The evaluation of symmetric and asymmetric Matrimid/MIL-53 mixed matrix membranes for CO2/CH4 separation

Message:
Abstract:
In this study, the effect of MIL-53 particles on CO2/CH4 separation of Matrimid was investigated. MIL-53 used as an additive due to its especial pore structure and considerable selectivity respect to CO2. For the purpose of mixed matrix membrane structure with different weight percent of MIL-53 on CO2/CH4 separation, membranes fabricated with symmetric and asymmetric structure. Morphology of membranes studied with cross sectional SEM images and a performance of membranes in gas separation evaluated through permeability measurement. SEM images showed that a proper compatibility between particles and polymer along with proper dispersion of particles within polymer matrix were achieved. Results from gas permeation test demonstrated that increasing in weight percent of MIL-53 in membranes led to the permeability and selectivity enhancement. Moreover, permeability results showed that the CO2 permeability was increased from 0.056 GPU in neat symmetric membrane up to 0.113 GPU in mixed matrix membrane that containing 15 wt. % of MIL-53 particles. CO2/CH4 selectivity also increased 85% compared to neat membrane and reached to 51.8. In addition, permeability results illustrated that the gases permeability in asymmetric membranes was 100 times higher than those in symmetric membranes.
Language:
Persian
Published:
Journal of separation science and engineering, Volume:7 Issue: 1, 2015
Pages:
83 to 92
https://magiran.com/p1423457  
مقالات دیگری از این نویسنده (گان)