Owing to the harmful influence of nitrogen oxides (NO.) on the environment the legislative demands a reduction of NOx emissions. This article is concerned with a screening of catalysts on the basis of sulfated zirconia for selective catalytic reduction (SCR) of NOx with methane as reducing agent. To this end, sulfated zirconium oxides were doped with Ga, In, Fe, Ni, Ca and Cc as well as In + Cc oxides and catalytically tested. In addition, the influence of reaction parameters and catalytic poisons on SCR activity and stability of some selected catalysts was investigated and illustrated.