Effect of Textural Properties and Presence of Co-Cation on NH3-SCR Activity of Cu-Exchanged ZSM-5
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; david.poppitz@uni-leipzig.de (D.P.); michael.liebau@uni-leipzig.de (M.L.); roger.glaeser@uni-leipzig.de (R.G.) 2 Faculty of Chemistry, Jagiellonian University in Kraków, Gronostajowa 2, 30-387 Kraków, Poland; kinga.gora-marek@uj.edu.pl (K.G.-M.); kamila.pyra@doctoral.uj.edu.pl (K.P.) 3 Department of Catalysis and Chemical Reaction Engineering, National Institute of Chemistry, Hajdrihova 19, 1001 Ljubljana, Slovenia; Miha.Grilc@ki.si (M.G.); blaz.likozar@ki.si (B.L.) 4 Felix Bloch Institute for Solid State Physics, Universität Leipzig, Linnéstr. 5, 04103 Leipzig, Germany; paolo.bruzzese@physik.uni-leipzig.de (P.C.B.); poeppl@physik.uni-leipzig.de (A.P.) * Correspondence: magdalena.jablonska@uni-leipzig.de 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.
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