Počet záznamů: 1
Low-temperature selective oxidation of methane over distant binuclear cationic centers in zeolites
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SYSNO ASEP 0505953 Druh ASEP J - Článek v odborném periodiku Zařazení RIV J - Článek v odborném periodiku Poddruh J Článek ve WOS Název Low-temperature selective oxidation of methane over distant binuclear cationic centers in zeolites Tvůrce(i) Tabor, Edyta (UFCH-W) RID, ORCID
Lemishka, Mariia (UFCH-W) RID, ORCID
Sobalík, Zdeněk (UFCH-W) RID
Mlekodaj, Kinga (UFCH-W) RID, ORCID
Andrikopoulos, Prokopis C. (UFCH-W) RID, ORCID
Dědeček, Jiří (UFCH-W) RID, ORCID
Sklenák, Štěpán (UFCH-W) RID, ORCID, SAIČíslo článku 71 Zdroj.dok. Communications Chemistry. - : Nature Publishing Group - ISSN 2399-3669
Roč. 2, JAN 2019 (2019)Poč.str. 9 s. Jazyk dok. eng - angličtina Země vyd. GB - Velká Británie Klíč. slova initio molecular dynamics ; total energy calculation ; N2O decomposition Vědní obor RIV CF - Fyzikální chemie a teoretická chemie Obor OECD Physical chemistry CEP GA17-00742S GA ČR - Grantová agentura ČR Způsob publikování Open access Institucionální podpora UFCH-W - RVO:61388955 UT WOS 000472619600001 EID SCOPUS 85071158227 DOI 10.1038/s42004-019-0173-9 Anotace Highly active oxygen capable to selectively oxidize methane to methanol at low temperature can be prepared in transition-metal cation exchanged zeolites. Here we show that the α-oxygen stabilized by the negative charges of two framework aluminum atoms can be prepared by the dissociation of nitrous oxide over distant binuclear cation structures (M(II)…M(II), M = cobalt, nickel, and iron) accommodated in two adjacent 6-rings forming cationic sites in the ferrierite zeolite. This α-oxygen species is analogous to that known only for iron exchanged zeolites. In contrast to divalent iron cations, only binuclear divalent cobalt cationic structures and not isolated divalent cobalt cations are active. Created methoxy moieties are easily protonated to yield methanol, formaldehyde, and formic acid which are desorbed to the gas phase without the aid of water vapor while previous studies showed that highly stable methoxy groups were formed on isolated iron cations in iron exchanged ZSM-5 zeolites.
Pracoviště Ústav fyzikální chemie J.Heyrovského Kontakt Michaela Knapová, michaela.knapova@jh-inst.cas.cz, Tel.: 266 053 196 Rok sběru 2020 Elektronická adresa http://hdl.handle.net/11104/0297274
Počet záznamů: 1