European Congress on Catalysis – EuropaCat-XI
Resumen:
Today, many researchs on carbonaceous materials as catalytic supports have an important impact in different scientific and technological fields . These materials are present in an extensive variety of activated carbons with different physico-chemical properties that making them attractive as catalytic materials for different applications. An example is the development of the transition metallic catalysts supported on carbons for selective hydrogenation reactions of α,β-unsaturated aldehydes to unsaturated alcohols (UA) and the use of them as key step to prepare dif-ferent fine chemical products such as pharmaceulticals, perfumery products and flavors. In this sense, nowadays there is a growing interest in the use of new nanostructured graphitic materials in selective hydrogenation, such as carbon nanotubes and nanofibers, however other graphitic materials like carbon blacks, which have good textural properties to deposit metals and have been widely used as a support to prepare catalysts in other catalytic area, have been less used in this reaction. On the other hand, it is known that the hydrogenation of C=C double bond in ,-unsaturated aldehydes is thermodynamically favored. However, it is possible to change this situation by manipulat-ing of the properties of certain catalysts. For example, the selectivity to UA 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, the catalytic behaviour of Pt-based catalysts supported on Vulcan granular carbon (CV) in the selective hydrogenation of citral (3,7-dimethyl-2,6-octadienal) was studied, since there are not practically reports on the citral hydrogena-tion with noble-metal-based catalysts supported on CV. Besides, taking into account that the Ga, In, and Pb promo-ters have been less studied in this type of reaction, the addition of a second metal (Fe, Sn, Ga, In or Pb) to the active metal (Pt) to favour the hydrogenation of carbonyl group was investigated.