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Amine-Containing Membranes with Functionalized Multi-Walled Carbon Nanotubes for $CO_{2}/H_{2}$ Separation
| Content Provider | MDPI |
|---|---|
| Author | Yang, Yutong Han, Yang Pang, Ruizhi Ho, W. S. Winston |
| Copyright Year | 2020 |
| Description | Amine-containing mixed-matrix membranes incorporated with amino-functionalized multi-walled carbon nanotubes (AF-MWNTs) were synthesized for CO2/H2 separation based on the facilitated transport mechanism. AF-MWNTs were chosen primarily as the mechanical reinforcing filler to enhance the membrane stability. At 107 °C and 0.2-MPa feed pressure, the membrane incorporated with 10 wt.% AF-MWNTs showed a CO2 permeability of 3196 Barrers and a CO2/H2 selectivity of 205. At the higher feed pressure of 1.5 MPa, owing to the carrier saturation phenomenon, the same membrane exhibited reduced transport performance with a CO2 permeability of 776 Barrers and a CO2/H2 selectivity of 31. These separation performances at both the low and high feed pressures were well above the theoretical upper bound. Furthermore, the incorporation of 10 wt.% AF-MWNTs led to a significant improvement on membrane stability. The transport performance and selective layer thickness of this membrane maintained for 100 h, which suggested that the incorporation of AF-MWNTs improved the resistance to membrane compaction upon a high feed pressure. Therefore, this work is considered as one of the crucial steps to enable the application of facilitated transport membranes to high-pressure gas processing such as syngas purification. |
| Starting Page | 333 |
| e-ISSN | 20770375 |
| DOI | 10.3390/membranes10110333 |
| Journal | Membranes |
| Issue Number | 11 |
| Volume Number | 10 |
| Language | English |
| Publisher | MDPI |
| Publisher Date | 2020-11-10 |
| Access Restriction | Open |
| Subject Keyword | Membranes Applied Chemistry Polymer Science Carbon Dioxide Separation Mixed-matrix Membrane Amino-functionalized Multi-walled Carbon Nanotube Membrane Compaction |
| Content Type | Text |
| Resource Type | Article |
