Moessbauer spectroscopy studies of iron-catalysts used in Fischer-Tropsch (FT) processes. Quarterly technical progress report, April--June, 1994

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Moessbauer spectroscopy investigations were carried out on 16 iron-based catalysts during the period under review. A set of 10 samples subjected to different pretreatments and Fischer-Tropsch synthesis were investigated to understand the effect of reduction in different gas atmospheres on the iron phases formed. Another set of 5 catalysts pretreated in CO and subjected to Fischer-Tropsch synthesis using two kinds of wax viz., (a) a low molecular wt. wax and (b) heavy wax were also studied. Although it is difficult to draw any definite conclusions from the data, some plausible trends are noticed: (1) pretreatment of a catalyst in H{sub ... continued below

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5 p.

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Huffman, G.P. & Rao, K.R.P.M. December 31, 1994.

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Description

Moessbauer spectroscopy investigations were carried out on 16 iron-based catalysts during the period under review. A set of 10 samples subjected to different pretreatments and Fischer-Tropsch synthesis were investigated to understand the effect of reduction in different gas atmospheres on the iron phases formed. Another set of 5 catalysts pretreated in CO and subjected to Fischer-Tropsch synthesis using two kinds of wax viz., (a) a low molecular wt. wax and (b) heavy wax were also studied. Although it is difficult to draw any definite conclusions from the data, some plausible trends are noticed: (1) pretreatment of a catalyst in H{sub 2} leads to the formation of {var_epsilon}-carbide; (2) pretreatment of a catalyst in H{sub 2}/CO leads to the formation of {chi}-carbide; (3) reduction of UCI-1185-149-2ND catalyst in CO leads to the formation of {chi}-carbide; and (4) reduction of DOE catalysts in CO leads to the formation of {var_epsilon}-carbide. Data are presented on the phases found in the various catalysts.

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5 p.

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OSTI as DE96000912

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  • Other Information: PBD: [1994]

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  • Other: DE96000912
  • Report No.: DOE/PC/93066--T2
  • Grant Number: AC22-94PC93066
  • DOI: 10.2172/113891 | External Link
  • Office of Scientific & Technical Information Report Number: 113891
  • Archival Resource Key: ark:/67531/metadc624295

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  • December 31, 1994

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  • June 16, 2015, 7:43 a.m.

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  • Dec. 3, 2015, 12:31 p.m.

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Huffman, G.P. & Rao, K.R.P.M. Moessbauer spectroscopy studies of iron-catalysts used in Fischer-Tropsch (FT) processes. Quarterly technical progress report, April--June, 1994, report, December 31, 1994; United States. (digital.library.unt.edu/ark:/67531/metadc624295/: accessed November 22, 2018), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.