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- W2355408041 abstract "Potassium is present in the form of potassium salts, potassium sulphate and potassium chloride, in the flue gas generated by firing the Chinese coal and biomass, respectively. The effects of potassium salts on the selective catalytic reduction of NO with NH3 over V2O5/TiO2 catalysts were studied with static nitrogen physical absorption, temperature-programmed surface reaction (TPSR), Fourier transform infrared (FT-IR) spectroscopy and activity measurements. The results show that potassium salts deactivate the V2O5/TiO2 catalysts. And the stable temperature window of NO removal gradually narrows with increasing sediment of potassium salts on the catalysts and eventually disappears when the molar ratio of K to V reaches 3.0. The potassium salts doped on the catalysts markedly reduce the number of active sites on their surfaces but not change their reactivity significantly. The main reason of the catalyst deactivation is that K preferentially coordinates to Br￠nsted acid sites on the catalysts’ surfaces and neutralizes the acidity of them, as a result, the adsorbed NH3 decreases." @default.
- W2355408041 created "2016-06-24" @default.
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- W2355408041 date "2008-01-01" @default.
- W2355408041 modified "2023-09-26" @default.
- W2355408041 title "Effects of Potassium Salts on Selective Catalytic Reduction of NO With NH_3 Over V_2O_5/TiO_2 Catalysts" @default.
- W2355408041 hasPublicationYear "2008" @default.
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