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On the reaction mechanism of the chemical activation of Quercus Agrifolia char by alkaline hydroxides |
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| Authors: | Alejandro Robau-Sánchez Federico Cordero-de la Rosa Julia Aguilar-Pliego Alfredo Aguilar-Elguézabal |
| Affiliation: | (1) Universidad Autónoma Metropolitana-Azcapotzalco, área de Química Aplicada edif. G-bis, San Pablo 180, Col. Reynosa-Tamaulipas, Del. Azcapotzalco, CP 02200 México DF, México;(2) Laboratorio de Catálisis, División de Física y Química de los Materiales, Centro de Investigación en Materiales Avanzados, CIMAV, Miguel de Cervantes 120, Complejo Industrial Chihuahua, CP 31109 Chihuahua, México |
| Abstract: | Activation of Quercus Agrifolia char with NaOH and KOH using a rotary batch reactor is presented in this work. Several samples of activated carbon showing a very high degree of activation with predominance of microporosity were obtained. Nitrogen and argon were used as gaseous media in the activation procedure. Samples were evaluated using nitrogen adsorption applying BET and DR equation for porosity assessment. The existence of CN− in activated samples suggests the occurrence of not previously reported chemical reactions in this process and could be an indication of the involvement of N2 in the chemical reaction. Following these results, some additional chemical reactions are proposed as part of the reaction mechanism for MeOH-C-N2 system. |
| Keywords: | Activated carbon Chemical activation Reaction mechanism |
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