Actions for Fischer-Tropsch slurry phase process variations. Quarterly report, January 1, 1986-March 31, 1986

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Fischer-Tropsch slurry phase process variations. Quarterly report, January 1, 1986-March 31, 1986

Author
Satterfield, C. N.
Published
United States : [publisher not identified], 1986
Springfield, Va.: National Technical Information Service, [approximately 1986]
Physical Description
microfiche : negative ; 11 x 15 cm
Additional Creators
Hanlon, R. and Matsumoto, D. K.

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Summary
Two principal experiments were conducted, in which synthesis activity, selectivity, and the bulk catalyst composition were monitored for approximately the initial 200 hours on stream. One was performed at 248/sup 0/C (run Fe22) and one at 232/sup 0/C (run Fe27), with an intermediate period at 263/sup 0/C. A third experiment (run Fe24) was conducted at 248/sup 0/C for 22 hours to verify the reproducibility of the initial activity and selectivity results of run Fe22, but no catalyst samples were taken. Four phases of iron were identified in the catalyst, namely ..cap alpha..-Fe, magnetite (Fe3O4), and two forms of iron carbide. The Moessbauer parameters of these phases agree well with data in the literature of the Quarterly Report for October-December 1985. Some significant observations are as follows: First, the methane selectivity was high for the earlier times on stream, (32 mole% methane) for 0 to 7 hours on stream as compared to 27 mole% for 7 to 22 and 22 to 34 hours on stream. Second, the C2-C/sub 7/ product distributions were quite similar for the three time intervals. The value of ..cap alpha.., as determined by the slope of the distribution of the C3-C/sub 7/ products, increased only slightly over time, from a value of 0.62 from 0 to 7 hours to a value of 0.64 from 7 to 22 and 22 to 34 hours. Finally, the C/sub 8/-C/sub 14/ fraction increased significantly with time, reflecting the effect of the accumulation and eventual saturation of heavier hydrocarbon products in the reactor. 9 figs. 7
Report Numbers
DE86009567; DOE/PC/80015-2
Other Subject(s)
Collection
NTIS collection.
Note
DOE contract number: AC22-85PC80015
OSTI Identifier 5965816
Research organization: Massachusetts Inst. of Tech., Cambridge (USA).
View MARC record | catkey: 47364445