Improvement of HDS catalysts through the modification of the oxidic precursor with 1,5-pentanediol: Gas phase sulfidation and thiophene conversion - Université de Lille Accéder directement au contenu
Article Dans Une Revue Comptes Rendus Chimie Année : 2016

Improvement of HDS catalysts through the modification of the oxidic precursor with 1,5-pentanediol: Gas phase sulfidation and thiophene conversion

Résumé

The performance, in thiophene HDS, of a CoMo/Al2O3 catalyst was successfully improved through chemical modification of its oxidic precursor by impregnation with 1,5-pentanediol solution. The gas phase activation with a H2/H2S mixture was followed by thermogravimetric analysis coupled with a rapid chromatograph; the catalysts were characterized at different steps of the activation using X-ray photoelectron spectroscopy (XPS). It appeared that the addition of the organic agent retards the sulfidation of the supported metals, leading to a simultaneous sulfidation of Co and Mo atoms. This induces the formation of smaller MoS2 slabs and thus an increase in the number of active CoMoS sites, directly correlated with the better HDS performance of the modified solid. The role of 1,5-pentanediol is likely to inhibit, at low temperature, the adsorption of H2S on the solid and thus the sulfidation of the supported metals.

Domaines

Catalyse
Fichier principal
Vignette du fichier
CRCHIM_2016__19_10_1286_0.pdf (2.85 Mo) Télécharger le fichier
Origine Fichiers éditeurs autorisés sur une archive ouverte

Dates et versions

hal-04554433 , version 1 (22-04-2024)

Licence

Identifiants

Citer

Pascal Blanchard, Naïma Frizi, Soazic Mary, Pascale Baranek, Christine Lancelot, et al.. Improvement of HDS catalysts through the modification of the oxidic precursor with 1,5-pentanediol: Gas phase sulfidation and thiophene conversion. Comptes Rendus Chimie, 2016, Comptes Rendus Chimie, 19, pp.1286-1302. ⟨10.1016/j.crci.2016.04.009⟩. ⟨hal-04554433⟩
3 Consultations
0 Téléchargements

Altmetric

Partager

Gmail Mastodon Facebook X LinkedIn More