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Table 2 N-containing groups on the surface of the prepared carbons

From: Furfuralcohol Co-Polymerized Urea Formaldehyde Resin-derived N-Doped Microporous Carbon for CO2 Capture

Sample Pyridinic-N (%) -C═NH PhNH2 (%) Pyrrolic-N (%) Quaternary-N (%) Oxidized-N (%)
UFC 34.1 14.7 37.2 8.5 5.5
UFA-2-600 20.3 12.7 32.7 28.2 6.1
UFFC 35.2 7.0 42.7 12.1 3.0
UFFA-2-600 16.2 4.8 35.5 35.2 8.3