Microwave regeneration technology is recognized as a high-efficiency and energy-saving regeneration technology.In this study

in order to decrease the temperature gradient in adsorbent beds under microwave radiation

a novel composite activated carbon with high thermal conductivity was prepared by adding expanded graphite and its regeneration under microwave radiation was investigated.The results show that the thermal conductivity of the composite activated carbon is about 6 times higher than that of the traditional commercial activated carbon while its adsorption capacity decreases a little.And the temperature difference in the composite activated carbon bed under microwave radiation is 10—30℃

less than that in the commercial activated carbon bed.The activation energy for desorption of toluene on the composite activated carbon (18.08 kJ·mol-1) is smaller than that on the industrial activated carbons (24.84 kJ·mol-1).Thus the composite activated carbon with high thermal conductivity not only has good adsorption properties

but also has good applicability to microwave radiation.