Four organic aerogels were prepared by the sol-gel method from polymerization of rescinol with formaldhyde catalyzed by Na CO_3. These aerogels were further pyrolyzed in N_2 in order to obtain their corresponding carbon aerogels, and after that activated with either steam or CO_2 to obtain activated carbon aerogels.Another series of organic aerogels and their pyrolyzed and activated derivatives were prepared without a catalyst or in the presence of Ag, Pd or Pt. All these samples were texturally characteized, which has shown the porous modifications undergone by the aerogels during the pyrolysis and acivation processes. The textural characteristics of the transistion-metal-containing activated carbon aerogels depend on the nature of the metal. Thus, whereas the sample containing Pt, in a very small amount, had the largest meso and macropore volume (0.822 and 2.982 cm~(-3) g~(-1)) found, those containing either Pd or Ag were essentially microporous.
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