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- W1969968468 abstract "The activity and stability of potassium-copper perovskite catalysts for soot combustion were analysed at 450 °C in a NOx/O2 gas mixture. Both impregnated (K-Cu/SrTiO3) and substituted (SrKTiCuO3) copper-potassium catalysts were prepared. For comparative purpose, also a potassium substituted catalyst (SrKTiO3) was studied. The high activity of the fresh potassium catalyst (SrKTiO3) is based on the volatile potassium species reaching the surface of soot. However, this catalyst is not useful because potassium is progressively lost during the reaction. Potassium was stabilized by copper and, as a consequence, the two potassium-copper perovskite catalysts present a constant activity for the soot combustion. The activity of the potassium-copper perovskite catalysts, which is maintained during consecutive reactions, is related to their NO2 production capacity. The metal addition method seems to influence the catalysts performance, the substituted catalyst (SrKTiCuO3) being the most active and stable." @default.
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- W1969968468 date "2014-09-01" @default.
- W1969968468 modified "2023-10-16" @default.
- W1969968468 title "Potassium-copper perovskite catalysts for mild temperature diesel soot combustion" @default.
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- W1969968468 doi "https://doi.org/10.1016/j.apcata.2014.07.037" @default.
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