Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
9689967 | Separation and Purification Technology | 2005 | 7 Pages |
Abstract
Nanoporous ferrimagnetic and ferromagnetic membranes are considered for separation of paramagnetic and diamagnetic species. The prepared ferrimagnetic membranes are based on maghemite (γ-Fe2O3) and cobalt ferrite (Fe2CoO4). Ferromagnetic films of (Fe0.67Co0.33)89-B2.75N8.25 (FeCo-B-N) are prepared on porous substrates by reactive rf magnetron sputtering. O2-N2 adsorption, air separation and ion selectivity experiments are carried out in order to evaluate magnetic interactions in static and dynamic conditions, respectively. A slight effect of an external magnetic field on the selectivity of the membranes is shown. Optimization of the membrane porosity and magnetic properties remains possible (decrease of the pore size to increase the magnetic interactions). It seems, however, difficult to get easily high-performance membranes required for technological applications.
Related Topics
Physical Sciences and Engineering
Chemical Engineering
Filtration and Separation
Authors
Jihye Gwak, André Ayral, Vincent Rouessac, Ki Hyeon Kim, Jean-Claude Grenier, Louis Cot, Jin-Ho Choy,