title: A Facile Synthesis of SiO2@Co/mSiO2 Egg-Shell Nanoreactors for Fischer-Tropsch Reaction.
abstract: Recently, a convenient melt-infiltration method, using a hydrated metal salt with porous support, was developed to prepare various metal/metal-oxide nanocatalysts. Until now, millimeter-scale, bead-shaped, cobalt egg-shell catalysts have been used to enhance the rate of reactant diffusion and catalyst performance. In the present work, new SiO2@Co/mSiO2 egg-shell nanoreactors (~300 nm) were synthesized with controlled Co content of 10 and 20 wt%. This was accomplished using a selective melt-infiltration process with porous silica shells around solid-silica cores. The SiO2@Co(10 wt%)/mSiO2 egg-shell catalyst that bears small cobalt nanoparticles of -2 nm was successfully employed for the industrially valuable Fischer-Tropsch synthesis reaction, showing the high activity of -8.0 x 10(-5) mol(CO) x gCo(-1) x S(-1).
authors.forename: Jae In
authors.initials: JI
authors.lastname: Kwon
authors.forename: Tae Wan
authors.initials: TW
authors.lastname: Kim
authors.forename: Ji Chan
authors.initials: JC
authors.lastname: Park
authors.forename: Jung-Il
authors.initials: JI
authors.lastname: Yang
authors.forename: Kwan Young
authors.initials: KY
authors.lastname: Lee