Abstract
A new carbon for liquid and gas chromatography, called “porous glassy carbon” (PGC) is described. The material is made using a porous template filled with carbonizable resin. After firing in an inert atmosphere the template is removed. PGC has been made with surface area ranging from 20 m2/g to 400 m2/g. It is of adequate strength for gas and high-performance liquid chromatography. In gas chromatography it is similar to the commerical graphitized thermal carbon black (GTCB) “Carbopack B”, but has somewhat less retention per unit surface area and is much more robust. It gives symmetrical peaks for hydrocarbons with k′-values up to at least 100. In liquid chromatography it is similar to the GTCB's coated with pyrolytic carbon described by Guiochon. It behaves as a strong reversed phase adsorbent. Fairly good peak symmetry is maintained for k′-values up to at least 10 but trace additives to the eluent may be necessary to control peak asymmetry. PGC has considerable potential as a new packing material in both gas and liquid chromatography.
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