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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| Format: | Article |
| Language: | English |
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Wiley
2018-01-01
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| Series: | Journal of Chemistry |
| Online Access: | http://dx.doi.org/10.1155/2018/8614747 |
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| author | Siva Sankar Reddy Putluru Leonhard Schill Anker Degn Jensen Rasmus S. N. Fehrmann |
| author_facet | Siva Sankar Reddy Putluru Leonhard Schill Anker Degn Jensen Rasmus S. N. Fehrmann |
| author_sort | Siva Sankar Reddy Putluru |
| collection | DOAJ |
| 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. |
| format | Article |
| id | doaj-art-8fb3654f367e4b89a4f5369ca11c56da |
| institution | OA Journals |
| issn | 2090-9063 2090-9071 |
| language | English |
| publishDate | 2018-01-01 |
| publisher | Wiley |
| record_format | Article |
| series | Journal of Chemistry |
| spelling | doaj-art-8fb3654f367e4b89a4f5369ca11c56da2025-08-20T02:09:29ZengWileyJournal 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 |
| 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 |
| title | 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_short | 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 |
| 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 |