Fischer-Tropsch performance correlated to catalyst structure: Trends in activity and stability for a silica-supported cobalt catalyst

Chemical imaging of Fischer-Tropsch catalysts under operating conditions

“…For offline testing, the calcined catalysts were loaded into a fixed-bed combinatorial reactor for FTS tests, as described previously ( 50 ). The catalyst was diluted with SiC and reduced in pure hydrogen at 400°C for 2 hours before testing under industrially relevant FTS conditions (210°C, 20 bar, 2:1 molar ratio H 2 /CO).…”

Particle size effects in Fischer-Tropsch synthesis by Co catalyst supported on carbon nanotubes

“…The catalyst support should provide well-dispersed stable Co particles, after catalyst reduction and activation. Supports can have negative effects, such as forming Co-support compounds like cobalt aluminate and cobalt silicate [8][9][10], which do not provide active sites for FTS. Carbon nanotubes (CNTs) as Co catalyst supports provide good control over the Co dispersion, while minimizing the formation of mixed compounds [11,12].…”

The Effect of Atomic Layer Deposited Overcoat on Co-Pt-Si/γ-Al2O3 Fischer–Tropsch Catalyst

“…Metallic Co crystallite diameter was calculated from in-situ XRD measurement results (Table 2) with Scherrer equation (Equation ( 4)). In comparison to H 2 -chemisorption Co 0 particle size, smaller Co 0 particle size values with in-situ XRD measurement was assumed to result from sample characteristics that are not considered with Scherrer equation, such as, defect concentration, crystalline strain, stacking faults, compositional variation, nanocrystallite size distribution, and sample thickness [29].…”