Catalytic oxidization of SO2 from incineration flue gas over bimetallic Cu–Ce catalysts supported on pre-oxidized activated carbon☆

To improve the deep sulfation of alumina support, the inertness material activated carbon was used as an alternative support for copper/cerium catalysts to remove SO2 from incineration flue gas which contained other air pollutants such as NOX, CO, CO2, HCl, carbon particulates, and heavy metal vapor. During the 473–820 K, the AC support showed no retention of SO2. However, the metal Pb composed in the flue gas exhibited the toxic characterization to M/AC catalysts, which was due to the outer orbitals of d subshell all paired.