SYNTHESIS OF HIGH SURFACE AREA ACTIVATED CARBON XEROGEL FROM RESORCINOL-FORMALDEHYDE RESIN FOR CO2 ADSORPTION AND SEPARATION

Document Type : Original Article

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Egyptian Armed Forces.

Abstract

ABSTRACT
In this study, activated carbons xerogel were produced from a polycondensation reaction of resorcinol and formaldehyde in presence of monoethanolamine as a catalyst and under different CO2 activation conditions. The effects of activation time and temperature were investigated. The increase in activation time results in a continuous steady rise of the mesopore area and volume, while the micropore and total pore area and volume tend to reach a maximum at approximately two hour. The application of this material for CO2 capture and adsorption was studied using a perturbation gas chromatograph technique. The sample with the highest carbon dioxide adsorption capacity and CO2/N2 ratio (156.3 mg CO2/g and 2.9), was that one activated at a temperature of 8500C for three hour, its surface area and pore volume are 2398 m2/g and 1.982 cm3/g, respectively. The study also demonstrates the potential of the surface chemistry of RF-carbon xerogels for the generation of efficient CO2 adsorbents, if their beneficial surface chemistry could be combined with advantageous pore structure.

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