Preparation characterization and catalytic properties of unsupported and molybdenum-promoted vanadium sulfides

Journal Article · Fri May 01 00:00:00 EDT 1992 · Journal of Catalysis; (United States)

DOI:https://doi.org/10.1016/0021-9517(92)90288-S· OSTI ID:6915775

Lacroix, M; Guillard, C; Breysse, M; Vrinat, M ^[1]; Courieres, T des ^[2]

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1. Inst. de Recherches sur la Catalyse, Villeurbanne (France)
2. Elf-France, Saint Symphorien d'Ozon (France)

Hydrotreating of light and crude petroleum feedstocks involves hydrogenation of unsaturated materials and sulfur, nitrogen, or oxygen heteroatom removals. These main reactions are catalyzed by Co or Ni-promoted molybdenum or tungsten sulfides supported on alumina. Such catalysts may also be required for treating heavier feedstocks containing organically combined metals. Among the different metals present in the feed, Ni and V are the most important ones, which are mainly associated with naphtenates and porphyrins complexes. Sulfide catalysts can break up these organic complexes but unlike the heteroatom removals, the Ni and V are deposited on the catalyst surface. The hydrodesulfurization (HDS), cracking (CK), and hydrodemetallation (HDM) activities decrease as a function of the extra metal loading. This work has shown that the vanadium concentration may reach 50 wt% and despite this high metal level, the catalyst retains a non-negligible activity. Studies tend to show that the residual activity of spent hydrotreating catalyst may be related to the presence of a mixture of vanadium and molybdenum sulfides with a possible influence of a sublayer of Co or Ni chalcogenides. The aim of this work was to investigate the catalytic properties of molybdenum-promoted vanadium sulfide. Special attention was devoted to the preparation and the characterization of the precursor, as well as of the resulting catalysts.

• OSTI ID: 6915775
• Journal Information: Journal of Catalysis; (United States), Journal Name: Journal of Catalysis; (United States) Vol. 135:1; ISSN 0021-9517; ISSN JCTLA5
• Country of Publication: United States
• Language: English

Related Subjects

02 PETROLEUM
020400 -- Petroleum-- Processing
37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
400201* -- Chemical & Physicochemical Properties
CATALYSTS
CATALYTIC EFFECTS
CHALCOGENIDES
CHEMICAL PREPARATION
CHEMICAL REACTIONS
COMPLEXES
CRACKING
DECOMPOSITION
DEMETALLIZATION
DENITRIFICATION
DESULFURIZATION
ELEMENTS
ENERGY SOURCES
FOSSIL FUELS
FUELS
HYDROCRACKING
HYDROGENATION
METALS
MOLYBDENUM
NICKEL COMPLEXES
PETROLEUM
PYROLYSIS
REDUCTION
SEPARATION PROCESSES
SULFIDES
SULFUR COMPOUNDS
SYNTHESIS
THERMOCHEMICAL PROCESSES
TRANSITION ELEMENT COMPLEXES
TRANSITION ELEMENT COMPOUNDS
TRANSITION ELEMENTS
VANADIUM COMPLEXES
VANADIUM COMPOUNDS
VANADIUM SULFIDES