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Activated carbons were produced from waste tires and their characteristics were investigated. Rubber separated from waste tires was first carbonized at 500 o C in N 2 atmosphere. Next, the obtained chars were activated with steam at 850 o C. As a result, fairly mesoporous activated carbons with mesopore volumes and BET surface areas up to 1.09 cm 3 /g and 737 m ...
Activated carbons were prepared from carbonized PET by steam activation via pretreatment by mixing PET with a metal salt [Ca(NO 3 ) 2 .4H 2 O, Ca(OH) 2 , CaCO 3 , ZnO, and AlNH 4 (SO 4 ) 2 .12H 2 O], and with acid treatment after carbonization. The porous properties of the activated carbons were determined by the nitrogen adsorption...
Carbon cryogel microspheres (CC microspheres) were successfully synthesized by an inverse emulsion polymerization of resorcinol with formaldehyde, followed by freeze drying and pyrolysis in an inert atmosphere. CC microspheres were characterized by scanning electron microscopy, elemental analysis and various gas adsorption measurements. By changing both the temperature for preparing the emulsion and...
Silicon containing vapor grown carbon fibers have been rapidly produced from a mixture of benzene and phenyl silane, using the liquid pulse injection technique. Fibers with lengths up to 20 mm were obtained within 1 min at a carbon yield of 0.23. The inclusion of silicon led to the improvement in the oxidation resistivity of the fibers. Moreover, the obtained fibers possessed tensile strengths and...
Benzene and several light paraffins were used as the initial carbon source for vapor grown carbon fiber production to clarify the dominant hydrocarbon which contributes to fiber growth. When light paraffins were used as the initial carbon source, methane, ethylene and benzene were found to be the main hydrocarbons which exist at the reaction zone for fiber growth. It was found that benzene is the...
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