Supported iron catalysts for slurry phase Fischer-Tropsch synthesis Academic Article

abstract

• The present study was undertaken to investigate reduction and catalytic behavior of silica and alumina-supported iron Fischer-Tropsch (F-T) catalysts promoted with potassium and copper. It was found that the alumina (Vista Catapal B) inhibits reduction of iron, whereas the reduction behavior of the silica (Davison Grade 952) supported catalyst was similar to that of the two precipitated iron catalysts synthesized in our laboratory. Supported and precipitated (Fe/Cu/K/SiO2) catalysts were tested in a stirred tank slurry reactor. Initial activity of the silica-supported catalyst, measured by a value of an apparent first-order reaction rate constant, was 20-40% higher than that of the precipitated iron catalysts, whereas the activity of the alumina-supported catalyst was about 50% less than that of the silica-supported catalyst. Silica-supported catalyst had higher gaseous selectivity and lower olefin content than the alumina-supported catalyst and precipitated catalysts. These results were explained in terms of interactions between potassium with supports, resulting in reduction of the potassium promotion effectiveness. 2002 Elsevier Science B.V. All rights reserved.

authors

• Bukur, Dragomir

published proceedings

• APPLIED CATALYSIS A-GENERAL

author list (cited authors)

• Bukur, D. B., & Sivaraj, C.

citation count

• 81

complete list of authors

• Bukur, DB||Sivaraj, C

publication date

• May 2002

publisher

• Elsevier  Publisher

published in

• Applied Catalysis A: General  Journal

keywords

• Fischer-tropsch Synthesise
• Isothermal Reduction Behavior
• Slurry Reactor
• Supported And Precipitated Iron Catalysts
• Tpr Characterization

Digital Object Identifier (DOI)

• 10.1016/S0926-860X(02)00053-4

start page

• 201

end page

• 214

volume

• 231

issue

• 1-2

URL

• http%3A%2F%2Fdx.doi.org%2F10.1016%2Fs0926-860x%2802%2900053-4