Open AccessTechnology development for cobalt F-T catalysts. Topical report No.3, Zirconia promotion of Fischer-Tropsch cobalt catalysts: Behavior in fixed-bed and slurry bubble column reactors
Author(s) -
R. Oukaci,
G. Marcelin,
James G. Goodwin
Publication year - 1995
Language(s) - English
Resource type - Reports
DOI - 10.2172/39707
Subject(s) - fischer–tropsch process , catalysis , cobalt , bubble column reactor , slurry , cubic zirconia , materials science , chemical engineering , selectivity , bubble , chemistry , metallurgy , composite material , organic chemistry , ceramic , gas bubble , engineering , parallel computing , computer science
A series of cobalt-based F-T catalysts supported on alumina and silica were prepared with different loadings of Zr and different sequences of impregnation of Co and Zr. All catalysts were extensively characterized by different methods. The catalysts were evaluated in terms of their activity and selectivity both in fixed bed and slurry bubble column reactors. Addition of ZrO{sub 2} to both Co/SiO{sub 2} and Co/Al{sub 2}O{sub 3} catalysts resulted in at least a twofold increase in the catalyst activity for F-T synthesis in the fixed bed reactor. In the slurry bubble column reactor, a similar promotion effect was observed for the SiO{sub 2}-supported catalysts, while the addition of Zr to a cobalt/alumina catalyst had a less significant effect