Tailoring of the structure of Fe-cationic species in Fe-ZSM-5 by distribution of Al atoms in the framework for N2O decomposition and NH3-SCR-NOx
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61388955%3A_____%2F14%3A00425817" target="_blank" >RIV/61388955:_____/14:00425817 - isvavai.cz</a>
Result on the web
<a href="http://dx.doi.org/10.1016/j.jcat.2014.01.019" target="_blank" >http://dx.doi.org/10.1016/j.jcat.2014.01.019</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1016/j.jcat.2014.01.019" target="_blank" >10.1016/j.jcat.2014.01.019</a>
Alternative languages
Result language
angličtina
Original language name
Tailoring of the structure of Fe-cationic species in Fe-ZSM-5 by distribution of Al atoms in the framework for N2O decomposition and NH3-SCR-NOx
Original language description
The heterogeneity and redox behavior of Fe-cationic species in Fe-ZSM-5 catalysts for N2O decomposition and NH3-SCR-NOx were analyzed by Mössbauer and UV?Vis spectroscopy, TPR-H2, and reaction kinetic measurements. Iron was introduced into ZSM-5 zeolitesof similar Si/Al but with different populations of close (Al?Si?Si?Al sequences in one ring ? Al pairs) and far distant (single Al in different rings) Al atoms in the zeolite framework. It has been found that Al pairs in 6MRs of the framework greatly stabilize divalence of bare Fe(II) ions and [Fe(II)?O?Fe(II)]2+ complexes even in oxidizing atmosphere. These species were completely oxidized only with N2O and recognized as the most active sites in N2O decomposition. On the contrary, the prevailing concentration of single Al atoms resulted at comparable conditions in high population of Fe(III)-oxo species. Fe(III)-oxo species of low nuclearity with partially compensated positive charge by the zeolite framework facilitate the formation of
Czech name
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Czech description
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Classification
Type
J<sub>x</sub> - Unclassified - Peer-reviewed scientific article (Jimp, Jsc and Jost)
CEP classification
CF - Physical chemistry and theoretical chemistry
OECD FORD branch
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Result continuities
Project
Result was created during the realization of more than one project. More information in the Projects tab.
Continuities
I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace
Others
Publication year
2014
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 Catalysis
ISSN
0021-9517
e-ISSN
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Volume of the periodical
312
Issue of the periodical within the volume
APR 2014
Country of publishing house
US - UNITED STATES
Number of pages
16
Pages from-to
123-138
UT code for WoS article
000335111300013
EID of the result in the Scopus database
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