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- W2057863741 abstract "Mn/MFI catalysts were prepared by different methods and probed as catalysts for the catalytic reduction of NOx with CH4 or iso-butane in a gas flow containing excess O2. Mn/MFI with high manganese loading was obtained by solid state ion exchange (SSI). The intensity of an IR band at 957 cm−1, which is due to the perturbation of zeolite lattice vibrations by Mn ions attached to cage walls is proportional to the Mn content of the catalysts. Conversely, the intensity of the 3610 cm−1 band, assigned to Brønsted acid sites decreases linearly with the Mn loading. A catalyst obtained by exchanging Na/MFI with an aqueous solution of Mn acetate is found most active for NOx reduction with methane. Transport by surface diffusion of Mn ions from MnI2 to exchange positions in MFI is more efficient than their transport through the gas phase. High NO conversion over proton-free catalysts indicates that protons are not instrumental in NOx reduction over Mn/MFI." @default.
- W2057863741 created "2016-06-24" @default.
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- W2057863741 date "2003-06-10" @default.
- W2057863741 modified "2023-09-26" @default.
- W2057863741 title "Mn/MFI catalyzed reduction of NOx with alkanes" @default.
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- W2057863741 doi "https://doi.org/10.1016/s0926-3373(02)00278-3" @default.
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