Improving oxygen permeability in SrfeCo0.5Ox asymmetric membranes by modifying support-layer porous structure
Improving oxygen permeability in SrfeCo0.5Ox asymmetric membranes by modifying support-layer porous structure
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DOI：
10.1016/j.matlet.2004.12.042
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发表时间：
2005-05
影响因子：
3
通讯作者：
Masayuki Ikeguchi;K. Ishii;Yasushi Sekine;E. Kikuchi;M. Matsukata
中科院分区：
文献类型：
--
作者：
Masayuki Ikeguchi;K. Ishii;Yasushi Sekine;E. Kikuchi;M. Matsukata
制备了用于高温氧分离的圆盘型srfeco0.5氧不对称膜，采用了先前报道的一种固态技术，其中引入乙基纤维素，然后通过煅烧除去多孔支撑层，以及一种改进的技术，其中在乙基纤维素中添加碳纤维。在973 ~ 1173 K温度下，测定了制备的srfeco0.5氧不对称膜的氧透性。在乙基纤维素中加入碳纤维改善了多孔支撑层中的气体扩散率，增加了氧通过改性不对称膜的通量。
Disk-type SrFeCo0.5Oxasymmetric membranes were prepared for high-temperature oxygen separation using both a previously reported solid state technique in which ethyl cellulose is introduced and then removed by calcination to produce a porous support layer and a modified technique in which carbon fiber is added to the ethyl cellulose. The oxygen permeabilities of the resulting SrFeCo0.5Oxasymmetric membranes were measured at 973–1173 K. The addition of carbon fiber to ethyl cellulose resulted in the improvement of gas diffusivity in the porous support layer, which increased the flux of oxygen through the modified asymmetric membrane.