Catalytic Removal of NOx on Ceramic Foam-Supported ZnO and TiO 2 Nanorods Ornamented with W and V Oxides

Maciej Kapkowski, Tomasz Siudyga, Piotr Bartczak, Maciej Zubko, Rafal Sitko, Jacek Szade, Katarzyna Balin, Bartłomiej S. Witkowski, Monika Ożga, Rafał Pietruszka, Marek Godlewski and Jaroslaw Polanski
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Maciej Kapkowski: Faculty of Science and Technology, Institute of Chemistry, University of Silesia, Szkolna 9, 40-006 Katowice, Poland
Tomasz Siudyga: Faculty of Science and Technology, Institute of Chemistry, University of Silesia, Szkolna 9, 40-006 Katowice, Poland
Piotr Bartczak: Faculty of Science and Technology, Institute of Chemistry, University of Silesia, Szkolna 9, 40-006 Katowice, Poland
Maciej Zubko: Faculty of Science and Technology, Institute of Materials Engineering, University of Silesia, 75 Pułku Piechoty 1A, 41-500 Chorzów, Poland
Rafal Sitko: Faculty of Science and Technology, Institute of Chemistry, University of Silesia, Szkolna 9, 40-006 Katowice, Poland
Jacek Szade: Faculty of Science and Technology, August Chełkowski Institute of Physics, University of Silesia, 75 Pułku Piechoty 1A, 41-500 Chorzów, Poland
Katarzyna Balin: Faculty of Science and Technology, August Chełkowski Institute of Physics, University of Silesia, 75 Pułku Piechoty 1A, 41-500 Chorzów, Poland
Bartłomiej S. Witkowski: Institute of Physics, Polish Academy of Sciences, Al. Lotników 32/46, 02668 Warsaw, Poland
Monika Ożga: Institute of Physics, Polish Academy of Sciences, Al. Lotników 32/46, 02668 Warsaw, Poland
Rafał Pietruszka: Institute of Physics, Polish Academy of Sciences, Al. Lotników 32/46, 02668 Warsaw, Poland
Marek Godlewski: Institute of Physics, Polish Academy of Sciences, Al. Lotników 32/46, 02668 Warsaw, Poland
Jaroslaw Polanski: Faculty of Science and Technology, Institute of Chemistry, University of Silesia, Szkolna 9, 40-006 Katowice, Poland

Energies, 2022, vol. 15, issue 5, 1-13

Abstract: Energy consumption steadily increases and energy production is associated with many environmental risks, e.g., generating the largest share of greenhouse gas emissions. The primary gas pollution concern is CO 2 , CH 4 , and nitrogen oxides (NOx). Environmental catalysis plays a pivotal role in NOx mitigation (DeNOx). This study investigated, for the first time, a collection of ceramic foams as potential catalyst support for selective catalytic NOx reduction (SCR). Ceramic foams could be an attractive support option for NOx removal. However, we should functionalize the surface of raw foams for such applications. A library of ceramic SiC, Al 2 O 3 , and ZrO 2 foams ornamented with nanorod ZnO and TiO 2 as W and V oxide support was obtained for the first time. We characterized the surface layer coating structure using the XPS, XRF and SEM, and TEM microscopy to optimize the W to V molar ratio and examine NO 2 mitigation as the SCR model, which was tested only very rarely. Comparing TiO 2 and ZnO systems reveals that the SCR conversion on ZnO appeared superior vs. the conversion on TiO 2 , while the SiC-supported catalysts were less efficient than Al 2 O 3 and ZrO 2 -supported catalysts. The energy bands in optical spectra correlate with the observed activity rank.

Keywords: ceramic foams; ZnO nanorods; TiO 2 nanorods; NOx mitigation (deNOx); environmental nanocatalysis; selective catalytic reduction SCR; W and V catalytic sites (search for similar items in EconPapers)
JEL-codes: Q Q0 Q4 Q40 Q41 Q42 Q43 Q47 Q48 Q49 (search for similar items in EconPapers)
Date: 2022
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