Title
Surface modification of Co3O4 nanocubes with TEOS for an improved performance in the Fischer-Tropsch synthesis
Document Type
Article
Publication Date
3-1-2020
Abstract
The surface of Co O nano-cubes has been modified by adsorption of small amounts of tetraethoxysilane from a solution in n-hexane. The resulting silicate species on and near the Co O surface have been characterized using XPS, FTIR and XANES, and may have formed neso or island silicates. The presence of these silicate species hinders the reduction of Co O . IR-visible bonds of some of the adsorbed species remain intact even after reduction in hydrogen at elevated temperatures. The intrinsic catalytic activity of the modified, reduced modified Co O nano-cubes have been tested for their activity and selectivity in the Fischer-Tropsch synthesis under industrially relevant conditions. It is observed that the cobalt time yield increasing more than 7-fold by the presence of the silicate species on the surface. The increase in activity does not seem to correlate with a change in the resulting metal surface area. 3 4 3 4 3 4 3 4
Publication Source (Journal or Book title)
Catalysis Today
First Page
176
Last Page
182
Recommended Citation
Macheli, L., Roy, A., Carleschi, E., Doyle, B., & van Steen, E. (2020). Surface modification of Co3O4 nanocubes with TEOS for an improved performance in the Fischer-Tropsch synthesis. Catalysis Today, 343 (None), 176-182. https://doi.org/10.1016/j.cattod.2018.10.018