Spectroscopic studies of MFI and USY zeolite layers over stainless steel 316L wire gauze meshes
Authors:
- Ł. Kuterasiński,
- P. Bodzioch,
- K. Dymek,
- R. J. Jędrzejczyk,
- D. K. Chlebda,
- J. Łojewska,
- M. Sitarz,
- G. Kurowski,
- P. Jeleń,
- P. J. Jodłowski
Abstract
The objective of our study was to develop and optimize the in situ synthesis of zeolitic thin coatings with USY (ultrastabilised form of faujasite) and MFI (Model Five) type structure on metallic structured catalysts supports using the hydrothermal method. Thus, obtained zeolitic materials were studied in terms of their prospective activity in selective catalytic reduction of nitrogen oxides (SCR of NOx) with ammonia. Optimization of the preparation method consisted of several steps including: the pretreatment of steel carrier to obtain an adhesive surface, hydrothermal synthesis of zeolites at different conditions and adjustment of the zeolite structure type (MFI vs. USY). As a result, uniform zeolitic layers were deposited on steel supports. Prepared structured supports were ion-exchanged with copper or cobalt precursors to obtain active catalysts and then characterised by various physicochemical methods with a particular reference to the in situ Fourier-Transform Infrared Spectroscopy (FTIR), Ultraviolet–Visible Diffusion Reflectance Spectroscopy (DRS-UV/VIS) and Raman spectroscopy. For CuUSY sample, slightly better catalytic properties are related to higher copper content. In the case of Co-samples, worse catalytic properties in comparison with Cu counterparts might imply from higher concentration of Brønsted acid sites, lower cobalt loading (thus concentration of Lewis acid sites) and the presence of cobalt cation significantly in oxide form (evidenced by Raman, DRS-UV/VIS spectroscopy and by in situ FT-IR sorption studies).
- Record ID
- CUTaefe6886592c4107ab3088b277891d14
- Publication categories
- ;
- Author
- Journal series
- Spectrochimica Acta Part A: Molecular and Biomolecular Spectroscopy, ISSN 1386-1425
- Issue year
- 2020
- Vol
- 230
- Pages
- [1-12]
- Article number
- 118060
- Other elements of collation
- rys.; tab.; wykr.; Bibliografia (na s.) - 10-12; Bibliografia (liczba pozycji) - 66; Oznaczenie streszczenia - Abstr.; Numeracja w czasopiśmie - Vol. 230
- Keywords in English
- in situ hydrothermal synthesis, structured catalysts, zeolite, spectroscopic characterisation, SCR deNOx
- DOI
- DOI:10.1016/j.saa.2020.118060 Opening in a new tab
- URL
- https://www.sciencedirect.com/science/article/abs/pii/S1386142520300378 Opening in a new tab
- Related project
- Nowoczesne rozwiązania technologiczne dedykowane do usuwania zanieczyszczeń z silników i turbin biogazowych. Strukturalny konwerter katalityczny LZO i NOx. . Project leader at PK: , ,
Projects financed by NCRD [Projekty finansowane przez NCBiR (NCBR (] - Language
- eng (en) English
- Score (nominal)
- 140
- Additional fields
- Indeksowana w: Web of Science, Scopus
- Uniform Resource Identifier
- https://cris.pk.edu.pl/info/article/CUTaefe6886592c4107ab3088b277891d14/
- URN
urn:pkr-prod:CUTaefe6886592c4107ab3088b277891d14
* presented citation count is obtained through Internet information analysis, and it is close to the number calculated by the Publish or PerishOpening in a new tab system.