Abstract

NAVARRETE, Luisa Fernanda; GIRALDO, Liliana; BAQUERO, María Cristina  and  MORENO, Juan Carlos. ACTIVATED CARBON: EFFECT OF THE WASHING WITH SULFURIC ACID OF THE LIGNOCELLULOSIC PRECURSOR, SHELL OF AFRICAN PALM, ON THE PROCESSES OF CARBONIZATION AND ACTIVATION. Rev.Colomb.Quim. [online]. 2005, vol.34, n.1, pp.67-78. ISSN 0120-2804.

Controlled washings are made at different periods of time, 6 and 12 hours, with dilute sulfuric solutions 2, 5 and 10% on the lignocellulosic precursor shell of African Palm lowering 50% the ash content of the material. The inmersion enthalpies are determined in the samples with greater degree of activation with results that are between 2 and 10 J.g^-1 and are compared with those gotten for activated carbons resulting when the initial material are washed with water during similar periods.

Keywords : activated carbon; ashes; acid washings; immersion calorimetry.

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