Journal ArticleDOI
Enhanced reoxidation of vanadia by NO2 in the fast SCR reaction
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TLDR
In this paper, the authors investigated the role of NO2 on catalysts based on TiO2-WO3-V2O5 and showed that the vanadium species formed during the reduction of NO with ammonia are reoxidized faster by NO2 than by oxygen, resulting in an increased reaction rate of the fast SCR reaction.About:
This article is published in Journal of Catalysis.The article was published on 2002-07-01. It has received 170 citations till now. The article focuses on the topics: Reaction rate & Catalysis.read more
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Journal ArticleDOI
MnOx-CeO2 mixed oxides prepared by co-precipitation for selective catalytic reduction of NO with NH3 at low temperatures
TL;DR: In this paper, a series of manganese-cerium oxide catalysts were prepared by co-precipitation method and used for low temperature selective catalytic reduction of NO x with ammonia in the presence of excess O 2.
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The State of the Art in Selective Catalytic Reduction of NOx by Ammonia Using Metal‐Exchanged Zeolite Catalysts
TL;DR: An overview of the selective catalytic reduction of NOx by ammonia (NH3•SCR) over metal-exchanged zeolites is given in this paper, where a comparison of Fe•ZSM•5 catalysts prepared by different methods and research groups shows that the preparation method is not a decisive factor in determining catalytic activity.
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The chemistry of the NO/NO2–NH3 “fast” SCR reaction over Fe-ZSM5 investigated by transient reaction analysis
TL;DR: In this article, the authors present a systematic study of the chemical steps in the NO/NO2−NH3 fast SCR reaction 2NH3+NO+NO2 → 2N2+3H2O over a commercial Fe-ZSM5 catalyst.
Journal ArticleDOI
Rational Design of High-Performance DeNOx Catalysts Based on MnxCo3–xO4 Nanocages Derived from Metal–Organic Frameworks
TL;DR: In this paper, a deNOx catalyst based on hollow porous MnxCo3-xO4 nanocages with a spinel structure thermally derived from nanocube-like metal-organic frameworks (Mn3[Co(CN)6]2·nH2O), which are synthesized via a self-assemble method, is presented.
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Characterization and FTIR Studies of MnOx−CeO2 Catalyst for Low-Temperature Selective Catalytic Reduction of NO with NH3
Gongshin Qi,Ralph T. Yang +1 more
TL;DR: In this article, a series of high-activity manganese−cerium oxide catalysts for the low-temperature (373−453 K) selective catalytic reduction (SCR) of NOx with ammonia were prepared.
References
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Journal ArticleDOI
Urea-SCR: a promising technique to reduce NOx emissions from automotive diesel engines
TL;DR: In this article, the authors discuss the fundamental problems and challenges if urea-SCR is extended to mobile applications, including the control strategy for urea dosing, the high freezing point of urea, and the long term stability of the catalyst.
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Mechanism of the Selective Catalytic Reduction of Nitric Oxide by Ammonia Elucidated by in Situ On-Line Fourier Transform Infrared Spectroscopy
TL;DR: A fundamental microkinetic model is proposed, which accounts for the observed industrial kinetics performance and suggests a catalytic cycle that consists of both acid and redox reactions and involves both surface V-OH (Brønsted acid sites) and V=O species.
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Laser raman spectroscopy of supported vanadium oxide catalysts
TL;DR: In this paper, the effects of vanadia loading and support composition on the structure of the dispersed vanadia species were studied by Raman spectroscopy to establish the effect of supporting vanadia catalysts.
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Fourier transform-infrared study of the adsorption and coadsorption of nitric oxide, nitrogen dioxide and ammonia on vanadia-titania and mechanism of selective catalytic reduction
TL;DR: In this paper, the adsorption of nitric oxide, nitrogen dioxide and ammonia and their coadsorption on vanadia-titania have been studied by FT-IR spectroscopy.