<abstract xmlns="http://www.w3.org/1999/xhtml"><p>In this study the physico-chemical and catalytic properties of copper bearing MFI zeolites (Cu-MFI) with different Si/Al and Si/Cu ratios were investigated. Two different methods for incorporation of metal ions into the zeolite framework were used: the ion exchange from the solution of copper acetate and the direct hydrothermal synthesis. Direct synthesis of a zeolite in the presence of copper-phosphate complexes was expected to generate more active copper species necessary for the desired reaction than the conventional ion exchange method. Direct decomposition of NO was used as a model reaction, because this reaction still offers a very attractive approach to NO<sub>X</sub> removal. The catalytic properties of zeolite samples were studied using techniques, such as XRD, SEM, EPR and nitrogen adsorption/desorption measurements at 77 K. Results of the kinetic investigation revealed that both methods are applicable for the preparation of the catalysts with active sites capable of catalyzing the NO decomposition. It was found out that Cu-MFI zeolites obtained through direct synthesis are promising catalysts for NO decomposition, especially at lower reaction temperatures. The efﬁciency of the catalysts prepared by both methods is compared and discussed.</p></abstract>

In this study the physico-chemical and catalytic properties of copper bearing MFI zeolites (Cu-MFI) with different Si/Al and Si/Cu ratios were investigated. Two different methods for incorporation of metal ions into the zeolite framework were used: the ion exchange from the solution of copper acetate and the direct hydrothermal synthesis. Direct synthesis of a zeolite in the presence of copper-phosphate complexes was expected to generate more active copper species necessary for the desired reaction than the conventional ion exchange method. Direct decomposition of NO was used as a model reaction, because this reaction still offers a very attractive approach to NOX removal. The catalytic properties of zeolite samples were studied using techniques, such as XRD, SEM, EPR and nitrogen adsorption/desorption measurements at 77 K. Results of the kinetic investigation revealed that both methods are applicable for the preparation of the catalysts with active sites capable of catalyzing the NO decomposition. It was found out that Cu-MFI zeolites obtained through direct synthesis are promising catalysts for NO decomposition, especially at lower reaction temperatures. The efﬁciency of the catalysts prepared by both methods is compared and discussed.

Synthesis and characterization of Cu-MFI catalyst for the direct medium temperature range NO decomposition

Faculty of Chemical Engineering and Technology, University of Zagreb, Marulićev trg 19, 10000 Zagreb,

Universita della Calabria, Dipartimento di Ingegneria per l’Ambiente e il Territorio e Ingegneria Chimica, Ponte P. Bucci, Cubo 45 A, 87036 Rende (CS),

Polish Academy of Sciences, Institute of Metallurgy and Materials Science, Reymonta 25, 30-059 Kraków,

Materials Science-Poland

This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 3.0 License.

In this study the physico-chemical and catalytic properties of copper bearing MFI zeolites (Cu-MFI) with different Si/Al and Si/Cu ratios were investigated....

Synthesis and characterization of Cu-MFI catalyst for the direct medium temperature range NO decomposition

Article Category: Research Article

Publié en ligne: 27 avr. 2016

Pages: 177 - 184

Reçu: 12 oct. 2015

Accepté: 03 déc. 2015

DOI: https://doi.org/10.1515/msp-2016-0018

Mots clés
Cu-MFI zeolite, catalytic properties, direct hydrothermal synthesis, NO decomposition, medium reaction temperature range, redox properties

© 2016 Wroclaw University of Technology

This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 3.0 License.

Synthesis and characterization of Cu-MFI catalyst for the direct medium temperature range NO decomposition

Article Category: Research Article

Publié en ligne: 27 avr. 2016

Pages: 177 - 184

Reçu: 12 oct. 2015

Accepté: 03 déc. 2015

DOI: https://doi.org/10.1515/msp-2016-0018

Mots clésCu-MFI zeolite, catalytic properties, direct hydrothermal synthesis, NO decomposition, medium reaction temperature range, redox properties

© 2016 Wroclaw University of Technology

This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 3.0 License.

Mots clés
Cu-MFI zeolite, catalytic properties, direct hydrothermal synthesis, NO decomposition, medium reaction temperature range, redox properties