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Synthetic activated carbons were prepared by phosphoric acid activation of a styrene-divinylbenzene copolymer in an air atmosphere at various temperatures in the 400-900 o C interval. The carbons were characterized by elemental analysis, cation-exchange capacity measurement, infrared spectroscopy, potentiometric titration, copper adsorption from solution and physical adsorption of N 2...
Synthetic activated carbons were prepared by phosphoric acid activation of a styrene-divinylbenzene copolymer at various temperatures in the 400-1000 o C range. The resulting carbons were characterized by elemental analysis, cation-exchange capacity measurement, infrared spectroscopy, potentiometric titration with calculation of proton affinity spectra, and copper adsorption from solution...
Synthetic activated carbons were prepared by H 3 PO 4 activation of a chloromethylated and sulfonated copolymer of styrene and divinylbenzene, using an impregnation weight ratio of 0.75 and carbonization temperatures in the 400-1000 o C range. Other impregnation ratios (0.93 and 1.11) were also used at a carbonization temperature of 800 o C. The porous texture of the...
Activated carbon fibres were obtained by pyrolysis followed by CO 2 activation of Nomex [poly (m-phenylene isophtalamide)] polymeric fibres in their crystalline form. The materials obtained were characterised by N 2 adsorption (77 K), CO 2 adsorption (273 K) and XRD. They show BET surface areas up to 1200 m 2 g -1 , and they are essentially microporous...
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