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RevistaEntrar
Año2011
Volumen40 (32)
Páginas8125-8131
Internacional

Synthesis of Zn-containing microporous aluminophosphate with the STA-1 structure

Autores:Ana Belén Pinar Prieto, Luis Gómez-Hortiguela Sáinz, Lynne B. McCusker , J. Perez-Pariente
Grupos de investigación:Tamices Moleculares
Zn atoms have been incorporated into the STA-1 microporous framework (SAO framework type) for the first time. Pure Zn-containing STA-1 aluminophosphate has been obtained in the presence of either (S)-(-)-N-benzylpyrrolidine-2-methanol (BPM) or benzylpyrrolidine (BP) as structure-directing agent.
Characterisation results have demonstrated that the organic molecules remain intact within the microporous framework after the hydrothermal treatment. The X-ray diffraction pattern has been indexed in the tetragonal space group I4¯ m2 (a = 13.7828(1)A˚ and c = 21.9444(4)A˚ ). Chemical analysis and 31P MAS NMR spectroscopy confirm the incorporation of ca. 4.5 Zn atoms per unit cell by isomorphous substitution of Al. This large-pore aluminophosphate has one of the lowest framework densities among the known zeolite structures, and is therefore of potential interest for applications in adsorption or catalytic processes involving bulky molecules.
Palabras clave:STA-1, microporous aluminophosphate, Ver sublíneas y proyectos
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