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Formation and Effect of NH₄⁺ Intermediates in NH₃-SCR over Fe-ZSM-5 Zeolite Catalysts

Title data

Chen, Peirong ; Jabłońska, Magdalena ; Weide, Philipp ; Caumanns, Tobias ; Weirich, Thomas ; Muhler, Martin ; Moos, Ralf ; Palkovits, Regina ; Simon, Ulrich:
Formation and Effect of NH₄⁺ Intermediates in NH₃-SCR over Fe-ZSM-5 Zeolite Catalysts.
In: ACS Catalysis. Vol. 6 (2016) . - pp. 7696-7700.
ISSN 2155-5435
DOI: https://doi.org/10.1021/acscatal.6b02496

Project information

Project title:
Project's official titleProject's id
No informationMO 1060/19-1

Project financing: Deutsche Forschungsgemeinschaft

Abstract in another language

With the help of a technique combining in situ electrical impedance spectroscopy and DRIFT spectroscopy, we observed directly the formation of ammonium ion (NH4+) intermediates resulting from the interaction of NO and NH3 on Fe-ZSM-5 catalysts for selective catalytic reduction by NH3 (NH3–SCR). The formed NH4+ intermediates, indicating the activation of NO in the presence of adsorbed NH3, were found to be strongly related to the NH3–SCR activity of Fe-ZSM-5 catalysts at low temperatures. These findings, which are not easily achievable by conventional methods, provide new and important perspectives to understand mechanistically the NH3–SCR reaction over Fe-zeolite catalysts.

Further data

Item Type: Article in a journal
Refereed: Yes
Institutions of the University: Faculties > Faculty of Engineering Science
Faculties > Faculty of Engineering Science > Chair Functional Materials > Chair Functional Materials - Univ.-Prof. Dr.-Ing. Ralf Moos
Profile Fields > Advanced Fields > Advanced Materials
Research Institutions > Research Centres > Bayreuth Center for Material Science and Engineering - BayMAT
Research Institutions > Research Units > ZET - Zentrum für Energietechnik
Research Institutions > Research Units > BERC - Bayreuth Engine Research Center
Faculties
Faculties > Faculty of Engineering Science > Chair Functional Materials
Profile Fields
Profile Fields > Advanced Fields
Research Institutions
Research Institutions > Research Centres
Research Institutions > Research Units
Result of work at the UBT: Yes
DDC Subjects: 600 Technology, medicine, applied sciences > 620 Engineering
Date Deposited: 17 Oct 2016 11:55
Last Modified: 17 Oct 2016 11:55
URI: https://eref.uni-bayreuth.de/id/eprint/34948