Contribution of Pore-Connectivity to Permeation Performance of Silicalite-1 Membrane; Part II, Diffusivity of C<sub>6</sub> Hydrocarbon in Micropore
This study investigated the permeation behaviors of <i>n</i>-hexane and 2-methylpentane through two-types of silicalite-1 membranes that have different pore-connectivity. The permeation mechanisms of these hydrocarbons were able to be explained by the adsorption–diffusion model. In addit...
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MDPI AG
2021-05-01
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| Series: | Membranes |
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| Online Access: | https://www.mdpi.com/2077-0375/11/6/399 |
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| author | Motomu Sakai Yukichi Sasaki Takuya Kaneko Masahiko Matsukata |
| author_facet | Motomu Sakai Yukichi Sasaki Takuya Kaneko Masahiko Matsukata |
| author_sort | Motomu Sakai |
| collection | DOAJ |
| description | This study investigated the permeation behaviors of <i>n</i>-hexane and 2-methylpentane through two-types of silicalite-1 membranes that have different pore-connectivity. The permeation mechanisms of these hydrocarbons were able to be explained by the adsorption–diffusion model. In addition, the fluxes through silicalite-1 membranes could be expressed by the modified Fick’s first law. The hydrocarbon fluxes through S-1<sub>S</sub> with better pore-connectivity were ca. 3–20 times larger than those through S-1<sub>M</sub> with poor pore-connectivity. For these membranes with different pore-connectivity, the activation energy of diffusion of <i>n</i>-hexane was 17.5 kJ mol<sup>−1</sup> for the membrane with better pore-connectivity and 18.0 kJ mol<sup>−1</sup> for the membrane with poorer pore-connectivity, whereas for 2-methylpentane it was 17.9 and 33.0 kJ mol<sup>−1</sup>, respectively. We concluded that the pore-connectivity in silicalite-1 membrane significantly influences the molecular diffusivities. |
| first_indexed | 2024-03-10T10:58:20Z |
| format | Article |
| id | doaj.art-332867a519b840918c220f75a1dc92ee |
| institution | Directory Open Access Journal |
| issn | 2077-0375 |
| language | English |
| last_indexed | 2024-03-10T10:58:20Z |
| publishDate | 2021-05-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Membranes |
| spelling | doaj.art-332867a519b840918c220f75a1dc92ee2023-11-21T21:40:38ZengMDPI AGMembranes2077-03752021-05-0111639910.3390/membranes11060399Contribution of Pore-Connectivity to Permeation Performance of Silicalite-1 Membrane; Part II, Diffusivity of C<sub>6</sub> Hydrocarbon in MicroporeMotomu Sakai0Yukichi Sasaki1Takuya Kaneko2Masahiko Matsukata3Research Organization for Nano & Life Innovation, Waseda University, 513 Wasedatsurumaki-cho, Shinjuku-ku, Tokyo 162-0041, JapanNanostructures Research Laboratory, Japan Fine Ceramics Center, 2-4-1 Atsuta-ku, Nagoya-shi, Aichi 456-8587, JapanDepartment of Applied Chemistry, Waseda University, 513 Wasedatsurumaki-cho, Shinjuku-ku, Tokyo 162-0041, JapanResearch Organization for Nano & Life Innovation, Waseda University, 513 Wasedatsurumaki-cho, Shinjuku-ku, Tokyo 162-0041, JapanThis study investigated the permeation behaviors of <i>n</i>-hexane and 2-methylpentane through two-types of silicalite-1 membranes that have different pore-connectivity. The permeation mechanisms of these hydrocarbons were able to be explained by the adsorption–diffusion model. In addition, the fluxes through silicalite-1 membranes could be expressed by the modified Fick’s first law. The hydrocarbon fluxes through S-1<sub>S</sub> with better pore-connectivity were ca. 3–20 times larger than those through S-1<sub>M</sub> with poor pore-connectivity. For these membranes with different pore-connectivity, the activation energy of diffusion of <i>n</i>-hexane was 17.5 kJ mol<sup>−1</sup> for the membrane with better pore-connectivity and 18.0 kJ mol<sup>−1</sup> for the membrane with poorer pore-connectivity, whereas for 2-methylpentane it was 17.9 and 33.0 kJ mol<sup>−1</sup>, respectively. We concluded that the pore-connectivity in silicalite-1 membrane significantly influences the molecular diffusivities.https://www.mdpi.com/2077-0375/11/6/399silicalite-1membraneseparationdiffusionadsorptionmicropore |
| spellingShingle | Motomu Sakai Yukichi Sasaki Takuya Kaneko Masahiko Matsukata Contribution of Pore-Connectivity to Permeation Performance of Silicalite-1 Membrane; Part II, Diffusivity of C<sub>6</sub> Hydrocarbon in Micropore Membranes silicalite-1 membrane separation diffusion adsorption micropore |
| title | Contribution of Pore-Connectivity to Permeation Performance of Silicalite-1 Membrane; Part II, Diffusivity of C<sub>6</sub> Hydrocarbon in Micropore |
| title_full | Contribution of Pore-Connectivity to Permeation Performance of Silicalite-1 Membrane; Part II, Diffusivity of C<sub>6</sub> Hydrocarbon in Micropore |
| title_fullStr | Contribution of Pore-Connectivity to Permeation Performance of Silicalite-1 Membrane; Part II, Diffusivity of C<sub>6</sub> Hydrocarbon in Micropore |
| title_full_unstemmed | Contribution of Pore-Connectivity to Permeation Performance of Silicalite-1 Membrane; Part II, Diffusivity of C<sub>6</sub> Hydrocarbon in Micropore |
| title_short | Contribution of Pore-Connectivity to Permeation Performance of Silicalite-1 Membrane; Part II, Diffusivity of C<sub>6</sub> Hydrocarbon in Micropore |
| title_sort | contribution of pore connectivity to permeation performance of silicalite 1 membrane part ii diffusivity of c sub 6 sub hydrocarbon in micropore |
| topic | silicalite-1 membrane separation diffusion adsorption micropore |
| url | https://www.mdpi.com/2077-0375/11/6/399 |
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