Potential of Silicon Carbide-Derived Carbon for Carbon Capture

Experiments of H 2 O and N 2 adsorption in silicon carbide-derived carbon (SiC-CDC) are reported, showing only weak adsorption of N 2, with H 2 O adsorption being highly kinetically restricted due to the strong hydrophobicity of this material. Such results suggest that SiC-CDC is an attractive option for adsorptive CO 2, as our prior experiments have shown much more significant adsorption of this gas. This is confirmed by grand canonical Monte Carlo simulations, which show that in a 2-stage adsorption system the CO 2 mole fraction can be increased from 15% (typical of flue gas) to 80–99.6% for the pore sizes that comprise the SiC-CDC.