Počet záznamů: 1
Effect of Zinc on the Structure and Activity of the Cobalt Oxide Catalysts for NO Decomposition
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SYSNO ASEP 0569340 Druh ASEP J - Článek v odborném periodiku Zařazení RIV J - Článek v odborném periodiku Poddruh J Článek ve WOS Název Effect of Zinc on the Structure and Activity of the Cobalt Oxide Catalysts for NO Decomposition Tvůrce(i) Karásková, K. (CZ)
Pacultová, K. (CZ)
Bílková, T. (CZ)
Fridrichová, D. (CZ)
Koštejn, Martin (UCHP-M) RID, SAI, ORCID
Peikertová, P. (CZ)
Stelmachowski, P. (PL)
Kukula, P. (CZ)
Obalová, L. (CZ)Číslo článku 18 Zdroj.dok. Catalysts. - : MDPI
Roč. 13, č. 1 (2023)Poč.str. 22 s. Jazyk dok. eng - angličtina Země vyd. CH - Švýcarsko Klíč. slova nitric oxide ; catalytic decomposition ; Co-spinel ; Zn bulk promotion Obor OECD Chemical process engineering Způsob publikování Open access Institucionální podpora UCHP-M - RVO:67985858 UT WOS 000916909700001 EID SCOPUS 85146781030 DOI 10.3390/catal13010018 Anotace Co4-iZniMnAlOx mixed oxides (i = 0, 0.5 and 1) were prepared by coprecipitation, subsequently modified with potassium (2 or 4 wt.% K), and investigated for direct catalytic NO decomposition, one of the most attractive and challenging NOx abatement processes. The catalysts were characterised by atomic absorption spectroscopy, powder X-ray diffraction, Raman and infrared spectroscopy, temperature-programmed reduction by hydrogen, the temperature-programmed desorption of CO2 and NO, X-ray photoelectron spectroscopy, scanning electron microscopy, the work function, and N-2 physisorption. The partial substitution of cobalt increased the specific surface area, decreased the pore sizes, influenced the surface composition, and obtained acid-base properties as a result of the higher availability of medium and strong basic sites. No visible changes in the morphology, crystallite size, and work function were observed upon the cobalt substitution. The conversion of NO increased after the Co substitution, however, the increase in the amount of zinc did not affect the catalytic activity, whereas a higher amount of potassium caused a decrease in the NO conversion. The results obtained, which were predominantly the acid-base characteristics of the catalyst, are in direct correlation with the proposed NO decomposition reaction mechanisms with NOx- as the main reaction intermediates. Pracoviště Ústav chemických procesů Kontakt Eva Jirsová, jirsova@icpf.cas.cz, Tel.: 220 390 227 Rok sběru 2023 Elektronická adresa https://www.mdpi.com/2073-4344/13/1/18
Počet záznamů: 1