Valency and coordination of iron in FeAlPO molecular sieves: An in situ Mössbauer study

K. Lázár, J. Cejka

Research output: Contribution to journalArticle

4 Citations (Scopus)

Abstract

Changes in the valency and coordination states of iron in FeAlPO-5 and FeAlPO-11 during reduction-oxidation treatments were followed by extracting isomer shift, quadrupole splitting and relative absorption area data from in situ Mössbauer spectra. Facile Fe3+ → Fe2+ reduction was detected, and the Fe2+ formed was stabilized in a low symmetry coordination state. The bonding strength, characterized by the Debye temperature (ΘD), was considerably smaller for Fe2+ than for Fe3+D(Fe2+) = 170 K, ΘD(Fe3+) ≈ 500 K).

Original languageEnglish
Pages (from-to)213-220
Number of pages8
JournalStudies in Surface Science and Catalysis
Volume125
DOIs
Publication statusPublished - 1999

ASJC Scopus subject areas

  • Catalysis
  • Condensed Matter Physics
  • Physical and Theoretical Chemistry
  • Surfaces, Coatings and Films
  • Materials Chemistry

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