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CO2-Philic [EMIM][Tf2N] Modified Silica in Mixed Matrix Membrane for High Performance CO2/CH4 Separation
| Content Provider | Hindawi |
|---|---|
| Author | Shafie, Siti Nur Alwani Liew, Wen Xuan Md Nordin, Nik Abdul Hadi Bilad, Muhammad Roil Sazali, Norazlianie Putra, Zulfan Adi Wirzal, Mohd Dzul Hakim |
| Editor | Ghalei, Behnam |
| Copyright Year | 2019 |
| Abstract | Separation of carbon dioxide (CO2) from methane (CH4) using polymeric membranes is limited by trade-off between permeability and selectivity as depicted in Robeson curve. To overcome this challenge, this study develops membranes by incorporating silica particles (Si) modified with [EMIM][Tf2N] ionic liquid (IL) at different IL:Si ratio to achieve desirable membrane properties and gas separation performance. Results show that the IL:Si particle has been successfully prepared, indicated by the presence of fluorine and nitrogen elements, as observed via Fourier-Transform Infrared Spectroscopy (FTIR) and X-ray Photoelectron Spectrometer (XPS). Incorporation of the modified particles into membrane has given prominent effects on morphology and polymer chain flexibility. The mixed matrix membrane (MMM) cross-section morphology turns rougher in the presence of IL:Si during fracture due to higher loadings of silica particles and IL. Furthermore, the MMM becomes more flexible with IL presence due to IL-induced plasticization, independent of IL:Si ratio. The MMM with low IL content possesses CO2 permeance of 34.60 ± 0.26 GPU with CO2/CH4 selectivity of 85.10, which is far superior to a pure polycarbonate (PC) and PC-Sil membranes at 2 bar, which surpasses the Robeson Upper Bound. This higher CO2 selectivity is due to the presences of CO2-philic IL within the MMM system. |
| Page Count | 10 |
| File Format | |
| ISSN | 07306679 |
| DOI | 10.1155/2019/2924961 |
| Journal | Advances in Polymer Technology |
| Volume Number | 2019 |
| e-ISSN | 10982329 |
| Language | English |
| Publisher | Hindawi |
| Publisher Date | 2019-01-03 |
| Access Restriction | Open |
| Rights License | This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. |
| Content Type | Text |
| Resource Type | Article |
| Subject | Organic Chemistry Chemical Engineering Polymers and Plastics |
