Adsorption of naphthalene derivatives on hypercrosslinked polymeric adsorbents

Two hypercrosslinked resins CHA-101 and CHA-111 were used as polymeric adsorbents and their behaviours against the adsorption of four naphthalene derivatives--1-naphthol, 2-naphthol, 1-naphthylamine and 2-naphthylamine were studied. Equilibrium adsorption data were obtained and fitted to the Freundlich isotherms. Results indicated that the CHA series resins were far more superior to macroporous Amberlite XAD-4 in adsorbing naphthalene derivatives, and the CHA-101 resin demonstrated the highest adsorption capacity. The difference in the adsorption property between the hypercrosslinked resins and the conventional macroporous resin was attributed to the large specific surface area, uniform pore structure, appropriate pore size and partial polarity of the network of the hypercrosslinked resins. (C) 1999 Elsevier Science Ltd. All rights reserved.