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

Abstract

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 (Fe/sub 3/O/sub 4/), 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 C/sub 2/-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 C/sub 3/-C/sub 7/ products,more » 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« less

Authors:
; ;
Publication Date:
Research Org.:
Massachusetts Inst. of Tech., Cambridge (USA)
OSTI Identifier:
5965816
Report Number(s):
DOE/PC/80015-2
ON: DE86009567
DOE Contract Number:  
AC22-85PC80015
Resource Type:
Technical Report
Resource Relation:
Other Information: Portions of this document are illegible in microfiche products
Country of Publication:
United States
Language:
English
Subject:
10 SYNTHETIC FUELS; CATALYSTS; CHEMICAL COMPOSITION; FISCHER-TROPSCH SYNTHESIS; YIELDS; IRON; CATALYTIC EFFECTS; IRON CARBIDES; MAGNETITE; METHANE; CHEMICAL REACTION YIELD; ALKANES; ALKENES; EXPERIMENTAL DATA; HIGH TEMPERATURE; MEDIUM PRESSURE; QUANTITY RATIO; RESEARCH PROGRAMS; SLURRIES; SPECIFICITY; TIME DEPENDENCE; CARBIDES; CARBON COMPOUNDS; CHALCOGENIDES; CHEMICAL REACTIONS; DATA; DISPERSIONS; ELEMENTS; HYDROCARBONS; INFORMATION; IRON COMPOUNDS; IRON ORES; IRON OXIDES; METALS; MINERALS; MIXTURES; NUMERICAL DATA; ORES; ORGANIC COMPOUNDS; OXIDE MINERALS; OXIDES; OXYGEN COMPOUNDS; SUSPENSIONS; TRANSITION ELEMENT COMPOUNDS; TRANSITION ELEMENTS; 090121* - Hydrocarbon Fuels- Chemical Synthesis- (1976-1989)

Citation Formats

Satterfield, C N, Hanlon, R, and Matsumoto, D K. Fischer-Tropsch slurry phase process variations. Quarterly report, January 1, 1986-March 31, 1986. United States: N. p., 1986. Web.
Satterfield, C N, Hanlon, R, & Matsumoto, D K. Fischer-Tropsch slurry phase process variations. Quarterly report, January 1, 1986-March 31, 1986. United States.
Satterfield, C N, Hanlon, R, and Matsumoto, D K. 1986. "Fischer-Tropsch slurry phase process variations. Quarterly report, January 1, 1986-March 31, 1986". United States.
@article{osti_5965816,
title = {Fischer-Tropsch slurry phase process variations. Quarterly report, January 1, 1986-March 31, 1986},
author = {Satterfield, C N and Hanlon, R and Matsumoto, D K},
abstractNote = {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 (Fe/sub 3/O/sub 4/), 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 C/sub 2/-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 C/sub 3/-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},
doi = {},
url = {https://www.osti.gov/biblio/5965816}, journal = {},
number = ,
volume = ,
place = {United States},
year = {Wed Jan 01 00:00:00 EST 1986},
month = {Wed Jan 01 00:00:00 EST 1986}
}

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