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On the characterization of acidic and basic surface sites on carbons by various techniques

López-Ramón, María Victoria ; Stoeckli, Fritz ; Moreno-Castilla, Carlos ; Carrasco-Marín, Francisco

In: Carbon, 1999, vol. 37, no. 8, p. 1215-1221

Active carbons of different origins have been oxidized with H2O2 and (NH4)2S2O8 and their oxygen surface complexes have been characterized by TPD, classical titration following Boehm's method and by neutralization calorimetry. The net enthalpies of neutralization, determined by immersion calorimetry into NaOH and HCl 2 N lead to...