Journal ArticleDOI
Reaction Mechanism of Selective Catalytic Reduction of NO with NH3 over Fe-ZSM-5 Catalyst
Richard Q. Long,Ralph T. Yang +1 more
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TLDR
In this paper, the NO reduction mechanism is studied using combined in situ FTIR and online mass spectrometry (OMS) to analyze reaction products, and it is concluded that both NO and NO2 are involved in the reaction with NH4+ ions to form N2.About:
This article is published in Journal of Catalysis.The article was published on 2002-04-25. It has received 290 citations till now. The article focuses on the topics: Reaction mechanism & Qualitative inorganic analysis.read more
Citations
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Journal ArticleDOI
Selective Catalytic Reduction of NOx with NH3 by Using Novel Catalysts: State of the Art and Future Prospects.
Lupeng Han,Sixiang Cai,Sixiang Cai,Min Gao,Jun-ya Hasegawa,Penglu Wang,Jianping Zhang,Liyi Shi,Dengsong Zhang +8 more
TL;DR: This review summarizes the latest SCR reaction mechanisms and emerging poison-resistant mechanisms in the beginning and subsequently gives a comprehensive overview of newly developed SCR catalysts, including metal oxide catalysts ranging from VOx, MnOx, CeO2, and Fe2O3 to CuO based catalysts.
Journal ArticleDOI
Low-temperature selective catalytic reduction of NOx with NH3 over metal oxide and zeolite catalysts—A review
TL;DR: In this paper, two types of low-temperature catalysts, the metal oxide catalyst and metal exchanged zeolite catalyst, were reviewed for selective catalytic reduction of NO x with ammonia (NH 3 -SCR) especially at temperature below 200°C.
Journal ArticleDOI
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.
Journal ArticleDOI
Recent advances in automotive catalysis for NOx emission control by small-pore microporous materials
Andrew M. Beale,Andrew M. Beale,Feng Gao,Ines Lezcano-Gonzalez,Ines Lezcano-Gonzalez,Charles H. F. Peden,János Szanyi +6 more
TL;DR: This review briefly discusses the structure and preparation of the CHA structure-based zeolite catalysts, and summarizes the key learnings of the rather extensive (but not complete) characterisation work, and provides some mechanistic details emerging from these investigations.
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DRIFT study of manganese/ titania-based catalysts for low-temperature selective catalytic reduction of NO with NH3.
TL;DR: The DRIFT spectroscopy for the adsorption of NH3 indicated the presence of coordinated NH3 and NH4+ on both of the two catalysts, indicating these species could react with NO effectively.
References
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Journal ArticleDOI
Chemical and mechanistic aspects of the selective catalytic reduction of NOx by ammonia over oxide catalysts: A review
TL;DR: In this paper, the open literature concerning chemical and mechanistic aspects of the selective catalytic reduction of NO by ammonia (SCR process) on metal oxide catalysts is reviewed, and the results of spectroscopic studies of the adsorbed surface species, adsorption-desorption measurements, flow reactor and kinetic experiments are analyzed.
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Vanadia-Titania Catalysts for Selective Catalytic Reduction of Nitric-Oxide by Ammonia
TL;DR: In this article, the reaction mechanism and catalytic cycle for the selective catalytic reduction of nitric oxide by ammonia over vanadia/titania catalysts has been elucidated by in situ on-line FTIR studies under steady-state conditions.
Journal ArticleDOI
Investigations of the State of Fe in H–ZSM-5
TL;DR: In this article, the state of Fe dispersion in Fe-H-ZSM-5 was investigated by means of infrared spectroscopy of adsorbed NO, temperature-programmed desorption (TPD) of NO, TPD of NH3, and H2 temperatureprogrammed reduction (TPR).
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Superior Fe-ZSM-5 catalyst for selective catalytic reduction of nitric oxide by ammonia
Richard Q. Long,Ralph T. Yang +1 more
TL;DR: In this paper, the authors report a superior Fe-ZSM-5 catalyst that is much more active than the commercial vanadia catalysts and does not have the deficiencies associated with the vanadia catalyst.
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Selective reduction of NOx by methane on Co-ferrierites. II: Catalyst characterization
TL;DR: In this article, the adsorption of NO and NO2 was studied by diffuse-reflectance FTIR spectroscopy to discover which intermediates participate in the NOx reduction.