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

Abstract

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 andmore » the characterization of the precursor, as well as of the resulting catalysts.« less

Authors:
; ; ;  [1];  [2]
  1. Inst. de Recherches sur la Catalyse, Villeurbanne (France)
  2. Elf-France, Saint Symphorien d'Ozon (France)
Publication Date:
OSTI Identifier:
6915775
Resource Type:
Journal Article
Journal Name:
Journal of Catalysis; (United States)
Additional Journal Information:
Journal Volume: 135:1; Journal ID: ISSN 0021-9517
Country of Publication:
United States
Language:
English
Subject:
37 INORGANIC, ORGANIC, PHYSICAL AND ANALYTICAL CHEMISTRY; 02 PETROLEUM; CATALYSTS; CHEMICAL PREPARATION; MOLYBDENUM; CATALYTIC EFFECTS; PETROLEUM; HYDROCRACKING; VANADIUM SULFIDES; DEMETALLIZATION; DENITRIFICATION; DESULFURIZATION; HYDROGENATION; NICKEL COMPLEXES; REDUCTION; VANADIUM COMPLEXES; CHALCOGENIDES; CHEMICAL REACTIONS; COMPLEXES; CRACKING; DECOMPOSITION; ELEMENTS; ENERGY SOURCES; FOSSIL FUELS; FUELS; METALS; PYROLYSIS; SEPARATION PROCESSES; SULFIDES; SULFUR COMPOUNDS; SYNTHESIS; THERMOCHEMICAL PROCESSES; TRANSITION ELEMENT COMPLEXES; TRANSITION ELEMENT COMPOUNDS; TRANSITION ELEMENTS; VANADIUM COMPOUNDS; 400201* - Chemical & Physicochemical Properties; 020400 - Petroleum- Processing

Citation Formats

Lacroix, M, Guillard, C, Breysse, M, Vrinat, M, and Courieres, T des. Preparation characterization and catalytic properties of unsupported and molybdenum-promoted vanadium sulfides. United States: N. p., 1992. Web. doi:10.1016/0021-9517(92)90288-S.
Lacroix, M, Guillard, C, Breysse, M, Vrinat, M, & Courieres, T des. Preparation characterization and catalytic properties of unsupported and molybdenum-promoted vanadium sulfides. United States. https://doi.org/10.1016/0021-9517(92)90288-S
Lacroix, M, Guillard, C, Breysse, M, Vrinat, M, and Courieres, T des. Fri . "Preparation characterization and catalytic properties of unsupported and molybdenum-promoted vanadium sulfides". United States. https://doi.org/10.1016/0021-9517(92)90288-S.
@article{osti_6915775,
title = {Preparation characterization and catalytic properties of unsupported and molybdenum-promoted vanadium sulfides},
author = {Lacroix, M and Guillard, C and Breysse, M and Vrinat, M and Courieres, T des},
abstractNote = {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.},
doi = {10.1016/0021-9517(92)90288-S},
url = {https://www.osti.gov/biblio/6915775}, journal = {Journal of Catalysis; (United States)},
issn = {0021-9517},
number = ,
volume = 135:1,
place = {United States},
year = {1992},
month = {5}
}