Effects of CO2 on submicronic carbon particulate (soot) formed during coal pyrolysis in a drop tube reactor

Beside the larger formation of soot, relevant differences in terms of combustion reactivity, size distribution and chemical structure of the residual carbon particulate produced in CO2 environment in respect to N2 environment were observed by means of a large array of techniques including thermogravimetry, microscopy (SEM+EDX), FT-IR, UV-visible and Raman spectroscopy along with XRD and XPS techniques.