Low-temperature selective oxidation of methane over distant binuclear cationic centers in zeolites

Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61388955%3A_____%2F19%3A00505953" target="_blank" >RIV/61388955:_____/19:00505953 - isvavai.cz</a>
Alternative codes found
RIV/00216275:25310/19:39915344
Result on the web
<a href="http://hdl.handle.net/11104/0297274" target="_blank" >http://hdl.handle.net/11104/0297274</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1038/s42004-019-0173-9" target="_blank" >10.1038/s42004-019-0173-9</a>

Result language
angličtina
Original language name
Low-temperature selective oxidation of methane over distant binuclear cationic centers in zeolites
Original language description
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.nn
Czech name
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Czech description
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Type
J<sub>imp</sub> - Article in a specialist periodical, which is included in the Web of Science database
CEP classification
—
OECD FORD branch
10403 - Physical chemistry

Project
<a href="/en/project/GA17-00742S" target="_blank" >GA17-00742S: Binuclear metal ion structures in zeolites</a><br>
Continuities
I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Publication year
2019
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

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