467552 Effect of Carbon Support on Supercritical Fluid Mediated Fischer-Tropsch Synthesis with an Iron-Based Nanoscale Catalys
Because FTS is a surface-catalyzed reaction, it stands to benefit from the significant surface area per mass offered by nanoparticle catalysts. These nanoparticles, however, must be supported in order to reduce attrition, maintain dispersion, and provide mechanical strength. Traditional supports such as SiO2 and Al2O3 can be used, but can have overly strong interactions with small particles, inhibiting reduction and reducing activity. Carbon-based supports such as nanotubes, nanofibers, and graphene offer a promising alternative, because they are stable and inert under FTS reaction conditions and do not adversely affect catalyst reduction. This paper presents the systematic characterization of multiple carbon-supported, iron-based catalysts coupled with a comparison of their FTS performance in both gas phase and supercritical phase operation.