The purpose of this study was to determine the possibility of producing hydrophobic mesoporous mineralcarbon sorbents from aluminum hydroxide and compositions of coal tar pitch-polymers on carbonization at 600°C in a nitrogen atmosphere. Blends of the products of co-precipitation of aluminum hydroxide in the carbonaceous substances medium were subjected to carbonization process. The extent of porous structure development was evaluated using low temperature nitrogen adsorption, adsorption of benzene vapors, and adsorption of iodine from aqueous solution. The highest value of BET surface area of about 370 m 2 /g was achieved for the carbonization product obtained from co-precipitated raw components with 10 wt% compositions coal tar pitch-polymer. These materials demonstrated high capacity to reduce organic pollutions from sewage. Pitch-polymer composition containing poly(ethylene terephthalate) or phenol-formaldehyde resin was studied by the means of DSC method in order to determine the high-temperature transformations taking place under the conditions of carbonization. DSC method enables to determine i.a. the decomposition temperatures of carbonizates produced from pitch-polymer compositions and the evaluation of their sorption abilities. The additive of poly(ethylene terephthalate) and phenol-formaldehyde resin caused the increase of thermal resistance of the pitch expressed by higher decomposition temperatures.
In this work, the results of studies on the preparation of sorbents from selected polymers were presented. The polymers were carbonized and subsequently physically activated by steam or carbon dioxide, or alternatively, chemically activated with potassium hydroxide. For the obtained materials, a specific area was evaluated by means of low-temperature nitrogen adsorption and benzene adsorption, iodine number was also determined. The obtained results indicated a possibility to procure hydrophobic sorbents of microporous structure. Sorbents having the best properties, i.e. the specific area of above 2000 m 2 /g were produced from poly(ethylene terephthalate) and phenol-formaldehyde resin.
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