Chromatographic properties of carbon adsorbents prepared by the high-temperature treatment of Polish industrial active carbon from plum stones

The influence of high-temperature (2400 degrees C) treatment of two active carbons from plum stones differing in mesoporosity degree on their surface properties was studied. There were determined the following characteristics of the prepared adsorbents: specific surface area, total pore volume, micr opore volume, average pore size, crystallographic structure parameters, ads orption heats of benzene, n-hexane and chloroform. Using gas chromatography , there were made separations of saturated aqueous solutions of aliphatic a nd aromatic hydrocarbons as well as halogen derivatives, alcohols, ketones and others. Suitable experiments were carried but using the commercial carb on adsorbent Carbopack C, produced by Supelco, for comparison. The obtained adsorbents had quite advantageous surface parameters to be applied in chro matography.