In the presence of Friedel Crafts' catalysts the chloromethylated copolymer of styrene-di-vinylbenzene may react with each other and form crosslinking by itself. Thus

there is obtained a new type of polymeric adsorbent

the structure of which is identified by its physical properties and infrared spectra. The Friedel-Crafts reaction is manifestly affected by the nature of the solvent

the kind and amount of catalyst

reaction temperature

length of reaction time etc. The structure of the holes and the physical properties of the adsorbent were deter-mined systematically. The properties of the adsorbent made domestically

made abroad and also of the carbonized polymers were compared. It indicates that the adsorbent reported here pos-sesses high specific surface area (1000-1300m2/g)

high porosity

narrow pore distribution

high skeleton density and good mechanical property.