A series of iron-

copper-

zinc-

cerium-

magnesium- and aluminum-containing ternary and quaternary hydrotalcite-like compounds were prepared by coprecipitation and characterized by XRD and N2 adsorption-desorption.All samples prepared were calcined at 700℃ for 6 h to obtain metal complex oxides whose structure and SO2 redox performance were measured in a modified WRP-3 thermal balance.The results showed that zinc was not effective for redox of SO2 and copper was an efficient promoter for oxidization of SO2 to SO3

while iron could play dual role of oxidizing and reducing promoter.In quaternary hydrotalcite-like compounds MgAlFeCu(n(Mg2+)/n(Al3+)=3

m(Fe)=8%

m(Cu)=1%) showed synergistic effect between Fe and Cu

which resulted in its higher oxidative adsorption rate

larger adsorption capacity and better reductive ability

and its total saturation adsorption capacity could be 1.33 g·g-1 in 6 min.