In this contribution we evaluated the effect of synthesis procedure (complexing molecule, calcination temperature) and doping on the properties and catalytic performance of SrTiO 3 . Focusing on preparation we compared two complexants: citric acid and glycine calcinating the catalysts at 700 and 850 °C. Moreover, we doped the perovskite substituting Sr with K and Ti with Mn. The obtained catalysts have been characterized by X-Ray diffraction, X-Ray photoelectron spectroscopy, BET, scanning electron microscopy, energy dispersive X-Ray analysis, temperature programmed reduction. To evaluate the effect of upon mentioned aspects on the catalytic activity, the following reactions have been considered: CO oxidation, CO assisted NO reduction, soot oxidation. The obtained results underline the deep effect of dopants, with particular reference to Mn, on the catalytic performance.