STRUCTURAL CHARACTERIZATION AND GAS PERMEATION PROPERTIES OF POLYETHERIMIDE (PEI)/ZEOLITIC IMIDAZOLATE (ZIF-11) MIXED MATRIX MEMBRANES

• Main Author: Mehtap Şafak Boroğlu
• Format: Article
• Language: English
• Published: Turkish Chemical Society 2016-06-01
• Series: Journal of the Turkish Chemical Society, Section A: Chemistry
• Online Access: http://dergipark.gov.tr/jotcsa/issue/24619/260525?publisher=turchemsoc

In this study, the preparation of polyetherimide (PEI-Ultem1000)/ZIF-11 mixed matrix membranes was studied in various ZIF-11 nanoparticles loadings (0, 10, 15, 20, and 30 wt.%). The newly synthesized ZIF-11 nanoparticles with an average particle size of ~280 nm were integrated in PEI membranes as novel mixed matrix membranes (MMMs). The effect of ZIF-11 loading was scrutinised for H2, CO2, and CH4 gas separation performance at 35 °C and 4 bar. The incorporation of ZIF-11 nanoparticles improved the gas permeation properties of the MMMs with an increase in ZIF-11 loading. As the ZIF-11 loading increased up to 20 wt.%, the permeability of H2 and CO2 increased to four times higher than that of the pure polymer. Moderate increase of CH4 permeability was also recorded. At higher loadings above 20 wt.%, the permeability decreased for all gases and the CO2/CH4, and H2/CH4 selectivities increased consistent with the ZIF-11 loading.