Development of precipitated iron Fischer-Tropsch catalysts. Quarterly technical progress report, 1 October 1995--31 December 1995

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Two stirred tank slurry reactor tests of catalysts with nominal compositions 100 Fe/3Cu/4 K/2 Ca/16 SiO{sub 2} (run SB-3115) and 100 Fe/5 Cu/6 K/24 SiO{sub 2} (run SA-3155) were completed under task 5, The Effect of Source of Potassium and Basic Oxide Promoter, during the reporting period. Our assessment of the effects of addition of CaO promoter to our baseline catalysts B and C and the use of potassium silicate as the source of potassium promoter is as follows: in general, the addition of CaO promoter did not result in improved performance of the baseline catalysts; the use of CaO ... continued below

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44 p.

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Bukur, D.B. February 14, 1996.

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Description

Two stirred tank slurry reactor tests of catalysts with nominal compositions 100 Fe/3Cu/4 K/2 Ca/16 SiO{sub 2} (run SB-3115) and 100 Fe/5 Cu/6 K/24 SiO{sub 2} (run SA-3155) were completed under task 5, The Effect of Source of Potassium and Basic Oxide Promoter, during the reporting period. Our assessment of the effects of addition of CaO promoter to our baseline catalysts B and C and the use of potassium silicate as the source of potassium promoter is as follows: in general, the addition of CaO promoter did not result in improved performance of the baseline catalysts; the use of CaO promoter may be best suited for operation at higher reaction pressures; the baseline procedure utilizing impregnation of Fe-Cu-SiO{sub 2} precursor with aqueous solution of KHCO{sub 3} as the source of potassium promoter is the preferred method of preparation; and the procedure which utilizes aqueous K{sub 2}SiO{sub 3} solution as the source of potassium also provides satisfactory results, and may be used as an alternative. A slurry reactor test (run SB-3425) was completed during the reporting period, following the catalyst pretreatment with H{sub 2} at 250{degrees}C for 4 h (Task 6. Pretreatment Effect Research). This pretreatment resulted in higher catalyst activity than our baseline procedure (H{sub 2} at 240{degrees}C for 2 h) but also higher methane and gaseous hydrocarbon selectivities (about 10-20% higher).

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44 p.

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OSTI as DE96010121

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  • Other Information: PBD: 14 Feb 1996

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  • Other: DE96010121
  • Report No.: DOE/PC/93069--7
  • Grant Number: AC22-94PC93069
  • DOI: 10.2172/224371 | External Link
  • Office of Scientific & Technical Information Report Number: 224371
  • Archival Resource Key: ark:/67531/metadc667448

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  • February 14, 1996

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  • June 29, 2015, 9:42 p.m.

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  • Nov. 30, 2015, 7:30 p.m.

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Bukur, D.B. Development of precipitated iron Fischer-Tropsch catalysts. Quarterly technical progress report, 1 October 1995--31 December 1995, report, February 14, 1996; United States. (digital.library.unt.edu/ark:/67531/metadc667448/: accessed September 21, 2017), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.