catalysts Article Effect of Textural Properties and Presence of Co-Cation on NH3-SCR Activity of Cu-Exchanged ZSM-5 Magdalena Jabło ´nska 1,* , Kinga Góra-Marek 2 , Miha Grilc 3 , Paolo Cleto Bruzzese 4 , David Poppitz 1, Kamila Pyra 2 , Michael Liebau 1, Andreas Pöppl 4, Blaž Likozar 3 and Roger Gläser 1 1 Institute of Chemical Technology, Universität Leipzig, Linnéstr. 3, 04103 Leipzig, Germany;
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[email protected] (M.L.);
[email protected] (R.G.) 2 Faculty of Chemistry, Jagiellonian University in Kraków, Gronostajowa 2, 30-387 Kraków, Poland;
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[email protected] (K.P.) 3 Department of Catalysis and Chemical Reaction Engineering, National Institute of Chemistry, Hajdrihova 19, 1001 Ljubljana, Slovenia;
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[email protected] (B.L.) 4 Felix Bloch Institute for Solid State Physics, Universität Leipzig, Linnéstr. 5, 04103 Leipzig, Germany;
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[email protected] Abstract: Comparative studies over micro-/mesoporous Cu-containing zeolites ZSM-5 prepared by top-down treatment involving NaOH, TPAOH or mixture of NaOH/TPAOH (tetrapropylammonium hydroxide) were conducted. The results of the catalytic data revealed the highest activity of the Cu-ZSM-5 catalyst both in the absence and presence of water vapor. The physico-chemical charac- terization (diffuse reflectance UV-Vis (DR UV-Vis), Fourier transform infrared (FT-IR) spectroscopy, electron paramagnetic resonance (EPR) spectroscopy, temperature-programmed desorption of NOx Citation: Jabło´nska,M.; Góra-Marek, (TPD-NO ), and microkinetic modeling) results indicated that the microporous structure of ZSM-5 K.; Grilc, M.; Bruzzese, P.C.; Poppitz, x D.; Pyra, K.; Liebau, M.; Pöppl, A.; effectively stabilized isolated Cu ion monomers.