Technology development for iron Fischer-Tropsch catalysis. Quarterly technical progress report No. 4, July 1, 1995--September 30, 1995

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The affect of copper promotion on the activity and selectivity of hydrogen pretreated, precipitated iron Fischer-Tropsch catalysts was studied. Fischer-Tropsch synthesis was carried out in the slurry phase in one in one liter continuous stirred tank reactors at a space velocity of 3.lNL h{sup {minus}1} g{sup {minus}1}(Fe), H{sub 2}:CO = 0.7 at either 270{degree}C or 230{degree}C. Catalysts with atomic compositions relative to iron of 10OFe/4.4Si/l.OK and 10OFe/4.4Si/2.6Cu/l.OK were used at 270{degree}C and catalysts with the compositions of 100Fe/4.4Si/4.2K and 10OFe/4.4Si/2.6Cu/4.2K were used at 230{degree}C. XRD and Moessbauer spectroscopy both show that the 10OFe/4.4Si/2.6Cu/l.OK catalyst contained approximately 24% {alpha}-Fe with the ... continued below

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43 p.

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Davis, B.H. January 9, 1996.

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The affect of copper promotion on the activity and selectivity of hydrogen pretreated, precipitated iron Fischer-Tropsch catalysts was studied. Fischer-Tropsch synthesis was carried out in the slurry phase in one in one liter continuous stirred tank reactors at a space velocity of 3.lNL h{sup {minus}1} g{sup {minus}1}(Fe), H{sub 2}:CO = 0.7 at either 270{degree}C or 230{degree}C. Catalysts with atomic compositions relative to iron of 10OFe/4.4Si/l.OK and 10OFe/4.4Si/2.6Cu/l.OK were used at 270{degree}C and catalysts with the compositions of 100Fe/4.4Si/4.2K and 10OFe/4.4Si/2.6Cu/4.2K were used at 230{degree}C. XRD and Moessbauer spectroscopy both show that the 10OFe/4.4Si/2.6Cu/l.OK catalyst contained approximately 24% {alpha}-Fe with the remainder Fe{sub 3}O{sub 4} after a 24 h pretreatment with hydrogen at 220{degree}C. Copper promotion was found to substantially increase the activity and productivity of the catalysts. Catalysts promoted with copper reached maximum activity within 100 h of synthesis while catalysts with no copper went through an induction period. The activity of the hydrogen pretreated 10OFe/4.4Si/2.6Cu/1.0K catalyst operated at 270{degree}C was comparable to the activity of the the 100Fe/4.4Si/l.OK catalyst after pretreatment with carbon monoxide or syngas at one atmosphere pressure. However, the activity of the hydrogen pretreated 1O0Fe/4.4Si/2.6Cu/4.2K catalyst at 230{degree}C was found to be substantially lower than the same catalyst pretreated with carbon monoxide or syngas at one atmosphere pressure.

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43 p.

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OSTI as DE96009836

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  • Other Information: PBD: 9 Jan 1996

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  • Other: DE96009836
  • Report No.: DOE/PC/94055--T4
  • Grant Number: AC22-94PC94055
  • DOI: 10.2172/225068 | External Link
  • Office of Scientific & Technical Information Report Number: 225068
  • Archival Resource Key: ark:/67531/metadc673283

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  • January 9, 1996

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  • June 29, 2015, 9:42 p.m.

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Davis, B.H. Technology development for iron Fischer-Tropsch catalysis. Quarterly technical progress report No. 4, July 1, 1995--September 30, 1995, report, January 9, 1996; United States. (digital.library.unt.edu/ark:/67531/metadc673283/: accessed October 16, 2018), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.