11 Selective Hydrogenation of Aldehydes and Ketones
369
Fig. 11.6 TEM images of 8.2 nm Pt3Co nanoparticles. a A monolayer assembly. b A multilayer
assembly. c HRTEM image of a single Pt3Co nanoparticle along the [110] zone axis. Inset in b is
a model of truncated octahedron along the [110] zone axis with two vertices in the h001i direction
cutting off from the octahedron. Reproduced with permission from reference [51]. Copyright 2012
Wiley-VCH Verlag GmbH & Co. KGaA, Weinheim
11.4.3 Pt on Metal
Pt NPs (3.0–3.8 nm) deposited on Au@SiO 2 were employed as catalysts for CAL
hydrogenation, leading to the preferential formation of the saturated aldehyde HCAL
(150 °C, 10 bar H 2 ) [53]. A similar result was reported by the same authors in which
they stressed the rate enhancement by the Pt@Au@SiO 2 catalyst compared to other
catalysts in which one component was lacking [54].
369
Fig. 11.6 TEM images of 8.2 nm Pt3Co nanoparticles. a A monolayer assembly. b A multilayer
assembly. c HRTEM image of a single Pt3Co nanoparticle along the [110] zone axis. Inset in b is
a model of truncated octahedron along the [110] zone axis with two vertices in the h001i direction
cutting off from the octahedron. Reproduced with permission from reference [51]. Copyright 2012
Wiley-VCH Verlag GmbH & Co. KGaA, Weinheim
11.4.3 Pt on Metal
Pt NPs (3.0–3.8 nm) deposited on Au@SiO 2 were employed as catalysts for CAL
hydrogenation, leading to the preferential formation of the saturated aldehyde HCAL
(150 °C, 10 bar H 2 ) [53]. A similar result was reported by the same authors in which
they stressed the rate enhancement by the Pt@Au@SiO 2 catalyst compared to other
catalysts in which one component was lacking [54].