Abstract

RODRIGUEZ, Giovanny; GIRADO, Liliana  and  W:ST="ON">MORENO, Juan C. PREPARATION AND CHARACTERIZATION OF ACTIVATED CARBON INFLUENCE OF THE PRECURSOR OF COTTON. Rev.Colomb.Quim. [online]. 2007, vol.36, n.1, pp.43-53. ISSN 0120-2804.

The present work reports the results of the preparation of two activated carbon cloths by chemical activation of cotton based fabrics. The preparation of the materials was achieved by its impregnation into a solution 0.10 M of H₃ PO₄ , followed by carbonisation in carbon dioxide atmosphere up to 825ºC . Thermal analysis of the precursor fabrics that allow to adjust the experimental conditions of carbonization are presented, as well as the contraction percentages and yield of the prepared materials that are respectively between 50% and 20% The activated carbon cloths prepared exhibit a superficial area of 796 m² .g^-1 and 951 m² .g^-1 , and micropore volume of 0.416 cm³ g^-1 y 0.528 cm³ g^-1 . A calorimetric study of the prepared solids allows to estimate that the immersion enthalpies in carbon tetrachloride are - 4.66 J g^-1 and -5.05 J g^-1 respectively. The optical microscopy results of the prepared cloths also are presented.

Keywords : Activated Carbon Cloth; Adsorption Isotherm; Immersion Calorimetry; Optical microscopy.

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