Gas permeation and sorption properties of poly(amide-12-b-ethyleneoxide)(Pebax1074)/SAPO-34 mixed matrix membrane for CO2/CH4 and CO2/N2 separation

Synthesis and characterization of high permeable PEBA membranes for CO 2 /CH 4 separation

“…Obtained results show that gas permeation increases with increasing of the operation temperature. Regarding the impact of the temperature on the gas permeation it has also been stated that the segmental motion of polymer chains increases with temperature, resulting in more diffusive jumps of penetrant molecules at high temperatures [16,36].…”

“…However, noncondensable gas (CH 4 ) often shows reverse solubility behavior; increase in temperature led to decrease in its solubility. It has been stated that the sorption of gases into a polymeric membrane consists of two thermodynamic processes: the condensation and then the integration of the molecule into the polymer matrix [16,31,36]. For non-condensable gases, the enthalpy change of the integration step dominates as their interaction with the polymer matrix is weak.…”

“…Thus, the solubility increases with temperature. On the other hand, the condensation step of more condensable gas, M A N U S C R I P T A C C E P T E D ACCEPTED MANUSCRIPT 12 e.g., CO 2 , governs its solubility leading to solubility decrease with increase in temperature [16,20,36]. Furthermore, diffusivity of gases through the polymer matrix is an activated phenomenon and hence it increases with temperature.…”

“…These types of polymeric membranes contain ether groups which strongly interacts with CO 2 due to dipole-quadrupole interactions. Thus, those materials exhibit high selectivity towards CO 2 over nonpolar gases (such as CH 4 ) which cause high permeability and permselectivity of CO 2 through the PEBAX membranes [15][16][17][18][19][20][21][22][23].…”

“…They found higher permeations for CO 2 and lower values for CH 4 , and hence, the greatly enhanced ideal selectivity for CO 2 /CH 4 separation. Rabiee et al (2015) [16] synthesized PEBAX-1074/SAPO-34 mixed matrix membranes. SAPO-34 addition showed an increase in permeability for CO 2 and N 2 gases.…”