Separation of oil vapour by polyether block amide composite membrane modified with porous materials
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 modi...
| Main Authors: | , , , , |
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| Format: | Article |
| Language: | English |
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The Royal Society
2022-11-01
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| Series: | Royal Society Open Science |
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| Online Access: | https://royalsocietypublishing.org/doi/10.1098/rsos.220008 |
| _version_ | 1797845337916833792 |
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| author | Jiangyi Yan Yuting Cai Rong Xu Beifu Wang Lihong Nie |
| author_facet | Jiangyi Yan Yuting Cai Rong Xu Beifu Wang Lihong Nie |
| author_sort | Jiangyi Yan |
| collection | DOAJ |
| description | 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. |
| first_indexed | 2024-04-09T17:37:24Z |
| format | Article |
| id | doaj.art-7d5d034fab454a488b1247df837de133 |
| institution | Directory Open Access Journal |
| issn | 2054-5703 |
| language | English |
| last_indexed | 2024-04-09T17:37:24Z |
| publishDate | 2022-11-01 |
| publisher | The Royal Society |
| record_format | Article |
| series | Royal Society Open Science |
| spelling | doaj.art-7d5d034fab454a488b1247df837de1332023-04-17T10:54:42ZengThe Royal SocietyRoyal Society Open Science2054-57032022-11-0191110.1098/rsos.220008Separation of oil vapour by polyether block amide composite membrane modified with porous materialsJiangyi Yan0Yuting Cai1Rong Xu2Beifu Wang3Lihong Nie4College of Petrochemical Engineering and Environment, Zhejiang Ocean University, No.1 Haida South Road, Lincheng Street, Dinghai District, Zhoushan, Zhejiang 316000, People's Republic of ChinaCollege of Petrochemical Engineering and Environment, Zhejiang Ocean University, No.1 Haida South Road, Lincheng Street, Dinghai District, Zhoushan, Zhejiang 316000, People's Republic of ChinaCollege of Naval Architecture and Maritime, Zhejiang Ocean University, No.1 Haida South Road, Lincheng Street, Dinghai District, Zhoushan, Zhejiang 316000, People's Republic of ChinaCollege of Petrochemical Engineering and Environment, Zhejiang Ocean University, No.1 Haida South Road, Lincheng Street, Dinghai District, Zhoushan, Zhejiang 316000, People's Republic of ChinaCollege of Petrochemical Engineering and Environment, Zhejiang Ocean University, No.1 Haida South Road, Lincheng Street, Dinghai District, Zhoushan, Zhejiang 316000, People's Republic of ChinaThe 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.https://royalsocietypublishing.org/doi/10.1098/rsos.220008microporous zeolitemesoporous zeolitepolyether block amidecomposite membranegas separationoil vapour |
| spellingShingle | Jiangyi Yan Yuting Cai Rong Xu Beifu Wang Lihong Nie Separation of oil vapour by polyether block amide composite membrane modified with porous materials Royal Society Open Science microporous zeolite mesoporous zeolite polyether block amide composite membrane gas separation oil vapour |
| title | Separation of oil vapour by polyether block amide composite membrane modified with porous materials |
| title_full | Separation of oil vapour by polyether block amide composite membrane modified with porous materials |
| title_fullStr | Separation of oil vapour by polyether block amide composite membrane modified with porous materials |
| title_full_unstemmed | Separation of oil vapour by polyether block amide composite membrane modified with porous materials |
| title_short | Separation of oil vapour by polyether block amide composite membrane modified with porous materials |
| title_sort | separation of oil vapour by polyether block amide composite membrane modified with porous materials |
| topic | microporous zeolite mesoporous zeolite polyether block amide composite membrane gas separation oil vapour |
| url | https://royalsocietypublishing.org/doi/10.1098/rsos.220008 |
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