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Two nanostructured potassium–manganese oxides, with a layered (OL) and tunneled structure (OMS-2), were synthesized and their surface decorated with 1% Pd. All prepared samples were characterized by means of X-ray diffraction, Raman spectroscopy, N2-BET specific surface area analysis, TPR, SEM/TEM. Catalytic activity in soot combustion in different reaction conditions was investigated (tight contact,...
A layered potassium–manganese oxide, birnessite (OL: KMn4O8) was subjected to long-term post-calcination thermal treatment aimed at stimulating its activity in catalytic soot oxidation. The 12 h thermal treatment at several temperatures (425, 500, 550 and 650 °C) in atmospheric conditions resulted in the swift transformation of the layered material into the tunnel-shaped octahedral molecular sieve...
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