Nitrogen-doped porous carbon (N-carbon) with high nitrogen content was synthesized by carbonization of an ionic liquid. The hydrothermal and chemical stability of N-carbon was investigated by treatment in flowing steam, pure CO 2, dry air, and dry SO 2 at 130 °C. CO 2 adsorption measurements before and after the treatments showed that, even under such severe conditions, in comparison to typical adsorption–desorption cycling, N-carbon was found to be a remarkably stable material for CO 2 capture.
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Sethia et al. (2014) studied this question.
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