| The preferential oxidation of carbon monoxide in the H2-rich gas is considered as a simple, economic and effective mean to solve the problem to prevent the Pt anodes of fuel cells be poisoned due to the trace CO.Given the non-noble metal catalysts had unsatisfied CO oxidation capability at low temperature, in this paper, We fabricated efficient Co-Mn-O composite catalysts by a facile urea hydrothermal decompose method. During the process,we had investigated the influence of ion concentration, hydrothermal temperature, hydrothermal time and calcination rate over Co-Mn catalysts.We had investigated the structure-activity relationship of catalysts were characterized those Co-Mn composite catalysts by SEM, XRD, H2-TPR, Raman and XPS techniques. |
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