6533b86dfe1ef96bd12ca061
RESEARCH PRODUCT
Superior Fischer-Tropsch performance of uniform cobalt nanoparticles deposited into mesoporous SiC
Libor KovarikT. Visart De BocarméViacheslav IablokovViacheslav IablokovIgor BezverkhyySvitlana GrynVladimir ZaitsevSergei AlekseevNorbert KruseNorbert Krusesubject
Mesoporous silicon carbidechemistry.chemical_elementNanoparticle010402 general chemistry01 natural sciencesCatalysisFischer-TropschCatalysischemistry.chemical_compoundCobalt nanoparticlesSilicon carbideChimieCinétique chimiquePhysical and Theoretical ChemistryComputingMilieux_MISCELLANEOUSMCF-17CO hydrogenation010405 organic chemistryFischer–Tropsch processChimie des surfaces et des interfacesPhysique des phénomènes non linéaires0104 chemical sciences[CHIM.THEO]Chemical Sciences/Theoretical and/or physical chemistrychemistryChemical engineeringSelectivityDispersion (chemistry)Mesoporous materialCatalyses hétérogène et homogèneCobaltSciences exactes et naturellesdescription
Electrochemically-derived well-crystalline mesoporous silicon carbide (pSiC) was used as a host for cobalt nanoparticles to demonstrate superior catalytic performance during the CO hydrogenation according to Fischer-Tropsch. Colloidal Co nanoparticles (9 ± 0.4 nm) were prepared independently using colloidal recipes before incorporating them into pSiC and, for comparison purposes, into commercially available silica (Davisil) as well as foam-like MCF-17 supports. The Co/pSiC catalyst demonstrated the highest (per unit mass) catalytic activity of 117 µmol.g(CO)-1.g-1(Co).s-1 at 220 °C which was larger by about one order of magnitude as compared to both silica supported cobalt catalysts. Furthermore, a significantly higher C5+ hydrocarbons selectivity was observed for Co/pSiC. The stable performance of the catalyst is attributed to the high dispersion of the active phase and the use of pSiC acting as a thermally conductive and chemically inert mesoporous support.
| year | journal | country | edition | language |
|---|---|---|---|---|
| 2020-03-01 |