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Structural and Functional Behaviour of Ce-Doped Wide-Bandgap Semiconductors for Photo-Catalytic Applications

Cu/ZSM5-Geopolymer 3D-Printed Monoliths for the NH3-SCR of NOx

Istituto di Scienze e Tecnologie per l’Energia e la Mobilità Sostenibili (STEMS), Consiglio Nazionale delle Ricerche (CNR), Via Guglielmo Marconi 4/10, 80125 Napoli, Italy
Dipartimento di Ingegneria Industriale, Università degli Studi di Padova, Via Gradenigo, 6/a, 35131 Padova, Italy
Author to whom correspondence should be addressed.
Academic Editors: Leonarda Francesca Liotta and Valeria La Parola
Catalysts 2021, 11(10), 1212;
Received: 15 September 2021 / Revised: 4 October 2021 / Accepted: 6 October 2021 / Published: 9 October 2021
(This article belongs to the Special Issue Women in Catalysts)
Geopolymer-based monoliths manufactured by direct ink writing, containing up to 60% by weight of presynthesized ZSM5 with low Si/Al ratio, were investigated as structured catalysts for the NH3-SCR of NOx. Copper was introduced as the active metal by ion exchange after a preliminary acid treatment of the monoliths. Monolithic catalysts were characterized by morphological (XRD and SEM), textural (BET and pore size distribution), mechanical (compressive strength), chemical (ICP–MS), redox (H2-TPR) and surface (NH3-TPD) analyses, showing the preservation of Cu-exchanged zeolite features in the composite monoliths. NH3-SCR tests, carried out on both monolithic and powdered samples in the temperature range 70–550 °C, confirmed that composite monoliths provide a very good activity and a high selectivity to N2 over the whole range of temperatures explored due to the hierarchical structure of the materials, in addition to a good mechanical resistance—mostly related to the geopolymer matrix. View Full-Text
Keywords: structured catalysts; additive manufacturing; zeolite; DeNOx structured catalysts; additive manufacturing; zeolite; DeNOx
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MDPI and ACS Style

Cepollaro, E.M.; Botti, R.; Franchin, G.; Lisi, L.; Colombo, P.; Cimino, S. Cu/ZSM5-Geopolymer 3D-Printed Monoliths for the NH3-SCR of NOx. Catalysts 2021, 11, 1212.

AMA Style

Cepollaro EM, Botti R, Franchin G, Lisi L, Colombo P, Cimino S. Cu/ZSM5-Geopolymer 3D-Printed Monoliths for the NH3-SCR of NOx. Catalysts. 2021; 11(10):1212.

Chicago/Turabian Style

Cepollaro, Elisabetta Maria, Renata Botti, Giorgia Franchin, Luciana Lisi, Paolo Colombo, and Stefano Cimino. 2021. "Cu/ZSM5-Geopolymer 3D-Printed Monoliths for the NH3-SCR of NOx" Catalysts 11, no. 10: 1212.

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