Hollow silicalite-1 sphere-polymer mixed matrix membranes for gas separation

Zornoza, B. (Universidad de Zaragoza) ; Esekhile, O. ; Koros, W. J. ; Téllez, C. (Universidad de Zaragoza) ; Coronas, J. (Universidad de Zaragoza)

Resumen: Mixed matrix membranes (MMMs) were prepared combining two different polymers (polysulfone Udel® and polyimide Matrimid®) and hollow silicalite-1 spheres (HZSs) with about 4 μm in diameter. These HZSs were obtained by hydrothermal synthesis from solid mesoporous silica spheres (seeded with silicalite-1 nanocrystals). With filler loadings varying between 0 and 16 wt.%, the MMMs were applied to the separation of H2/CH4, CO2/N2, and O2/N2 mixtures. For all the gas pairs tested, it was found that with a loading of 8 wt.% the MMMs performed better than those prepared with pure polymer, other different loadings and conventional silicalite-1 crystals of similar size to that of the HZS diameter. The highest selectivities obtained here for H2/CH4, CO2/N2, and O2/N2 mixtures were 180 (H2 permeability = 38.4 Barrer), 41.7 (CO2 permeability = 7.2 Barrer), and 8.5 (O2 permeability = 2.8 Barrer), respectively.

Idioma: Inglés

DOI: 10.1016/j.seppur.2010.11.033

Año: 2011

Publicado en: Separation and Purification Technology 77, 1 (2011), 137-145
ISSN: 1383-5866

Factor impacto JCR: 2.921 (2011)

Categ. JCR: ENGINEERING, CHEMICAL rank: 16 / 132 = 0.121 (2011) - Q1 - T1

Financiación: info:eu-repo/grantAgreement/ES/MICINN/MAT2007-61028

Tipo y forma: Article (PostPrint)

Área (Departamento): Área Ingeniería Química (Dpto. Ing.Quím.Tecnol.Med.Amb.)