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The proximity of aluminium atoms influences the reaction pathway of ethanol transformation over zeolite ZSM-5
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SYSNO ASEP 0523425 Druh ASEP J - Článek v odborném periodiku Zařazení RIV J - Článek v odborném periodiku Poddruh J Článek ve WOS Název The proximity of aluminium atoms influences the reaction pathway of ethanol transformation over zeolite ZSM-5 Tvůrce(i) Golabek, K. (PL)
Tabor, Edyta (UFCH-W) RID, ORCID
Pashkova, Veronika (UFCH-W) RID, ORCID
Dědeček, Jiří (UFCH-W) RID, ORCID
Tarach, K. (PL)
Góra-Marek, K. (PL)Číslo článku 25 Zdroj.dok. Communications Chemistry. - : Nature Publishing Group - ISSN 2399-3669
Roč. 3, č. 1 (2020)Poč.str. 9 s. Jazyk dok. eng - angličtina Země vyd. GB - Velká Británie Klíč. slova high-resolution al-27 ; propene oligomerization ; rich zeolites ; beta-zeolite ; acid sites ; al atoms ; t-sites ; framework ; dehydration ; methanol Vědní obor RIV CF - Fyzikální chemie a teoretická chemie Obor OECD Physical chemistry Způsob publikování Open access Institucionální podpora UFCH-W - RVO:61388955 UT WOS 000515668400001 EID SCOPUS 85090060174 DOI 10.1038/s42004-020-0268-3 Anotace The organization of aluminium atoms in zeolites affects their catalytic properties. Here we demonstrate that the aluminium distribution is a key parameter controlling the reaction pathway of acid catalysed reactions over ZSM-5 zeolites. We study ethanol transformation over two ZSM-5 samples with similar Si/Al ratios of similar to 15, and with aluminium atoms located mainly at the channel intersections but differently distributed in the framework. One of the samples contains mostly isolated aluminium atoms while the other has a large fraction of two aluminium atoms located in one ring. The FT-IR time-resolved operando study, supported by catalytic results, reveals that the reaction pathway in ethanol transformation over ZSM-5 is controlled by the proximity of aluminium atoms in the framework. ZSM-5 containing mostly isolated Al atoms transforms ethanol in the associative pathway, and conversely ZSM-5 containing a dominating fraction of two aluminium atoms in one ring transforms ethanol in the dissociative pathway. Pracoviště Ústav fyzikální chemie J.Heyrovského Kontakt Michaela Knapová, michaela.knapova@jh-inst.cas.cz, Tel.: 266 053 196 Rok sběru 2021 Elektronická adresa 10.1038/s42004-020-0268-3
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