Analyzing the role of copper in the soot oxidation performance of BaMnO3-perovskite-based catalyst obtained by modified sol-gel synthesis

• Carbon black decreases the calcination temperature to obtain perovskite structure. The distribution of copper depends on temperature. insertion into structure is promoted with BMC3-C600 shows most stable performance during cyclic experiments. presence surface and oxygen vacancies are for BMC3-C600. A series BaMn 0.7 Cu 0.3 O 3 solids were prepared by a modified sol-gel method in which carbon (VULCAN XC-72R), different temperatures (BMC3-CX, where X indicates temperature) have been used. fresh used catalysts characterized ICP-OES, XRD, XPS, FESEM, TEM, 2 -TPD H -TPR. synthesis BMC3 mixed oxide allows diminishing needed achieve structure, but it hinders formation BaMnO polytype. use low reduces sintering effects, oxides present lower particle size, slightly higher BET areas macropores diameter than BMC3. BMC3-CX as increases. All active NO x -assisted soot oxidation processes, only BMC3-C700 show catalytic activity reference catalyst. presents best features high amount that increase reaction. comparison between two BM-CX (BM-C700) (BMC3-C600) suggests unique advantage using an additional decrease 100 °C catalyst, 700 600 BMC3-CX.