Effect of TiO2 loading on the morphology and CO2/CH4 separation performance of PEBAX-based membranes
Navid Azizi , Mojgan Isanejad , Toraj Mohammadi , Reza M. Behbahani
Front. Chem. Sci. Eng. ›› 2019, Vol. 13 ›› Issue (3) : 517 -530.
Effect of TiO2 loading on the morphology and CO2/CH4 separation performance of PEBAX-based membranes
Membranes have attracted much attention as economical methods for industrial chemical processes. The effects of the titanium dioxide nanoparticle load on the morphology and CO2/CH4 separation performance of poly (ether-block-amide) (PEBAX-1657) mixed matrix membranes (MMMs) were investigated from pressures of 3–12 bar and temperatures of 30°C–60°C. The PEBAX membranes were characterized by scanning electron microscopy, Fourier transform infrared spectroscopy, X-ray diffraction, thermal gravimetric analysis, atomic force microscopy and tensile strength analysis. The incorporation of TiO2 nanoparticles into the polymeric MMMs improved the CO2/CH4 gas separation performance (both the permeability and selectivity) of the membranes. The CO2 permeability and ideal CO2/CH4 selectivity values of the nanocomposite membrane loaded with 8 wt-% TiO2 were 172.32 Barrer and 24.79, respectively whereas those of the neat membrane were 129.87 Barrer and 21.39, respectively.
mixed matrix membrane / TiO2 nanoparticles / PEBAX-1657 / CO2/CH4 separation
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