Activity of mo(w)s-2/sba-15 catalysts synthesized from simow heteropoly acids in 4,6-dimethyldibenzothiophene hydrodesulfurization - Université de Lille Accéder directement au contenu
Article Dans Une Revue Neftekhimiya / Petroleum Chemistry Année : 2019

Activity of mo(w)s-2/sba-15 catalysts synthesized from simow heteropoly acids in 4,6-dimethyldibenzothiophene hydrodesulfurization

Résumé

Mo(W)/SBA-15 catalysts are prepared using heteropoly acids H4SiMo12O40, H4SiW12O40, and H4SiMo3W9O40. The catalysts in the sulfide form are studied by low-temperature nitrogen adsorption, high-resolution transmission electron microscopy, and X-ray photoelectron spectroscopy. Catalytic properties are tested in the hydrodesulfurization of 4,6-dimethyldibenzothiophene. It is shown that the gas-phase sulfiding of Mo(W)/SBA-15 catalysts leads to increase in the average length of particles and the number of Mo(W)S2 layers in active phase particles compared with liquid-phase sulfiding with the use of dimethyl sulfide. The replacement of a quarter of tungsten atoms with molybdenum ones makes it possible to considerably improve the catalytic activity of the mixed catalyst Mo + W/SBA-15 compared with the monometallic counterparts. This effect can be enhanced due to the use of mixed heteropoly acid H4SiMo3W9O40 as a precursor of the active phase of the MoW/SBA-15 catalyst, which is apparently associated with the formation of MoWS2 active sites.

Domaines

Catalyse
Fichier principal
Vignette du fichier
Kokliu khin Pet Chem 59 (2019) 1293.pdf (1.29 Mo) Télécharger le fichier
Origine : Fichiers produits par l'(les) auteur(s)

Dates et versions

hal-04396740 , version 1 (20-02-2024)

Identifiants

Citer

Aleksandr Kokliukhin, M. S. Nikul'Shina, A. A. Sheldaisov-Meshcheryakov, A. V. Mozhaev, Christine Lancelot, et al.. Activity of mo(w)s-2/sba-15 catalysts synthesized from simow heteropoly acids in 4,6-dimethyldibenzothiophene hydrodesulfurization. Neftekhimiya / Petroleum Chemistry, 2019, Neftekhimiya / Petroleum Chemistry, 59, pp.1293-1299. ⟨10.1134/S0965544119120077⟩. ⟨hal-04396740⟩
7 Consultations
0 Téléchargements

Altmetric

Partager

Gmail Facebook X LinkedIn More