Nanosized Cu-SSZ-13 and Its Application in NH3-SCR

Palčić, Ana; Cleto Bruzzese, Paolo; Pyra, Kamila; Bertmer, Marko; Góra-Marek, Kinga; Poppitz, David; Pöppl, Andreas; Gläser, Roger; Jabłońska, Magdalena (2020) Nanosized Cu-SSZ-13 and Its Application in NH3-SCR. Catalysts, 10 (5). ISSN 2073-4344

Preview

PDF - Published Version - article Available under License Creative Commons Attribution. Download (3MB) | Preview

Abstract

Nanosized SSZ-13 was synthesized hydrothermally by applying N, N, N-trimethyl-1-adamantammonium hydroxide (TMAdaOH) as a structure-directing agent. In the next step, the quantity of TMAdaOH in the initial synthesis mixture of SSZ-13 was reduced by half. Furthermore, we varied the sodium hydroxide concentration. After ion-exchange with copper ions (Cu2+ and Cu+), the Cu-SSZ-13 catalysts were characterized to explore their framework composition (XRD, solid-state NMR, ICP-OES), texture (N2-sorption, SEM) and acid/redox properties (FT-IR, TPR-H2, DR UV-Vis, EPR). Finally, the materials were tested in the selective catalytic reduction of NOx with ammonia (NH3-SCR). The main difference between the Cu-SSZ-13 catalysts was the number of Cu2+ in the double six-membered ring (6MRs). Such copper species contribute to a high NH3-SCR activity. Nevertheless, all materials show comparable activity in NH3-SCR up to 350 °C. Above 350 °C, NO conversion decreased for Cu-SSZ-13(2–4) due to side reaction of NH3 oxidation.

Item Type:	Article
Uncontrolled Keywords:	chabazite ; SSZ-13 ; preparation method ; copper species ; IR spectroscopy ; NH3-SCR
Subjects:	NATURAL SCIENCES > Chemistry
Divisions:	Division of Materials Chemistry
Projects:	Project title Project leader Project code Project type Zeoliti s malim šupljinama modificirani bakrom pogodni za primjenu u zaštiti okoliša-SMALLPORE Ana Palčić UIP-2019-04-4977 HRZZ
Depositing User:	Ana Palčić
Date Deposited:	07 Dec 2020 12:55
URI:	http://fulir.irb.hr/id/eprint/6084
DOI:	10.3390/catal10050506

Actions (login required)

View Item