https://scholars.lib.ntu.edu.tw/handle/123456789/409391
標題: | Current efficiency of an ion-exchange membrane: Effect of piecewise continuous fixed charge distribution | 作者: | Hsu J.-P. Ting K.-C. Shieh Y.-H. |
公開日期: | 2000 | 卷: | 104 | 期: | 15 | 起(迄)頁: | 3492-3495 | 來源出版物: | Journal of Physical Chemistry B | 摘要: | The current efficiency £b for the transport of ions through an ion-exchange'membrane is analyzed theoretically. In particular, the effect of discretizing the fixed charges contained in the membrane into charged intervals on £b is investigated. We show that if the applied current density I is low, a membrane with a continuous linear fixed charge distribution has a higher £b than a membrane with evenly distributed charged intervals, and the larger the number of charged intervals the lower the £b. If I is high, a membrane with randomly distributed charged intervals may have a higher £b than that of a membrane with a continuous linear fixed charge distribution. It can be inferred that, as far as raising £b is concerned, distributing fixed charges discretely and/or randomly in a membrane has no practical advantage. ? 2000 American Chemical Society. |
URI: | https://scholars.lib.ntu.edu.tw/handle/123456789/409391 | ISSN: | 15206106 |
顯示於: | 化學工程學系 |
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