Hydrogenation active sites of unsupported molybdenum sulfide catalysts forhydroprocessing heavy oils

Citation
Y. Iwata et al., Hydrogenation active sites of unsupported molybdenum sulfide catalysts forhydroprocessing heavy oils, CATAL TODAY, 65(2-4), 2001, pp. 335-341
Citations number
14
Language
INGLESE
art.tipo
Article
Categorie Soggetti
Physical Chemistry/Chemical Physics
Journal title
CATALYSIS TODAY
ISSN journal
0920-5861 → ACNP
Volume
65
Issue
2-4
Year of publication
2001
Pages
335 - 341
Database
ISI
SICI code
0920-5861(20010220)65:2-4<335:HASOUM>2.0.ZU;2-S
Abstract
The purpose of the present study was to elucidate the nature of the hydroge nation active sites on unsupported molybdenum sulfide catalysts, aimed at t he improvement of the catalysts for the slurry processes. The number of hyd rogenation active sites was found to relate to the "inflection" on the basa l plane of the catalyst particles. The comparison of the catalytic activity to that of an oil-soluble catalyst in the hydroprocessing of heavy oils su ggests that the performance of the oil-soluble catalyst was near the maximu m, unless another component such as Ni or Co was incorporated. (C) 2001 Els evier Science B.V. All rights reserved.