Mixed matrix membranes containing MOFs for ethylene/ethane separation Part A: Membrane preparation and characterization

作者：Ploegmakers Jeroen; Japip Susilo; Nijmeijer Kitty^*

来源：Journal of Membrane Science, 2013, 428: 445-453.

DOI：10.1016/j.memsci.2012.11.014

• Metal-organic frameworks
• Gas separation
• Ethylene
• Mixed matrix membranes

Mixed matrix membranes (MMMs) containing three different metal organic frameworks (MOFs) (Cu3BTC2, FeBTC and MIL-53 (Al)) as filler in P84 were prepared and characterized in terms of ethylene/ethane separating ability. SEM, TGA and DSC suggest the absence of non-selective voids in the Cu3BTC2 and FeBTC MMMs. Gas permeation experiments confirmed this, and showed an increase in ethylene/ethane selectivity of 73% to a value of 7.1, while ethylene permeability remained constant at 17 x 10(-18) mol m/(m(2) s Pa) with addition of 20 wt% Cu3BTC2. Addition of 20 wt% FeBTC showed a reduced permeability, caused by the formation of a denser intermediate layer, and no significant change in selectivity. Addition of MIL-53 led to increased permeabilities and no change in selectivity, which is probably the result of the formation of non-selective voids or the absence of inherent selectivity of MIL-53.

• 出版日期2013-2-1