Oxygen Splitting and Methane Oxidation over Fe-Mordenite: Insight by the Operando 2D COS UV-Vis-NIR-IR Approach
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61388955%3A_____%2F24%3A00583973" target="_blank" >RIV/61388955:_____/24:00583973 - isvavai.cz</a>
Result on the web
<a href="https://hdl.handle.net/11104/0351965" target="_blank" >https://hdl.handle.net/11104/0351965</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1021/acs.jpcc.3c08225" target="_blank" >10.1021/acs.jpcc.3c08225</a>
Alternative languages
Result language
angličtina
Original language name
Oxygen Splitting and Methane Oxidation over Fe-Mordenite: Insight by the Operando 2D COS UV-Vis-NIR-IR Approach
Original language description
Activation of molecular oxygen and subsequent oxidation of methane over Fe sites in mordenite zeolites with different content of framework Al atoms were studied in the continuous regime at low temperatures. For this purpose, reactivity tests of methane oxidation by molecular oxygen over iron mordenite zeolites were combined with an operando 2D COS UV-vis-NIR-IR study to analyze the reaction pathway. The transmission spectra in the visible-NIR-IR range of investigated iron mordenites revealed the structural changes of Fe(II) after O2 treatment and the formation of the spectral features typical for alpha-O stabilized on iron. Mass spectrometry analysis of gaseous products of the simultaneous interaction of methane and oxygen with iron mordenite revealed the formation of methanol, water, carbon monoxide, and carbon dioxide. Moreover, operando 2D COS UV-vis-NIR-IR also evidenced the presence of formaldehyde, formate, carbon dioxide, and carbon monoxide as products of subsequent methanol oxidation. The differences in the reaction pathway of methane oxidation over Fe-mordenite compared to Fe-ferrierite and Fe-*BEA catalysts reflect unique properties of mordenite topology providing isolated alpha-oxygens in individual mordenite pockets, although formed by splitting of molecular oxygen by two cooperating iron ions and the nature of adsorption sites in the mordenite matrix.
Czech name
—
Czech description
—
Classification
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
Result continuities
Project
<a href="/en/project/GA22-06737S" target="_blank" >GA22-06737S: Activation of molecular nitrogen</a><br>
Continuities
I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace
Others
Publication year
2024
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Data specific for result type
Name of the periodical
Journal of Physical Chemistry C
ISSN
1932-7447
e-ISSN
1932-7455
Volume of the periodical
128
Issue of the periodical within the volume
9
Country of publishing house
US - UNITED STATES
Number of pages
11
Pages from-to
3759-3769
UT code for WoS article
001173716500001
EID of the result in the Scopus database
2-s2.0-85186069862