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Perovskite-type oxides containing rare earth ions and transition metals are of interest for catalytic oxidation and reduction reactions associated with automotive exhaust emission control. They are known to exhibit a good catalytic activity in the total oxidation reaction of carbon monoxide or hydrocarbon and removal of nitrogen oxides. By partially substitution of A and B ions of the perovskite with others, a wide variety of mixed oxides A1-xA’xB1-yB’yO3 can be obtained, allowing the systematic modification of the catalytic properties. We presented the preparation and the catalytic properties of and La0.7Sr0.3BO3 (B = Mn, Fe, Ni) perovskites in total oxidation of m-xylene in previous report. Obtained results showed that they exhibit a good catalytic activity in total oxidation of m-xylene at relatively low reaction temperature. In present work, the activation energy of total oxidation reaction of m-xylene over these catalysts are determined. The results show that the activation energy of studied catalyst is ranging about from 11.5 to 13.4 kcal/mol. The replacement of Mn by Fe and Ni in La0.7Sr0.3MnO3 perovskite catalyst reduces the catalytic property of La0.7Sr0.3MnO3 catalyst and increases the activation energy of the total oxidation reaction of m-xylene.
 Barison S., Battagliarin M., Daolio S., Fabrizio M. et al., Novel Au/La1-xSrxMnO3 and Au/La1-xSrxCrO3 composites: Catalytic activity for propane partial oxidation and reforming, J. Solid State Chem., Vol 177 No. 39 – 44 (2007) 3473.
 Blasin - Aube V., Belkouch J., Monceaux L. , General study of catalytic oxidation of various VOCs over La0,8Sr0,2MnO3+x perovskite catalyst – influence of mixture, Applied Catalysis B: Environmental, 43 (2003) 175.
 Florina - Corina Buciuman, Florin Patcas, Jean - Christophe Menezo, et al., Catalytic properties of La0,8A0,2MnO3 (A = Sr, Ba, K, Cs) and LaMn0,8B0,2O3 (B = Ni, Zn, Cu) perovskites oxidation of hydrogen and propene, Applied catalysis B: Environmental, 35 (2002) pp. 175.
 Geoffrey C. Bond, Catherine Louis, David T. Thompson, Catalysis by Gold, Catalytic Science Series-Vol.6, Imperial College Press 2006.