info:eu-repo/semantics/article
Insight into the crystal synthesis, activation and application of ZIF-20
Registro en:
Seoane, Beatriz; Zamaro, Juan Manuel; Téllez, Carlos; Coronas, Joaquin; Insight into the crystal synthesis, activation and application of ZIF-20; RCS Publishing; RSC Advances; 1; 7-2011; 917-922
1010-3910
CONICET Digital
CONICET
Autor
Seoane, Beatriz
Zamaro, Juan Manuel
Téllez, Carlos
Coronas, Joaquin
Resumen
The crystallization of the zeolitic imidazolate framework ZIF-20 has been tuned from the point of view of crystal size and aggregation by using rotation and seeding with a previously prepared material. In addition, the activation of ZIF-20 by solvent extraction has been found to be in correlation with the 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). Fil: Seoane, Beatriz. Universidad de Zaragoza. Instituto de Nanociencia de Aragón; España Fil: Zamaro, Juan Manuel. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Santa Fe. Instituto de Investigaciones en Catálisis y Petroquímica ; Argentina Fil: Téllez, Carlos. Universidad de Zaragoza. Instituto de Nanociencia de Aragón; España Fil: Coronas, Joaquin. Universidad de Zaragoza. Instituto de Nanociencia de Aragón; España