Resumen

MALEKIAN, F. et al. Surface Characteristics of Different Wood and Coal-Based Activated Carbons for Preparation of Carbon Molecular Sieve. J. Mex. Chem. Soc [online]. 2019, vol.63, n.2, pp.120-129.  Epub 20-Abr-2020. ISSN 1870-249X.  https://doi.org/10.29356/jmcs.v63i2.666.

In this study, four different nanostructures precursors, pistachio wood, walnuts wood, forest wood and coal (Anthracite) were selected to produce activated carbon. The experiments were done in industrial scale using a rotary furnace with temperature between 850 and 920 ºC for 45 minutes followed by steam. The product was grounded and divided in three particle sizes, 8x30, 30x50, and 60x80 meshes. The physical properties and surface chemistry of the activated carbon samples were determined by imaging of BET-N2 adsorption. The results obtained from measurements of iodine and methylene blue numbers, surface area, pore volume and comparison of surface area and pore volume, show that by decreasing of particle sizes of each sample, increase the surface area and micro pore volumes significantly. The magnitude of changes in surface area with particle size is a significant factor in defining the effectiveness and suitability of an activated carbon for the production of carbon molecular sieve. Our results indicate that the highest pore volume belongs to pistachio wood, which was increased from 0.168 to 0.271 cm3/g from 8x30 to 60x80 mesh.

Palabras llave : Activated Carbon; Surface Areas; Pore Volume; Size Reduction; Carbon Molecular Sieve.

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