Toward new coal hydroprocessing and liquefaction catalysts Progress report, April 1984--June 1984.

Toward new coal hydroprocessing and liquefaction catalysts [electronic resource] : Progress report, April 1984--June 1984.

The structure of CoMo/..gamma..-Al/sub 2/O/sub 3/ hydrotreating catalysts has been studied by means of in situ EXAFS for the K-edge of molybdenum during the hydrodesulfurization of benzothiophene at 7.3 MPa and 523 K. The results support the assumption that the active phase can be regarded as a MoS/...

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Bibliographic Details
Online Access: Online Access (via OSTI)
Format: Government Document Electronic eBook
Language:English
Published: Washington, D.C. : Oak Ridge, Tenn. : United States. Office of the Assistant Secretary of Energy for Fossil Energy ; distributed by the Office of Scientific and Technical Information, U.S. Department of Energy, 1989.
Subjects:
Aluminium Oxides.
Structural Chemical Analysis.
Coal Liquefaction.
Catalysts.
Cobalt.
Molybdenum.
Thionaphthenes.
Desulfurization.
Absorption Spectroscopy.
Catalytic Effects.
Coordination Number.
Fourier Transformation.
Molybdenum Sulfides.
Progress Report.
Spectra.
Sulfidation.
Aluminium Compounds.
Chalcogenides.
Chemical Reactions.
Document Types.
Elements.
Heterocyclic Compounds.
Integral Transformations.
Liquefaction.
Metals.
Molybdenum Compounds.
Organic Compounds.
Organic Sulfur Compounds.
Oxides.
Oxygen Compounds.
Refractory Metal Compounds.
Spectroscopy.
Sulfides.
Sulfur Compounds.
Thermochemical Processes.
Transformations.
Transition Element Compounds.
Transition Elements.
Coal, Lignite, And Peat.
Inorganic, Organic, Physical And Analytical Chemistry.
Materials Science.
Description
Summary:The structure of CoMo/..gamma..-Al/sub 2/O/sub 3/ hydrotreating catalysts has been studied by means of in situ EXAFS for the K-edge of molybdenum during the hydrodesulfurization of benzothiophene at 7.3 MPa and 523 K. The results support the assumption that the active phase can be regarded as a MoS/sub 2/ structure. The atomic Co/(Co + Mo) ratio has a strong effect on Mo-S and Mo-Mo coordination numbers as well as on the activity of the catalysts. The most active catalysts seems to be that with the most crystalline active phase. No changes in the structure of the catalysts were observed during reaction and after cooling to room temperature. 12 refs., 7 figs.
Item Description:Published through SciTech Connect.
01/01/1989.
"doe/pc/60782-t6"
"DE89011427"
Boudart, M.
Stanford Univ., CA (USA). Department of Chemical Engineering.
Physical Description:Pages: 28 : digital, PDF file.

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