Resumo

RODRIGUEZ, Giovanny; GIRALDO, Liliana  e  MORENO, Juan Carlos. PREPARATION AND STRUCTURAL CHARACTERIZATION BY X-RAY DIFFRACTION OF ACTIVATED CARBON PREPARED FROM WOVEN MATERIALS . Rev.Colomb.Quim. [online]. 2007, vol.36, n.2, pp.259-269. ISSN 0120-2804.

Activated carbon cloths are prepared by chemical activation of two woven materials of cotton, by the impregnation in diluted aqueous solutions of ZnCl2, AlCl3 and H3PO4 and the later carbonization in nitrogen and carbon dioxide atmosphere up to a final temperature of 850 °C . We report the percentage of contraction and yield as well as the structural parameters determined by adsorption of N2 77 K, and they are compared with some crystallographic parameters determined by X-ray diffraction. The prepared activated carbon cloths exhibit a superficial area of between 210 m2g-1 and 951 m2g-1, as well as micropore volumes 0,09 cm3g-1 and 0,528 cm3g-1 that allows to study the influence of the precursors, the chemical agent used as impregnant and the atmosphere of carbonization.

Palavras-chave : activated carbon cloth; adsorption isotherm; X-ray diffraction.

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