| Abstract |
The influence of the Pt-particle size in the selective citral hydrogenation is analysed. For that, a Pt/Carbon catalyst has been prepared by impregnation of a carbon xerogel and pre-treated in different conditions to obtain particle sizes varying from 3 to 10 nm. The Pt-particle size has been deeply characterized by HRTEM, XRD, XPS and H-2 chemisorption and related with the catalytic performance in each case. Both activity and selectivity to the valuable unsaturated alcohols are favoured for catalysts with increasing Pt-particle size up to around 8 nm, decreasing for larger particles. In this sense, the interaction and transformation of geranial (E-citral) is also favoured regarding neral (Z-citral). (C) 2016 Elsevier B.V. All rights reserved. |
