Mössbauer study of hydrothermal transformation of natural clinoptilolite into Y and P1 zeolites

Carlos De Las Pozas-Del Rio, Edilso Reguera-Ruiz, Carlos Diaz-Aguila, Rolando Roque-Malherbe

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6 Scopus citations

Abstract

The hydrothermal transformation of Na-clinoptilolite to NaY and NaP1 zeolites has been studied by Mössbauer spectroscopy of well-characterized solid intermediate phases (XRD, IR, 29Si MAS NMR, and thermodielectric analysis). The evolution of the quadrupole splitting of high spin Fe3+ during the amorphization and crystallization processes which characterize the hydrothermal transformations indicates that octahedral sites are structure sensitive, while the tetrahedral ones fundamentally depend on the Si Al ratio. Isomer shift values depend on Si Al ratio in both cases.

Original languageEnglish
Pages (from-to)215-219
Number of pages5
JournalJournal of Solid State Chemistry
Volume94
Issue number2
DOIs
StatePublished - Oct 1991
Externally publishedYes

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