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A series of La–Mn–Zn–Cu–O based perovskite ceramic precursors were prepared and characterized by XRD, N2-adsorption, SEM, H2-TPR, N2O-adsorption, XPS and TPD techniques. Both La2CuO4 and LaMnO3 perovskite structures were observed for the materials and more defects and the “metal-on oxide” can be realized via reduction. It was found that the samples with both La2CuO4 and LaMnO3 structures showed better...
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