Cyclodextrin-assisted low-metal Ni-Pd/Al<sub>2</sub>O<sub>3</sub> bimetallic catalysts for the direct amination of aliphatic alcohols - CNRS - Centre national de la recherche scientifique Accéder directement au contenu
Article Dans Une Revue Journal of Catalysis Année : 2018

Cyclodextrin-assisted low-metal Ni-Pd/Al2O3 bimetallic catalysts for the direct amination of aliphatic alcohols

Résumé

This paper reports the use of β-cyclodextrin as a pre-shaping agent for the preparation of low-metal xNi-yPd/Al2O3 catalysts (x = 2, 5 wt% and y = 0.2, 0.5, 1.0 wt%) targeting the direct amination of 1-octanol with ammonia. Six different preparation methods were used aiming at tuning the Ni-Pd interaction. The catalysts were finely characterized by XRD, H2-TPR, CO pulse chemisorption, STEM-EELS/EDS-SDD and XPS, while the elementary interaction between Ni-Pd-cyclodextrin was assessed by marrying ESI-MS experiments with DFT calculations. Among the different methods studied, the most outstanding effect was obtained when β-cyclodextrin was pre-adsorbed on γ-Al2O3 before impregnating the Ni and Pd nitrate precursors. At such conditions, the best formulation (5Ni-0.5Pd/Al-CD_M4) afforded 90% conversion and 71% yield to 1-octylamine (TON = 93) in the amination of 1-octanol with ammonia at 160 °C for 4 h, which places it among the most active and selective Ni catalysts reported in the literature
Fichier principal
Vignette du fichier
J_Catal _2018_A PONCHEL_postprint.pdf (2.4 Mo) Télécharger le fichier
Origine : Fichiers produits par l'(les) auteur(s)

Dates et versions

hal-01901874 , version 1 (13-11-2023)

Identifiants

Citer

Ajay Tomer, Bright Kusema, Jean-François Paul, Cédric Przybylski, Eric Monflier, et al.. Cyclodextrin-assisted low-metal Ni-Pd/Al2O3 bimetallic catalysts for the direct amination of aliphatic alcohols. Journal of Catalysis, 2018, 368, pp.172 - 189. ⟨10.1016/j.jcat.2018.10.002⟩. ⟨hal-01901874⟩
93 Consultations
16 Téléchargements

Altmetric

Partager

Gmail Facebook X LinkedIn More