To obtain cathode electrocatalysts for the oxygen reduction in proton exchange membrane（PEM）fuel cell，iron and cobalt tetramethoxyphenylporphyrins adsorbed on pretreated carbons

including black pearls 2000（BP）and Vulcan XC-72（Vulcan）respectively by depositing MnOx were investigated in detail.The effects of different central metal ions，carbon supports，pretreatment methods and various heat-treatment temperatures were compared.The catalysts were evaluated by RDE in 0.5 mol·L-1 H2SO4.The best results were obtained for CoTMPP on BP pretreated by H2O2.The most active and stable catalysts were obtained by calcining at a high temperature（900℃）.After heat-treatment at 900℃，Co—N4 bond structure in CoTMPP catalyst was no longer detected which meant that the central structure of the catalyst was changed during heat-treatment.Trying to deposit MnOx in carbons did not achieve the expected result in acid medium.