Hydrotreatment activities of supported molybdenum nitrides and carbides

G. M. Dolce, Phillip E. Savage, L. T. Thompson

Research output: Contribution to journalArticle

69 Citations (Scopus)

Abstract

The growing need for alternative sources of transportation fuels encourages the development of new hydrotreatment catalysts. These catalysts must be active and more hydrogen efficient than the current commercial hydrotreatment catalysts. Molybdenum nitrides and carbides are attractive candidate materials possessing properties that are comparable or superior to those of commercial sulfide catalysts. This research investigated the catalytic properties of γ-Al2O3-supported molybdenum nitrides and carbides. These catalysts were synthesized via temperatureprogrammed reaction of supported molybdenum oxides with ammonia or methane/hydrogen mixtures. Phase constituents and compositions were determined by X-ray diffraction, elemental analysis, and neutron activation analysis. Oxygen chemisorption was used to probe the surface properties of the catalysts. Specific activities of the molybdenum nitrides and carbides were competitive with those of a commercial sulfide catalyst for hydrodenitrogenation (HDN), hydrodesulfurization (HDS), and hydrodeoxygenation (HDO). For HDN and HDS, the catalytic activity on a molybdenum basis was a strong inverse function of the molybdenum loading. Product distributions for the HDN, HDO, and HDS of a variety of heteroatom compounds indicated that several of the nitrides and carbides were more hydrogen efficient than the sulfide catalyst.

Original languageEnglish (US)
Pages (from-to)668-674
Number of pages7
JournalEnergy and Fuels
Volume11
Issue number3
StatePublished - May 1997

Fingerprint

Molybdenum
Nitrides
Carbides
Catalysts
Hydrodesulfurization
Sulfides
Hydrogen
Molybdenum oxide
Hydrogen Sulfide
Neutron activation analysis
Methane
Chemisorption
Chemical analysis
Ammonia
Surface properties
Catalyst activity
Materials properties
Oxygen
X ray diffraction

All Science Journal Classification (ASJC) codes

  • Chemical Engineering(all)
  • Energy Engineering and Power Technology
  • Fuel Technology

Cite this

Dolce, G. M. ; Savage, Phillip E. ; Thompson, L. T. / Hydrotreatment activities of supported molybdenum nitrides and carbides. In: Energy and Fuels. 1997 ; Vol. 11, No. 3. pp. 668-674.
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Hydrotreatment activities of supported molybdenum nitrides and carbides. / Dolce, G. M.; Savage, Phillip E.; Thompson, L. T.

In: Energy and Fuels, Vol. 11, No. 3, 05.1997, p. 668-674.

Research output: Contribution to journalArticle

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