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Separation of oil vapour by polyether block amide composite membrane modified with porous materials.
| Content Provider | Europe PMC |
|---|---|
| Author | Yan, Jiangyi Cai, Yuting Xu, Rong Wang, Beifu Nie, Lihong |
| Copyright Year | 2022 |
| Abstract | The ability of membranes to separate oil vapour is affected by their permeance and selectivity. This study modifies polyether block amide (PEBA) composite membranes with a microporous zeolite, Silicalite-1, or a mesoporous zeolite, MCM-41. The results show that when PEBA composite membranes are modified with these zeolites, the selective layer of the composite membrane is coated more thinly, resulting in a higher flux of organic gas. Silicalite-1 increases the hydrophobicity of the membrane, which facilitates the adsorption of organic vapour on the membrane surface, thus improving the membrane selectivity. In the separation of oil vapour, both modified membranes can effectively increase the gas permeabilities and selectivities. The main mechanism governing gas transport in the MCM-41-modified membrane is Knudsen diffusion, so the selectivity for small molecules is improved more significantly. By contrast, the dissolution–diffusion mechanism is dominant in the Silicalite-1-modified membranes, which considerably increases the selectivity for large molecules. |
| Volume Number | 9 |
| PubMed Central reference number | PMC9682297 |
| Issue Number | 11 |
| PubMed reference number | 36425523 |
| Journal | Royal Society Open Science [R Soc Open Sci] |
| e-ISSN | 20545703 |
| DOI | 10.1098/rsos.220008 |
| Language | English |
| Publisher | The Royal Society |
| Publisher Date | 2022-11-23 |
| Access Restriction | Open |
| Rights License | Published by the Royal Society under the terms of the Creative Commons Attribution License http://creativecommons.org/licenses/by/4.0/, which permits unrestricted use, provided the original author and source are credited. © 2022 The Authors. |
| Subject Keyword | microporous zeolite mesoporous zeolite polyether block amide composite membrane gas separation oil vapour |
| Content Type | Text |
| Resource Type | Article |
| Subject | Multidisciplinary |
