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Reactivity of Ni-modified MIL-100(Fe) catalysts for C3H6-SCR and reaction mechanism
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DOI：10.1016/j.catcom.2024.106854.png)
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Abstract
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Metal-organic frameworks (MOFs)-based carrier, MIL-100(Fe), was synthesized by hydrothermal method and Ni was supported on the MIL-100(Fe) by wet impregnation method to prepare the catalysts for selective catalytic reduction of NO with C3H6 (C3H6-SCR). The addition of Ni significantly improved the reactivity of C3H6-SCR. At 275 degrees C, the NO conversion of MIL-100(Fe) was 74.5%, whereas the NO conversion of 5.8%Ni/MIL-100(Fe) with 100% N-2 selectivity was 100%. The in-situ DRIFTS prove that the interaction between NO2-/NO3- and CxHyOz substances generated intermediate isocyanates (R-NCO), and the reaction pathway was proposed based on the DRIFTS results to understand the mechanism.
Keywords:
NO emission
Ni/MIL-100(Fe) catalyst
In-situ DRIFTS
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