Studies on the Stability of Fe3+ Ions in the Ferrisilicate Analog of Zeolite Beta

A. Raj, S. Sivasanker, K. Lázár

Research output: Contribution to journalArticle

22 Citations (Scopus)

Abstract

The influence of pretreatments such as calcination in air, evacuation, and reduction in hydrogen at different temperatures on the stability of Fe3+ ions in the lattice of zeolite beta are reported. The concentration of Fe3+ ions in the lattice has been estimated by Mössbauer spectroscopy and ion-exchange studies. XRD and catalytic test reactions have been used to further characterize the samples. Mössbauer and ion-exchange studies indicate the formation of octahedral Fe3+ species (defect sites) with ion-exchange capacity on calcination in air. In situ Mössbauer spectroscopy has been used to identify the various Fe species formed during the different pretreatments.

Original languageEnglish
Pages (from-to)207-213
Number of pages7
JournalJournal of Catalysis
Volume147
Issue number1
DOIs
Publication statusPublished - May 1994

Fingerprint

Zeolites
Ion exchange
Ions
analogs
Calcination
Spectroscopy
ions
pretreatment
roasting
Air
Hydrogen
air
Defects
spectroscopy
defects
hydrogen
Temperature

ASJC Scopus subject areas

  • Process Chemistry and Technology
  • Catalysis

Cite this

Studies on the Stability of Fe3+ Ions in the Ferrisilicate Analog of Zeolite Beta. / Raj, A.; Sivasanker, S.; Lázár, K.

In: Journal of Catalysis, Vol. 147, No. 1, 05.1994, p. 207-213.

Research output: Contribution to journalArticle

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