The effect of the preparation method on the properties of LaMnO3 and\nLa0.8Sr0.2MnO3 perovskite was studied. Materials were prepared by four methods:\nsol-gel, chemical combustion, solvothermal and spray pyrolysis and\ncharacterized. The effect of the synthesis method on the texture, acid-base\ncharacter of the surface, reducibility with hydrogen, oxygen desorption, surface\ncomposition and catalytic activity for combustion of lean methane was\nstudied. It was found that synthesis method affects physicochemical properties\nof obtained materials-solvothermally produced materials exhibit\nwell-developed surface area, presence of reactive oxygen species on surface\nand high catalytic activity for CH4 combustion. Generally, LaMnO3 and\nLa0.8Sr0.2MnO3 perovskites show catalytic activity for lean CH4 combustion\ncomparable or higher than the activity of 0.5 wt.% Pt/Al2O3 but lower than 1\nwt.% Pd/Al2O3.
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