Multicomponent Adsorption of Butane, NO_2 and SO_2 on Activated Carbon

摘要

Dynamic adsorption experiments have been carried out with the help of an FT-IR (Fourier-Transform InfraRed) spectrometer. Fixed bed adsorption breakthrough curves were obtained for n-butane, SO_2 and NO_2 gases as well as for the reaction products NO, N_2O and CO_2. the adsorption of SO_2 and NO_2 on activated carbon was studied both during single- and co-adsorption experiments at 30 ℃. The activated carbon used exhibited a disadvantage towards NO_2 adsorption in that it was partly converted to NO and immediately desorbed as NO. A further reaction to N_2O could also be observed. The activated carbon was rapidly altered and lost a notable part of its loading capacity as a result of the presence of water and oxygen. During co-adsorption, SO reacted with NO_2 (both as adsorbed species) and produced an additional amount of NO. An ash-tree spherical activated carbon with an extended surface area (1000 m~2/g) was used in all experiments.