Study of the V2O5-WO3/TiO2 Catalyst Synthesized from Waste Catalyst on Selective Catalytic Reduction of NOx by NH3

V2O5-WO3/TiO2 catalysts were synthesized from waste selective catalytic reduction (SCR) catalyst through oxalic acid leaching and impregnating with various V2O5 mass loadings. The denitration (deNOx) activity and physiochemical properties of the catalysts were investigated. All the catalysts were ch...

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Published in:Catalysts 2017-04, Vol.7 (12), p.110
Main Authors: Qi, Chunping, Bao, Weijun, Wang, Liguo, Li, Huiquan, Wu, Wenfen
Format: Article
Language:English
Subjects:
Acid leaching
Ammonia
Catalysts
Catalytic activity
Chemical reactions
Chemical reduction
Chemical synthesis
Fourier transforms
Infrared spectroscopy
Oxalic acid
Photoelectrons
Physiochemistry
Recovery
Selective catalytic reduction
Titanium dioxide
Tungsten oxides
Vanadium pentoxide
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container_title Catalysts
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creator Qi, Chunping
Bao, Weijun
Wang, Liguo
Li, Huiquan
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description V2O5-WO3/TiO2 catalysts were synthesized from waste selective catalytic reduction (SCR) catalyst through oxalic acid leaching and impregnating with various V2O5 mass loadings. The denitration (deNOx) activity and physiochemical properties of the catalysts were investigated. All the catalysts were characterized by N2 adsorption/desorption, Fourier transform infrared spectroscopy, X-ray photoelectron spectroscopy, and H2-temperature programmed reduction. The evaluation result revealed that the deNOx activity of newly synthesized catalyst with 1.0% V2O5 was almost recovered to the level of fresh catalyst, with NO conversion being recovered to 91% at 300 °C, and it also showed a good resistance to SO2 and H2O. The characterization results showed that the decrease of impurities, partial recovery of the V4+/V5+ ratio, and increased reducibility were mainly responsible for the recovery of catalytic activity.
doi_str_mv 10.3390/catal7040110
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subjects Acid leaching
Ammonia
Catalysts
Catalytic activity
Chemical reactions
Chemical reduction
Chemical synthesis
Fourier transforms
Infrared spectroscopy
Oxalic acid
Photoelectrons
Physiochemistry
Recovery
Selective catalytic reduction
Titanium dioxide
Tungsten oxides
Vanadium pentoxide
title Study of the V2O5-WO3/TiO2 Catalyst Synthesized from Waste Catalyst on Selective Catalytic Reduction of NOx by NH3
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