Citral hydrogenation over Rh and Pt catalysts supported on TiO2: Influence of the preparation and activation protocols of the catalysts - Archive ouverte HAL Accéder directement au contenu
Article Dans Une Revue Journal of Molecular Catalysis A: Chemical Année : 2011

Citral hydrogenation over Rh and Pt catalysts supported on TiO2: Influence of the preparation and activation protocols of the catalysts

Résumé

During citral hydrogenation, the products distribution obtained on Rh/TiO2 and Pt/TiO2 catalysts depends on their preparation and activation protocols: (i) the unsaturated alcohols (the intended products) are formed in higher quantity on samples reduced at 500 degrees C and more notably with Pt/TiO2 catalyst; (ii) samples prepared by impregnation of the metallic precursor salt in HCl medium and activated at 300 degrees C are the only ones to lead to the formation of isopulegol as by-product. On the catalysts activated at 500 degrees C, these results can be explained by the presence of the SMSI effect beneficial to hydrogenate selectively the C=O bond of citral towards unsaturated alcohols.

Domaines

Catalyse

Dates et versions

hal-01342641 , version 1 (06-07-2016)

Identifiants

Citer

Tchirioua Ekou, Lynda Ekou, Aurélie Vicente, Gwendoline Lafaye, Stéphane Pronier, et al.. Citral hydrogenation over Rh and Pt catalysts supported on TiO2: Influence of the preparation and activation protocols of the catalysts . Journal of Molecular Catalysis A: Chemical, 2011, 337 pp.82-88. ⟨10.1016/j.molcata.2011.01.020⟩. ⟨hal-01342641⟩
22 Consultations
0 Téléchargements

Altmetric

Partager

Gmail Facebook X LinkedIn More