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Pulsed microreactor study of catalyst used in the SYNTHOIL process

Author
Heinze, D. M.
Published
United States : [publisher not identified], 1977.
[Oak Ridge, Tennessee] : [U.S. Atomic Energy Commission], 1977.
Physical Description
microfiche : negative ; 11 x 15 cm

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Summary
In studying the deactivation mechanisms of the Harshaw 0402T cobalt and molybdenum oxide catalyst used in the SYNTHOIL coal liquefaction reactor, a pulsed microreactor with a gas chromatography detection system has been found useful in measuring catalyst activity. Five types of catalyzed reactions important to the SYNTHOIL process were represented in the experiment: hydrodesulfurization (thiophene to C/sub 4/ hydrocarbons), cracking (diphenylmethane to benzene and toluene), dehydrogenation (tetralin and naphthalene), hydrodeoxygenation (m-cresol to toluene), and hydrodenitrogenation (pyrrole to C/sub 4/ hydrocarbons). It has been determined that exposure of the catalyst in the SYNTHOIL reactor definitely lowers activities in these five reactions, particularly in catalyst pellets taken from the middle and outlet of the reactor. Regeneration is effective in restoring used catalyst to levels of activity comparable to new oxide and presulfided catalyst. It was determined that in situ presulfidation resulted in little difference in catalyst activity from that of an externally-presulfided catalyst and a decrease in some cases.
Report Numbers
SAND-77-0687
Other Subject(s)
Collection
U.S. Atomic Energy Commission depository collection.
Note
DOE contract number: EY-76-C-04-0789
OSTI Identifier 7309815
Research organization: Sandia National Lab. (SNL-NM), Albuquerque, NM (United States).
View MARC record | catkey: 47076065