ZIF-11/Matrimid (R) mixed matrix membranes for efficient CO2, CH4, and H-2 separations


Yumru A. B. , Boroglu M. , Boz I.

GREENHOUSE GASES-SCIENCE AND TECHNOLOGY, cilt.8, ss.529-541, 2018 (SCI İndekslerine Giren Dergi) identifier identifier

  • Cilt numarası: 8 Konu: 3
  • Basım Tarihi: 2018
  • Doi Numarası: 10.1002/ghg.1760
  • Dergi Adı: GREENHOUSE GASES-SCIENCE AND TECHNOLOGY
  • Sayfa Sayıları: ss.529-541

Özet

Zeolitic imidazolate framework ZIF-11 particles were prepared and mixed with Matrimid (R) 5218 polyimide, from 0 to 40 wt. % loadings. The ZIF-11 particles and the Matrimid (R) 5218 polyimide matrix were studied using differential scanning calorimetry (DSC), thermogravimetric analysis (TGA), X-Ray diffraction (XRD), infrared spectroscopy (FT-IR), and scanning electron microscopy (SEM) techniques. Surface and cross-sectional scanning electron microscopy images of the mixed matrix membranes (MMMs) were taken to examine the dispersion of particles in the polymer matrix. No visible agglomeration between ZIF-11 particles and the polymer matrix was spotted, even at 40 wt. % ZIF-11 loading. Mixed matrix membranes were described by the measured permeabilities of H-2, CO2 and CH4 gases. Ideal gas selectivities were determined. Permeability of all gases increased with increasing ZIF-11 percentages. The permeabilities for all gases decreased at 40 wt. % loading, and the CO2/CH4, and H-2/CH4 selectivities were increased. (c) 2018 Society of Chemical Industry and John Wiley & Sons, Ltd.