The thermal behavior of Na-as synthesized and NH4 exchanged samples of ECR-1 has been studied by synchrotron radiation powder diffraction. The temperature resolved experìments were performed in capillary using a translating imaging piate System. The aim of this study is to follow in sifu thè dehydratìon mechanism of thè zeolite ECR-1, in its as-synthesized and NH4-exchanged forni in order to determine its thermal stability and whether thè structure undergoes phase transition during dehydration. The as-synthesized sample is stable up to 715 °C, whereas the NH4-exchanged one is stable up to 925 °C. Cell parameter refinements show a total volume decrease of 0.95% for thè as-synthesized phase and of 3.82 % for thè NH4 form.
In situ study of the dehydration of ECR-1: Na-as synthesized and NH4-exchanged in comparison / Arletti, R.; Gualtieri, Alessandro; Di Renzo, F.. - STAMPA. - 174b:(2008), pp. 901-904. (Intervento presentato al convegno 4th International FEZA Conference tenutosi a Paris (Francia) nel 02-06/09/2008).
In situ study of the dehydration of ECR-1: Na-as synthesized and NH4-exchanged in comparison
R. Arletti;GUALTIERI, Alessandro;
2008
Abstract
The thermal behavior of Na-as synthesized and NH4 exchanged samples of ECR-1 has been studied by synchrotron radiation powder diffraction. The temperature resolved experìments were performed in capillary using a translating imaging piate System. The aim of this study is to follow in sifu thè dehydratìon mechanism of thè zeolite ECR-1, in its as-synthesized and NH4-exchanged forni in order to determine its thermal stability and whether thè structure undergoes phase transition during dehydration. The as-synthesized sample is stable up to 715 °C, whereas the NH4-exchanged one is stable up to 925 °C. Cell parameter refinements show a total volume decrease of 0.95% for thè as-synthesized phase and of 3.82 % for thè NH4 form.
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