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Issue
Korean Journal of Chemical Engineering,
Vol.35, No.10, 1988-1993, 2018
Reduced graphene oxide supported V2O5-WO3-TiO2 catalysts for selective catalytic reduction of NOx
Lee MW, Ye BR, Jeong BR, Chun HY, Lee DH, Park SS, Lee HS, Kim HD
We present a reduced-graphene-oxide (rGO)-supported V2O5-WO3-TiO2 (VWTi) catalysts for the efficient selective catalytic reduction of NOx. The rGO support provides well-dispersed functional sites for the nucleation of nanoparticles, allowing the formation of VWTi catalysts with high specific surface areas. The dispersion of the nanoparticles, as observed by transmission electron microscopy (TEM) and energy dispersive spectroscopy (EDS), confirmed the uniform dispersion of the particles on the rGO surface. Detailed Fourier-transform infrared (FT-IR) and NH3 temperature-programmed desorption (NH3-TPD) analyses indicated that the high density of acidic sites provided by the rGO is key to the observed enhancement of NOx removal efficiency, and the rGO-supported catalysts exhibit improved NOx removal efficiencies with smaller amounts of V2O5 and WO3 compared with the commercially available V2O5-WO3-TiO2 catalysts.
Keywords: Reduced Graphene Oxide; NOx Removal Efficiency; Selective Catalytic Reduction; High Dispersion; Wet Impregnation
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[Cited By]
  1. Lu Q, Ali Z, Tang H, Iqbal T, Arain Z, Cui MS, Liu DJ, Li WY, Yang YP, Korean Journal of Chemical Engineering, 36(3), 377, 2019
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