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Occurence of Fe species in Fe-zeolites active in propane oxidation with N2O to propene and propanal

The result's identifiers

  • Result code in IS VaVaI

    <a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61388955%3A_____%2F05%3A00023868" target="_blank" >RIV/61388955:_____/05:00023868 - isvavai.cz</a>

  • Result on the web

  • DOI - Digital Object Identifier

Alternative languages

  • Result language

    angličtina

  • Original language name

    Occurence of Fe species in Fe-zeolites active in propane oxidation with N2O to propene and propanal

  • Original language description

    The performance of Fe-MFI zeolites in N2O- and O2-meditaed conversion of propane to propene and oxygenates has been investigated over a set of calcined and steamed Fe-MFI (Si/Al = 12 - 620) catalysts containing iron originally in the framework, in cationic sites and as oxide-like supported Fe species. All the catalysts exhibited very low activity in oxidation of propane by molecular oxygen, whereas in the propane reaction with nitrous oxide the propene yield was up to 20%, besides formation of other oxygenates. The results of UV-Vis and EPR spectroscopy and reaction kinetic tests enabled to suggest that very small part of the well-isolated Fe-species is extremely active in propane oxidation by nitrous oxide following the "propane - propanol - propene -propanal - COx" reaction pathway.

  • Czech name

    Výskyt Fe center v Fe-zeolitech aktivních při oxidaci propanu N2O na propylen a propanal

  • Czech description

    Byla zjišťována úloha Fe-MFI zeolitů při konversi propanu na propylen a a další oxidační produkty působením N2O popř. O2. Byla použita řada Fe-MFI katalyzátorů (Si/Al=20-620), obsahujících Fe v mřížce zeolitů, v kationtových pozicích a Fe-O specie.Všechny katalyzátory vykazovaly velmi nízkou aktivitu při oxidaci propanu molekulárním kyslíkem, zatímco při oxidaci propanu N2O se výtěžek propylenu zvyšuje o 20%, a vznikají další oxidační produkty. Výsledky UV-VIS a EPR spektroskopie a kinetické testy umožnily navrhnout reakční cestu pro oxidaci propanu N2O na velmi malé části izolovaných Fe-centrech, která jsou extrémně aktivní.

Classification

  • Type

    D - Article in proceedings

  • CEP classification

    CF - Physical chemistry and theoretical chemistry

  • OECD FORD branch

Result continuities

  • Project

    Result was created during the realization of more than one project. More information in the Projects tab.

  • Continuities

    Z - Vyzkumny zamer (s odkazem do CEZ)

Others

  • Publication year

    2005

  • Confidentiality

    S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Data specific for result type

  • Article name in the collection

    Studies in Surface Science and Catalysis

  • ISBN

    0-444-52083-X

  • ISSN

  • e-ISSN

  • Number of pages

    8

  • Pages from-to

    1977-1984

  • Publisher name

    Elsevier

  • Place of publication

    Amsterdam

  • Event location

    Prague

  • Event date

    Aug 23, 2005

  • Type of event by nationality

    WRD - Celosvětová akce

  • UT code for WoS article