The investigation of mechanism of SCR reaction on a TiO2-SO42- catalyst by DRIFTS
(2000) Applied Catalysis B: Environmental — Vol. 27, n° 1, p. L11-L16 (2000)
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- The intermediates and the mechanism of the SCR reaction of NO with NH3 on TiO2 sulfate have been studied by Diffuse Reflectance Infrared Fourier Transform Spectroscopy (DRIFTS), FT-IR and NH3-TPD. In the presence of ammonia on the surface, NO adsorbed as NO- species are enhanced and then oxidized to NO2 and NO3- by oxygen either from structure or NO. The formation of NO3- species perturbs the adsorption of protonated ammonia and induces its removal as N-2 at 300 degrees C. The result obtained from FT-LR shows that the NH3 species adsorbed on Lewis acid site remain as main species at high temperature. Accordingly, a Langmuir-Hinshelwood mechanism on Lewis acid site is suggested. (C) 2000 Elsevier Science B.V. All rights reserved.
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Jung, S., & Grange, P. (2000). The investigation of mechanism of SCR reaction on a TiO2-SO42- catalyst by DRIFTS. Applied Catalysis B: Environmental, 27(1), L11-L16. https://doi.org/10.1016/S0926-3373(00)00145-4 (Original work published 2000)