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Magnesium E ect in K/Co-Mg-Mn-Al Mixed Oxide Catalyst for Direct NO Decomposition.
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SYSNO ASEP 0540443 Druh ASEP J - Článek v odborném periodiku Zařazení RIV J - Článek v odborném periodiku Poddruh J Článek ve WOS Název Magnesium E ect in K/Co-Mg-Mn-Al Mixed Oxide Catalyst for Direct NO Decomposition. Tvůrce(i) Karásková, K. (CZ)
Pacultová, K. (CZ)
Klegová, A. (CZ)
Fridrichová, D. (CZ)
Valášková, M. (CZ)
Jirátová, Květa (UCHP-M) RID, ORCID, SAI
Stelmachowski, P. (PL)
Kotarba, A. (PL)
Obalová, L. (CZ)Číslo článku 931 Zdroj.dok. Catalysts. - : MDPI
Roč. 10, č. 8 (2020)Poč.str. 22 s. Jazyk dok. eng - angličtina Země vyd. CH - Švýcarsko Klíč. slova cobalt mixed oxide ; alkali promoter ; nitric oxide ; catalytic decomposition Vědní obor RIV CI - Průmyslová chemie a chemické inženýrství Obor OECD Chemical process engineering CEP GA18-19519S GA ČR - Grantová agentura ČR Způsob publikování Open access Institucionální podpora UCHP-M - RVO:67985858 UT WOS 000564805000001 EID SCOPUS 85089600056 DOI 10.3390/catal10080931 Anotace Emission of nitric oxide represents a serious environmental problem since it contributes to the formation of acid rain and photochemical smog. Potassium-modified Co-Mn-Al mixed oxide is an effective catalyst for NO decomposition. However, there are problems related to the thermal instability of potassium species and a high content of toxic and expensive cobalt. The reported research aimed to determine whether these shortcomings can be overcome by replacing cobalt with magnesium. Therefore, a series of Co-Mg-Mn-Al mixed oxides with different Co/Mg molar ratio and promoted by various content of potassium was investigated. The catalysts were thoroughly characterized by atomic absorption spectroscopy (AAS), temperature-programmed reduction by hydrogen (TPR-H2), temperature-programmed desorption of CO2 (TPD-CO2), X-ray powder diffraction (XRD), N2 physisorption, species-resolved thermal alkali desorption (SR-TAD), and tested in direct NO decomposition with and without the addition of oxygen and water vapor. Partial substitution of magnesium for cobalt did not cause an activity decrease when the optimal molar ratio of K/Co on the normalized surface area was maintained. It means that the portion of expensive and toxic cobalt can be successfully replaced by magnesium without any decrease in catalytic activity. Pracoviště Ústav chemických procesů Kontakt Eva Jirsová, jirsova@icpf.cas.cz, Tel.: 220 390 227 Rok sběru 2021 Elektronická adresa file:///C:/Users/jirsova/AppData/Local/Temp/catalysts-10-00931.pdf
Počet záznamů: 1