Selective Catalytic Reduction of NOx with NH3 on Cu-, Fe-, and Mn-Zeolites Prepared by Impregnation: Comparison of Activity and Hydrothermal Stability

Selective Catalytic Reduction of NOx with NH3 on Cu-, Fe-, and Mn-Zeolites Prepared by Impregnation: Comparison of Activity and Hydrothermal Stability

Cu-, Fe-, and Mn-zeolite (SSZ-13, ZSM-5, and BEA) catalysts have been prepared by incipient wetness impregnation and characterized by N2 physisorption, H2-TPR, NH3-TPD, and XPS methods. Both metal and zeolite support influence the deNOx activity and hydrothermal stability. Cu-zeolites and Mn-zeolite...

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Main Authors: Siva Sankar Reddy Putluru, Leonhard Schill, Anker Degn Jensen, Rasmus S. N. Fehrmann
Format: Article
Language:English
Published: Hindawi Limited 2018-01-01
Series:Journal of Chemistry
Online Access:http://dx.doi.org/10.1155/2018/8614747
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spelling doaj-8fb3654f367e4b89a4f5369ca11c56da2020-11-25T01:18:29ZengHindawi LimitedJournal of Chemistry2090-90632090-90712018-01-01201810.1155/2018/86147478614747Selective Catalytic Reduction of NOx with NH3 on Cu-, Fe-, and Mn-Zeolites Prepared by Impregnation: Comparison of Activity and Hydrothermal StabilitySiva Sankar Reddy Putluru0Leonhard Schill1Anker Degn Jensen2Rasmus S. N. Fehrmann3Centre for Catalysis and Sustainable Chemistry, Department of Chemistry, Technical University of Denmark, Building 207, DK-2800 Kgs. Lyngby, DenmarkCentre for Catalysis and Sustainable Chemistry, Department of Chemistry, Technical University of Denmark, Building 207, DK-2800 Kgs. Lyngby, DenmarkCHEC Research Center, Department of Chemical and Biochemical Engineering, Technical University of Denmark, Building 229, DK-2880 Kgs. Lyngby, DenmarkCentre for Catalysis and Sustainable Chemistry, Department of Chemistry, Technical University of Denmark, Building 207, DK-2800 Kgs. Lyngby, DenmarkCu-, Fe-, and Mn-zeolite (SSZ-13, ZSM-5, and BEA) catalysts have been prepared by incipient wetness impregnation and characterized by N2 physisorption, H2-TPR, NH3-TPD, and XPS methods. Both metal and zeolite support influence the deNOx activity and hydrothermal stability. Cu-zeolites and Mn-zeolites showed medium temperature activity, and Fe zeolites showed high temperature activity. Among all the catalysts, Cu-SSZ-13 and Fe-BEA are the most promising hydrothermally resistant catalysts. Fresh and hydrothermally treated catalysts were further examined to investigate the acidic and redox properties and the zeolite surface composition. Increased total acidity after metal impregnation and loss of acidity due to hydrothermal treatment were observed in all the catalysts. Hydrothermal treatment resulted in migration of metal or in strong metal support interations, whereby changes in reduction patterns are observed.http://dx.doi.org/10.1155/2018/8614747
collection DOAJ
language English
format Article
sources DOAJ
author Siva Sankar Reddy Putluru
Leonhard Schill
Anker Degn Jensen
Rasmus S. N. Fehrmann
spellingShingle Siva Sankar Reddy Putluru
Leonhard Schill
Anker Degn Jensen
Rasmus S. N. Fehrmann
Selective Catalytic Reduction of NOx with NH3 on Cu-, Fe-, and Mn-Zeolites Prepared by Impregnation: Comparison of Activity and Hydrothermal Stability
Journal of Chemistry
author_facet Siva Sankar Reddy Putluru
Leonhard Schill
Anker Degn Jensen
Rasmus S. N. Fehrmann
author_sort Siva Sankar Reddy Putluru
title Selective Catalytic Reduction of NOx with NH3 on Cu-, Fe-, and Mn-Zeolites Prepared by Impregnation: Comparison of Activity and Hydrothermal Stability
title_short Selective Catalytic Reduction of NOx with NH3 on Cu-, Fe-, and Mn-Zeolites Prepared by Impregnation: Comparison of Activity and Hydrothermal Stability
title_full Selective Catalytic Reduction of NOx with NH3 on Cu-, Fe-, and Mn-Zeolites Prepared by Impregnation: Comparison of Activity and Hydrothermal Stability
title_fullStr Selective Catalytic Reduction of NOx with NH3 on Cu-, Fe-, and Mn-Zeolites Prepared by Impregnation: Comparison of Activity and Hydrothermal Stability
title_full_unstemmed Selective Catalytic Reduction of NOx with NH3 on Cu-, Fe-, and Mn-Zeolites Prepared by Impregnation: Comparison of Activity and Hydrothermal Stability
title_sort selective catalytic reduction of nox with nh3 on cu-, fe-, and mn-zeolites prepared by impregnation: comparison of activity and hydrothermal stability
publisher Hindawi Limited
series Journal of Chemistry
issn 2090-9063
2090-9071
publishDate 2018-01-01
description Cu-, Fe-, and Mn-zeolite (SSZ-13, ZSM-5, and BEA) catalysts have been prepared by incipient wetness impregnation and characterized by N2 physisorption, H2-TPR, NH3-TPD, and XPS methods. Both metal and zeolite support influence the deNOx activity and hydrothermal stability. Cu-zeolites and Mn-zeolites showed medium temperature activity, and Fe zeolites showed high temperature activity. Among all the catalysts, Cu-SSZ-13 and Fe-BEA are the most promising hydrothermally resistant catalysts. Fresh and hydrothermally treated catalysts were further examined to investigate the acidic and redox properties and the zeolite surface composition. Increased total acidity after metal impregnation and loss of acidity due to hydrothermal treatment were observed in all the catalysts. Hydrothermal treatment resulted in migration of metal or in strong metal support interations, whereby changes in reduction patterns are observed.
url http://dx.doi.org/10.1155/2018/8614747
work_keys_str_mv AT sivasankarreddyputluru selectivecatalyticreductionofnoxwithnh3oncufeandmnzeolitespreparedbyimpregnationcomparisonofactivityandhydrothermalstability
AT leonhardschill selectivecatalyticreductionofnoxwithnh3oncufeandmnzeolitespreparedbyimpregnationcomparisonofactivityandhydrothermalstability
AT ankerdegnjensen selectivecatalyticreductionofnoxwithnh3oncufeandmnzeolitespreparedbyimpregnationcomparisonofactivityandhydrothermalstability
AT rasmussnfehrmann selectivecatalyticreductionofnoxwithnh3oncufeandmnzeolitespreparedbyimpregnationcomparisonofactivityandhydrothermalstability
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