INCAPE 05401
INSTITUTO DE INVESTIGACIONES EN CATALISIS Y PETROQUIMICA "ING. JOSE MIGUEL PARERA"
Unidad Ejecutora - UE
artículos
Título:
Insight into the crystal synthesis, activation and application of ZIF-20
Autor/es:
B. SEOANE; J. M. ZAMARO; C. TÉLLEZ; J. CORONAS
Revista:
RSC Advances
Editorial:
RCS Publishing
Referencias:
Lugar: Cambridge; Año: 2011 vol. 1 p. 917 - 922
ISSN:
1010-3910
Resumen:
The crystallization of zeolitic imidazolate framework ZIF-20 has been tuned from the point of view of crystal size and aggregation by using rotation and seeding with previously prepared material. In addition, the activation of ZIF-20 by solvent extraction has been found to be in correlation with relative permittivity of the solvent. High permittivity solvents (acetone and methanol) extract more guest dimethylformamide but amorphize the structure, while those with low permittivity (n-pentane and chloroform) preserve the crystallinity of ZIF-20. The dispersion in commercial polysulfone of the small synthesized ZIF-20 particles obtained with low aggregation results in an improved O2-selective mixed matrix membrane (O2 permeability and O2/N2 selectivity being 1.0 (±0.0) Barrer and 6.7 (±0.5), respectively).
