Phosphorus Deactivation on Co-based Catalysts for Fischer-Tropsch

Deactivation and Regeneration of Commercial Type Fischer-Tropsch Co-Catalysts—A Mini-Review

Deactivation of commercially relevant cobalt catalysts for Low Temperature Fischer-Tropsch (LTFT) synthesis is discussed with a focus on the two main long-term deactivation mechanisms proposed: Carbon deposits covering the catalytic surface and re-oxidation of the cobalt metal. There is a great variety in commercial, demonstration or pilot LTFT operations in terms of reactor systems employed, c...

Adsorption of H2 and CO on Iron-based Catalysts for Fischer-Tropsch Synthesis

The adsorption properties of CO and H2 on iron-based catalyst with addition of Zr and Ni were investigated using temperature programmed desorption process. It was found that on the carburized iron-based catalysts, molecular state and dissociative state CO existed together. The addition of Zr was preferential for the molecular state adsorption of CO on iron-based catalyst and the presence of Ni ...

Iron-based Catalysts for Slurry-phase Fischer-tropsch Synthesis

The Pi t tsburgh Energy Technology Center i s responsible f o r implementing the U.S. Department o f Energy's (DOE) I n d i r e c t L iquefact ion program as p a r t o f the Coal L iquefact ion program. The o v e r a l l goal of t he Coal L iquefact ion program i s t o develop the s c i e n t i f i c and engineering knowledge base t o he lp i ndus t r y market economically compet i t ive and en...

Deactivation Behavior of Carbon Nanotubes Supported Cobalt Catalysts in Fischer-Tropsch Synthesis

The effects of electronic properties of inner and outer surfaces of Carbon Nano Tubes (CNTs) on the deactivation of cobalt Fischer-Tropsch (FT) catalysts were studied. The comparative characterization of the fresh and used catalysts by TEM, XRD, TPR, BET and H2 chemisorption showed that cobalt re-oxidation, cobalt-support interactions and sintering are the main sources o...

Tropsch synthesis using Co based carbon catalysts