Abstract
In this study, synthetic viscose rayon fabric has been used for preparing activated carbon fabric (ACF), impregnated with different concentrations of <TEX>$H_3PO_4$</TEX>. The effect of <TEX>$H_3PO_4$</TEX> impregnation on the weight yield, surface area, pore volume, chemical composition and morphology of ACF were studied. Experimental results revealed that both Brunauer-Emmett-Teller surface area and micropore volume increased with increasing <TEX>$H_3PO_4$</TEX> concentration; however, the weight yield and microporosity (%) decreased. It was observed that samples impregnated at <TEX>$70^{\circ}C$</TEX> (AC-70) give higher yield and higher microporosity as compared to <TEX>$30^{\circ}C$</TEX> (AC-30). The average pore size of the ACF also gradually increases from 18.2 to 19 and 16.7 to <TEX>$20.4{\AA}$</TEX> for <TEX>$30^{\circ}C$</TEX> and <TEX>$70^{\circ}C$</TEX>, respectively. The pore size distribution of ACF was also studied. It is also concluded that the final ACF strength is dependent on the concentration of impregnant.
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