Catalyst dispersion and activity under conditions of temperature-staged liquefaction [electronic resource].

Published:: Washington, D.C. : United States. Dept. of Energy, 1993.
Oak Ridge, Tenn. : Distributed by the Office of Scientific and Technical Information, U.S. Dept. of Energy.
Physical Description:: Pages: (276 pages) : digital, PDF file
Additional Creators:: United States. Department of Energy and United States. Department of Energy. Office of Scientific and Technical Information

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Summary:

This research program involves the investigation of the use of highly dispersed catalyst precursors for the pretreatment of coals by mild hydrogenation. During the course of this effort solvent preswelling of the coal was evaluated as a means of deeply impregnating catalysts into coal, active phases of catalysts under reaction conditions were studied and the impact of these techniques were evaluated during pretreatment and temperature-staged liquefaction. Two coals, a Texas subbituminous and a Utah high volatile A bituminous, were used to examine the effects of solvent swelling pretreatment and catalyst impregnation on conversion behavior at 275[degrees]C, representative of the first, low-temperature stage in a temperature-staged liquefaction reaction. Ferrous sulfate, iron pentacarbonyl, ammonium tetrathiomolybdate, and molybdenum hexacarbonyl were used as catalyst precursors. Without swelling pretreatment, impregnation of both coals increased conversion, mainly through increased yields of preasphaltenes.

Report Numbers:

E 1.99:doe/pc/89877-t1
doe/pc/89877-t1

Subject(s):

Coal, Lignite, And Peat

Other Subject(s):

Note:

Published through SciTech Connect.
02/01/1993.
"doe/pc/89877-t1"
"DE93012402"
Davis, A.; Schobert, H.H.; Mitchell, G.D.; Artok, L.
Pennsylvania State Univ., University Park, PA (United States)

Funding Information:

AC22-89PC89877

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