New catalysts for coal processing [electronic resource] : Metal carbides and nitrides. Third semiannual report, July 17, 1996--January 17, 1996
- Washington, D.C. : United States. Dept. of Energy, 1997.
Oak Ridge, Tenn. : Distributed by the Office of Scientific and Technical Information, U.S. Dept. of Energy.
- Physical Description:
- 7 pages : digital, PDF file
- Additional Creators:
- United States. Department of Energy and United States. Department of Energy. Office of Scientific and Technical Information
- Restrictions on Access:
- Free-to-read Unrestricted online access
- Unsupported molybdenum nitride (Mo₂N) and molybdenum carbide supported on alumina (Mo₂C/Al₂O₃) were compared against commercial sulfided MoS₂/Al₂O₃ and Ni-Mo-S/Al₂O₃ for hydrotreating coal-derived gas oil at 633 K (360 °C) and 13.7 MPa (2000 psig). When the catalytic rates were compared on the basis of active sites measured by chemisorption, the nitrides and carbides were estimated to have activities as much as five times that of Ni-Mo-S/Al₂O₃ and MoS₂/Al₂O₃. The comparison was based on sites titrated by CO on the carbide and nitride and by O₂ on the sulfided catalysts. The gas oil product quality from the carbide and nitride catalysts was significantly better than the thermal blank, indicating that the materials were active under practical hydrotreating conditions. X-ray photoelectron spectroscopy analysis after reaction of the Mo₂N and Mo₂C/Al₂O₃ catalysts indicated that surface sulfiding was not extensive.
- Report Numbers:
- E 1.99:doe/pc/95207--t3
- Published through SciTech Connect.
Oyama, S.T.; Cox, D.F.
Virginia Polytechnic Inst. and State Univ., Blacksburg, VA (United States)
- Funding Information:
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