Zorite is a microporous titanosilicate, with ideal chemical formula Na6Ti5Si12O36.11H2O, reported for the first time in the Lovozero massif. A synthetic zeolite-like titanosilicate, called ETS-4 was postulated as its synthetic counterpart. This chapter reports the comparison of the structural modifications, including the transient states, underwent by zorite and Na-ETS-4 when dynamically (continuously) heated. This goal was achieved by means of temperature-resolved in situ powder diffraction using synchrotron radiation and Rietveld refinement. In fact, this kind of time-resolved experiments allowed to study the structural modifications upon heating in the so-called ‘far-from-equilibrium’ conditions and provided a complementary view to results obtained in the ‘near-equilibrium’ approximation typically carried out ex situ.

Comparison of Structural Changes upon Heating of Zorite and Na-ETS-4 by In Situ Synchrotron Powder Diffraction

SACERDOTI, Michele;CRUCIANI, Giuseppe
2011

Abstract

Zorite is a microporous titanosilicate, with ideal chemical formula Na6Ti5Si12O36.11H2O, reported for the first time in the Lovozero massif. A synthetic zeolite-like titanosilicate, called ETS-4 was postulated as its synthetic counterpart. This chapter reports the comparison of the structural modifications, including the transient states, underwent by zorite and Na-ETS-4 when dynamically (continuously) heated. This goal was achieved by means of temperature-resolved in situ powder diffraction using synchrotron radiation and Rietveld refinement. In fact, this kind of time-resolved experiments allowed to study the structural modifications upon heating in the so-called ‘far-from-equilibrium’ conditions and provided a complementary view to results obtained in the ‘near-equilibrium’ approximation typically carried out ex situ.
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11392/1559004
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