Počet záznamů: 1  

Effect of Promoters in Co-Mn-Al Mixed Oxide Catalyst on N2O Decomposition

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    SYSNO ASEP0343774
    Druh ASEPJ - Článek v odborném periodiku
    Zařazení RIVJ - Článek v odborném periodiku
    Poddruh JČlánek ve WOS
    NázevEffect of Promoters in Co-Mn-Al Mixed Oxide Catalyst on N2O Decomposition
    Tvůrce(i) Karásková, K. (CZ)
    Obalová, L. (CZ)
    Jirátová, Květa (UCHP-M) RID, ORCID, SAI
    Kovanda, F. (CZ)
    Zdroj.dok.Chemical Engineering Journal. - : Elsevier - ISSN 1385-8947
    Roč. 160, č. 2 (2010), s. 480-487
    Poč.str.8 s.
    Jazyk dok.eng - angličtina
    Země vyd.NL - Nizozemsko
    Klíč. slovanitrous oxide ; catalytic decomposition ; promoter effect
    Vědní obor RIVCI - Průmyslová chemie a chemické inženýrství
    CEPGA106/09/1664 GA ČR - Grantová agentura ČR
    CEZAV0Z40720504 - UCHP-M (2005-2011)
    UT WOS000279137900012
    DOI10.1016/j.cej.2010.03.058
    AnotaceCatalytic decomposition of N2O over calcined Co-Mn-Al layered double hydroxide (LDH) modified with slight amount of alkali (Li, Na, K), rare earth (La, Ce), or noble metals (Pd, Pt) was studied. The method of preparation (impregnation, coprecipitation) affected the reducibility of the obtained mixed oxide catalysts but its effect on the surface area (with the exception of a cerium-contained sample) and N2O conversion was less evident. The modification of the Co-Mn-Al mixed oxide with K or Na increased N2O conversion, while no effect or a decrease in the N2O conversion was observed over the other examined catalysts. Alkali metals act as electron promoters; therefore, the differences in catalytic activity may be related to changes of oxygen-transition metal bond strength. The Co-Mn-Al mixed oxides with 1.8 wt% K exhibited a high catalytic activity even under the simultaneous presence of O2, H2O and NOx.
    PracovištěÚstav chemických procesů
    KontaktEva Jirsová, jirsova@icpf.cas.cz, Tel.: 220 390 227
    Rok sběru2011
Počet záznamů: 1