Hydrodemetallation of a vanadylporphyrin over sulfided NiMoγAl2O3, MoγAl2O3, and γAl2O3 catalysts - effect of the vanadium deposit on the toluene hydrogenation.

✍ Scribed by S. Dejonghe; R. Hubaut; J. Grimblot; J.P. Bonnelle; T. Des Courieres; D. Faure

• Publisher: Elsevier Science
• Year: 1990
• Tongue: English
• Weight: 851 KB
• Volume: 7
• Category: Article
• ISSN: 0920-5861
• DOI: 10.1016/0920-5861(90)80009-e

✦ Synopsis

The toluene hydrogenation performances of MO-and NiMo-A1203 hydrotreating catalysts are modified by vanadium deposited through HDM of the Vanadylporphyrin.

Bulk deposited vanadium sulfide of mean VS 1 .l stoichiometry does not greatly affect the intrinsic performances of the initial catalysts but it appears that a part of the deposited vanadium replaces Ni in the NiMoS phase and acts as a promoter of the supported MoS2