Procedure for obtaining activated carbon by chemical activation with sodium hydroxide, potassium hydroxide or mixtures thereof.

摘要

Process for preparing activated carbon by chemical activation with sodium hydroxide, potassium hydroxide or mixtures thereof. The process comprises mixing a carbonaceous precursor with an activating agent selected from sodium hydroxide, potassium hydroxide and mixtures thereof, using different methods of mixing (impregnation of the carbonaceous precursor with an aqueous solution of the activating agent, or alternatively with the minimum required amount of a solution saturated aqueous or near saturation, said activating agent to wet all of the carbonaceous precursor, and subsequent addition of activating agent in solid form) carbonizing the resulting material and wash. Activated carbons obtained have high microporosity distribution of controlled porosity, good characteristics of surface area and adsorption capacity, and can be used in multiple applications involving phase adsorption gas, gas storage and energy double layer capacitors (EDLC) .