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A high-surface-area La-Ce-Mn mixed oxide was synthesized by citrate method, with further acid etching to dissolve the La3+ ions in the lattice. The acid etching process efficiently improved the specific surface area, increased the ratios of Mn4+/Mnn+, Ce3+/Cen+, Oα/Otot, and enhanced the oxygen mobility of the catalyst, which were responsible for the superior catalytic performance. Compared to the...
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