Mössbauer study of hydrothermal transformation of natural clinoptilolite into Y and P1zeolites

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

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Abstract

The hydrothermal transformation of Na-clinoptilolite to NaY and NaP 1 zeolites has been studied by Mössbauer spectroscopy of well-characterized solid intermediate phases (XRD, IR, 29 Si MAS NMR, and thermodielectric analysis). The evolution of the quadrupole splitting of high spin Fe 3+ 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. © 1991.
Original languageAmerican English
Pages (from-to)215-219
Number of pages5
JournalJournal of Solid State Chemistry
DOIs
StatePublished - 1 Jan 1991
Externally publishedYes

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Zeolites
Amorphization
Crystallization
Isomers
Nuclear magnetic resonance
Spectroscopy
zeolites
isomers
quadrupoles
crystallization
nuclear magnetic resonance
shift
spectroscopy
clinoptilolite

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De Las Pozas-Del Rio, Carlos ; Reguera-Ruiz, Edilso ; Diaz-Aguila, Carlos ; Roque-Malherbe, Rolando. / Mössbauer study of hydrothermal transformation of natural clinoptilolite into Y and P1zeolites. In: Journal of Solid State Chemistry. 1991 ; pp. 215-219.
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abstract = "The hydrothermal transformation of Na-clinoptilolite to NaY and NaP 1 zeolites has been studied by M{\"o}ssbauer spectroscopy of well-characterized solid intermediate phases (XRD, IR, 29 Si MAS NMR, and thermodielectric analysis). The evolution of the quadrupole splitting of high spin Fe 3+ 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. {\circledC} 1991.",
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Mössbauer study of hydrothermal transformation of natural clinoptilolite into Y and P1zeolites. / De Las Pozas-Del Rio, Carlos; Reguera-Ruiz, Edilso; Diaz-Aguila, Carlos; Roque-Malherbe, Rolando.

In: Journal of Solid State Chemistry, 01.01.1991, p. 215-219.

Research output: Contribution to journalArticleResearchpeer-review

TY - JOUR

T1 - Mössbauer study of hydrothermal transformation of natural clinoptilolite into Y and P1zeolites

AU - De Las Pozas-Del Rio, Carlos

AU - Reguera-Ruiz, Edilso

AU - Diaz-Aguila, Carlos

AU - Roque-Malherbe, Rolando

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AB - The hydrothermal transformation of Na-clinoptilolite to NaY and NaP 1 zeolites has been studied by Mössbauer spectroscopy of well-characterized solid intermediate phases (XRD, IR, 29 Si MAS NMR, and thermodielectric analysis). The evolution of the quadrupole splitting of high spin Fe 3+ 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. © 1991.

U2 - 10.1016/0022-4596(91)90185-K

DO - 10.1016/0022-4596(91)90185-K

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