TY - JOUR
T1 - Mössbauer study of hydrothermal transformation of natural clinoptilolite into Y and P1 zeolites
AU - De Las Pozas-Del Rio, Carlos
AU - Reguera-Ruiz, Edilso
AU - Diaz-Aguila, Carlos
AU - Roque-Malherbe, Rolando
PY - 1991/10
Y1 - 1991/10
N2 - 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.
AB - 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.
UR - http://www.scopus.com/inward/record.url?scp=44949274546&partnerID=8YFLogxK
U2 - 10.1016/0022-4596(91)90185-K
DO - 10.1016/0022-4596(91)90185-K
M3 - Artículo
SN - 0022-4596
VL - 94
SP - 215
EP - 219
JO - Journal of Solid State Chemistry
JF - Journal of Solid State Chemistry
IS - 2
ER -