Resumen
Samples of tridimensional microporous zinc phosphates with fully connected framework with faujasite (FAU) and chiral zincophosphate (CZP) structures have been prepared and characterized by thermal analyses comprising TGA, TGA-MS and in situ thermal XRD. They have been also characterized by ICP and 13C MAS NMR. Analyses of the ZnPO-FAU demonstrate that the tetramethylammonium (TMA+) cations are incorporated preferentially in the β-cages and that this material is stable up to 673 K. The crystallinity of the sample only decreases when the TMA+ cations located in the β-cages are eliminated (above ∼723 K). In the case on ZnPO-CZP the thermal removal of the water more strongly held by the structure produces a marked decrease of crystallinity at ∼523 K
Idioma original | Inglés |
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Páginas (desde-hasta) | 155-162 |
Número de páginas | 8 |
Publicación | Thermochimica Acta |
Volumen | 376 |
N.º | 2 |
DOI | |
Estado | Publicada - 7 sep. 2001 |
Publicado de forma externa | Sí |