caa a22 4500 467888469 CHVBK 20180406152741.0 cr unu---uuuuu 170328e20060801xx s 000 0 eng 10.1007/s11144-006-0073-8 doi (NATIONALLICENCE)springer-10.1007/s11144-006-0073-8 Hydrogenation of citral over pt and pt-fe/sio2 catalysts [Elektronische Daten] [Patricio Reyes, and Hugo Rojas] Summary: Pt/SiO2 and Pt-Fe/SiO2 catalysts having a Pt loading ranging from 0.5 to 3.0 wt.% and a fixed amount of Fe in the bimetallic series, 1.0 wt.% have been prepared by the impregnation procedure, followed by calcinations and reduction in H2 flow at 773 K. The samples were characterized by N2 adsorption at 77 K, H2 chemisorption at 298 K, TEM, TPR and XPS. The hydrogenation of citral at 363 K and 8.3 bar over a series of Pt/SiO2 and Pt-Fe/SiO2 catalysts was studied. Thus, the selectivity towards the unsaturated alcohol (geraniol + nerol) decreases at high loads of monometallic Pt. An effect of polarization of the C=O bond due to the presence of Fe3+ species leads to catalysts active and highly selective to the hydrogenation of the carbonyl bond. Characterization results showed that Pt is present as Pto and Fe mainly asFe3+. Springer-Verlag/Akadémiai Kiadó, 2006 hydrogenation nationallicence citral nationallicence Pt/SiO2 nationallicence selective nationallicence Reyes Patricio Departamento de Física-Química, Facultad de Ciencias Químicas, Universidad de Concepción, Casilla 160-C, Concepción, Chile aut Rojas and Hugo Escuela de Química, Facultad de Ciencias, Grupo de Catálisis (GC-UPTC), Universidad Pedagógica y Tecnológica de Colombia, Tunja, Colombia aut Reaction Kinetics and Catalysis Letters Kluwer Academic Publishers 88/2(2006-08-01), 363-369 0133-1736 88:2<363 2006 88 11144 https://doi.org/10.1007/s11144-006-0073-8 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/s11144-006-0073-8 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Reyes Patricio Departamento de Física-Química, Facultad de Ciencias Químicas, Universidad de Concepción, Casilla 160-C, Concepción, Chile aut NATIONALLICENCE 700 1- Rojas and Hugo Escuela de Química, Facultad de Ciencias, Grupo de Catálisis (GC-UPTC), Universidad Pedagógica y Tecnológica de Colombia, Tunja, Colombia aut NATIONALLICENCE 773 0- Reaction Kinetics and Catalysis Letters Kluwer Academic Publishers 88/2(2006-08-01), 363-369 0133-1736 88:2<363 2006 88 11144 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer