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Materials, Volume 12, Issue 11 (June-1 2019)
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Cover Story (view full-size image) This study presents the synthesis and characterization of lanthanum-modified alumina supported [...] Read more. This study presents the synthesis and characterization of lanthanum-modified alumina supported cerium–manganese mixed oxides prepared by three different methods (coprecipitation, impregnation and citrate-based sol-gel method). It demonstrated that the role of the catalytic surface is more important than the bulk one. The incipient impregnation provided the best results of the catalytic combustion of methane on our catalytic micro-convertors. This is mainly due to: (i) the highest pore size dimensions; (ii) the highest amount of Mn4+ or/and Ce4+ on the surface; (iii) the presence of a mixed phase (Ce2MnO6); and (iv) a higher reducibility of Mn4+ or/and Ce4+ species. View this paper.