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Updated: Feb 6, 2026

Bulk and Thin Film Synthesis of Compositionally Variant Entropy-stabilized Oxides
Published on: May 29, 2018
Influence of Synthesis Method on LTA Time-Dependent Stability
Claudia Belviso1,2, Antonio Lettino3,4, Francesco Cavalcante5,6
1Istituto di Metodologie per l'Analisi Ambientale-IMAA-CNR, 85050 Tito Scalo, Italy. claudia.belviso@imaa.cnr.it.
Abstract:
Time-stability of LTA zeolite formed by hydrothermal method with or without the action of ultrasonic irradiation was investigated by X-ray diffraction analysis (XRD) and scanning electron microscopy (SEM). The results show that 6 months after the synthesis by hydrothermal process with continuous sonication, LTA evolves into a more stable sodalite, whereas no differences are detected 12 months after LTA synthesis by conventional pre-fused hydrothermal process. These data confirm that using the two approaches, different mechanisms control both zeolite crystallization and time-stability of the newly-formed mineral at solid state. The results are particularly important in the light of the synthetic zeolite application.
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