Study on the role of atomic carbon species in cobalt-based FT synthesis catalyst

Figure 1 FT reaction performance of catalyst with different carbon content(a) CO conversion and methane selectivity at the same temperature;(b) Methane selectivity and reaction temperature at 30-40 %CO conversionTable1 FT reaction performance of catalystFigure 2 XRD patterns of catalysts Figure 3 TPH spectra of catalysts with different carbon contentFigure 4 Diffuse reflection infrared spectra of catalysts with different carbon contentFigure 5 In-situ Raman spectra of P-Co catalyst in syngas (H2/CO=2) atmosphereFigure 6 C1s XPS spectra of P-Co catalysts with different carbon contentFigure 7 TPH-MS spectra of catalysts with different treatment timesFigure 8 XRD spectra of pretreated catalysts C-Co and C-Co-C Figure 9 TPH profiles for the C-Co-C catalystFigure 10 Comparison of FT reaction properties of C-Co and C-CO-C catalysts：CH4 selectivity and reaction temperature at 30-40 % CO conversion