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- W4319793622 abstract "Abstract To manufacture efficient and cost‐effective catalysts for soot combustion, a series of Mn x BiO y catalysts with different molar ratios of manganese bismuth ( x =1,3,6,9) were prepared by hydrolysis driven redox, coprecipitation and hydrothermal synthesis methods (named R−Mn x BiO y , Cop−Mn x BiO y and H−Mn x BiO y , respectively). The physicochemical properties of the as‐prepared catalysts were characterized via powder X‐ray diffraction (XRD), transmission electron microscope (TEM), temperature‐programmed reduction by hydrogen (H 2 −TPR), X‐ray photoelectron spectroscopy (XPS), and so on. The catalytic performance results show that R−Mn 3 BiO y catalyst obtained by hydrolysis‐driven redox method exhibited highest catalytic activity with a maximum concentration of CO 2 at 390 °C (T 10 =330 °C, T 50 =385 °C, and T 90 =425 °C). Meanwhile, the reaction mechanism of R−Mn 3 BiO y catalysts was also proposed based on the characterization results. The reason for high catalytic is related to the uniform distribution of Bi on the surface of Mn, which forms more lattice defects, thereby generating a large number of oxygen vacancies and providing more active sites for catalytic reactions. This provides a reference for the design of efficient and stable soot catalysts." @default.
- W4319793622 created "2023-02-11" @default.
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- W4319793622 date "2023-02-02" @default.
- W4319793622 modified "2023-10-12" @default.
- W4319793622 title "Bismuth Manganese Catalysts for Soot Oxidation in Diesel Engine Exhaust: Effect of Preparation Methods on Active Oxygen Species" @default.
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- W4319793622 doi "https://doi.org/10.1002/slct.202203167" @default.
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