Oxygen transfer centers in Fe-FER and Fe-MFI zeolites: Redox behavior and Debye temperature derived from in situ Mössbauer spectra

K. Lázár, A. N. Kotasthane, P. Fejes

Research output: Contribution to journalArticle

38 Citations (Scopus)

Abstract

77 and 300 K in situ Mössbauer spectra recorded after redox treatments of Fe-FER and Fe-MFI ferrisilicates are compared. Similar behavior is found for the two catalysts; reversible redox processes can be detected. Oxidation and coordination states are identified after various treatments, and the value of the average Debye temperature is estimated (260 <ΘD <300 K). Analysis and comparison of data support the assignment of redox centers to Feframework-O-Feextra-framework pairs.

Original languageEnglish
Pages (from-to)171-177
Number of pages7
JournalCatalysis Letters
Volume57
Issue number4
Publication statusPublished - Mar 1999

Fingerprint

Zeolites
Debye temperature
zeolites
specific heat
Oxygen
oxygen
temperature
catalysts
Oxidation
oxidation
Catalysts
Oxidation-Reduction

Keywords

  • Fe-O-Fe centers
  • Ferrisilicates
  • Mössbauer spectroscopy
  • Redox behavior

ASJC Scopus subject areas

  • Catalysis
  • Physical and Theoretical Chemistry

Cite this

Oxygen transfer centers in Fe-FER and Fe-MFI zeolites : Redox behavior and Debye temperature derived from in situ Mössbauer spectra. / Lázár, K.; Kotasthane, A. N.; Fejes, P.

In: Catalysis Letters, Vol. 57, No. 4, 03.1999, p. 171-177.

Research output: Contribution to journalArticle

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