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Open AccessArticle

DeNOx Abatement over Sonically Prepared Iron-Substituted Y, USY and MFI Zeolite Catalysts in Lean Exhaust Gas Conditions

1
Faculty of Chemistry, Jagiellonian University, Gronostajowa 2, 30-387 Kraków, Poland
2
Faculty of Chemical Engineering and Technology, Cracow University of Technology, Warszawska 24, 31-155 Kraków, Poland
3
Malopolska Centre of Biotechnology, Jagiellonian University, Gronostajowa 7A, 30-387 Kraków, Poland
4
Jerzy Haber Institute of Catalysis and Surface Chemistry, Polish Academy of Sciences, Niezapominajek 8, 30-239 Kraków, Poland
5
Faculty of Materials Science and Ceramics, AGH University of Science and Technology, al. Mickiewicza 30, 30-059 Kraków, Poland
*
Author to whom correspondence should be addressed.
Nanomaterials 2018, 8(1), 21; https://doi.org/10.3390/nano8010021
Received: 9 November 2017 / Revised: 19 December 2017 / Accepted: 30 December 2017 / Published: 3 January 2018
(This article belongs to the Special Issue Nanosized Zeolites and their Applications)
Iron-substituted MFI, Y and USY zeolites prepared by two preparation routes—classical ion exchange and the ultrasound modified ion-exchange method—were characterised by micro-Raman spectroscopy, X-ray diffraction (XRD), scanning electron microscopy (SEM), and ultraviolet (UV)/visible diffuse reflectance spectroscopy (UV/Vis DRS). Ultrasound irradiation, a new technique for the preparation of the metal salt suspension before incorporation to the zeolite structure, was employed. An experimental study of selective catalytic reduction (SCR) of NO with NH3 on both iron-substituted reference zeolite catalysts and those prepared through the application of ultrasound conducted during an ion-exchange process is presented. The prepared zeolite catalysts show high activity and selectivity in SCR deNOx abatement. The MFI-based iron catalysts, especially those prepared via the sonochemical method, revealed superior activity in the deNOx process, with almost 100% selectivity towards N2. The hydrothermal stability test confirmed high stability and activity of MFI-based catalysts in water-rich conditions during the deNOx reaction at 450 °C. View Full-Text
Keywords: deNOx selective catalytic reduction (SCR); zeolites; sonochemistry; iron oxide; Fe-zeolites deNOx selective catalytic reduction (SCR); zeolites; sonochemistry; iron oxide; Fe-zeolites
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MDPI and ACS Style

Chlebda, D.K.; Stachurska, P.; Jędrzejczyk, R.J.; Kuterasiński, Ł.; Dziedzicka, A.; Górecka, S.; Chmielarz, L.; Łojewska, J.; Sitarz, M.; Jodłowski, P.J. DeNOx Abatement over Sonically Prepared Iron-Substituted Y, USY and MFI Zeolite Catalysts in Lean Exhaust Gas Conditions. Nanomaterials 2018, 8, 21. https://doi.org/10.3390/nano8010021

AMA Style

Chlebda DK, Stachurska P, Jędrzejczyk RJ, Kuterasiński Ł, Dziedzicka A, Górecka S, Chmielarz L, Łojewska J, Sitarz M, Jodłowski PJ. DeNOx Abatement over Sonically Prepared Iron-Substituted Y, USY and MFI Zeolite Catalysts in Lean Exhaust Gas Conditions. Nanomaterials. 2018; 8(1):21. https://doi.org/10.3390/nano8010021

Chicago/Turabian Style

Chlebda, Damian K.; Stachurska, Patrycja; Jędrzejczyk, Roman J.; Kuterasiński, Łukasz; Dziedzicka, Anna; Górecka, Sylwia; Chmielarz, Lucjan; Łojewska, Joanna; Sitarz, Maciej; Jodłowski, Przemysław J. 2018. "DeNOx Abatement over Sonically Prepared Iron-Substituted Y, USY and MFI Zeolite Catalysts in Lean Exhaust Gas Conditions" Nanomaterials 8, no. 1: 21. https://doi.org/10.3390/nano8010021

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