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首页> 外文会议>Proceedings vol.2005-07; International Symposium on Solid Oxide Fuel Cells IX(SOFC-IX) vol.2: Materials; 20050515-20; Quebec City(CA) >NEW MIEC MEMBRANES FOR HYDROGEN SEPARATION
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NEW MIEC MEMBRANES FOR HYDROGEN SEPARATION

机译：用于分离氢气的新型MIEC膜

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摘要

A new approach to separate hydrogen using dual phase composite MIEC membranes has been proposed and is being currently investigated. In this approach methane or reformate comprising CO and H_2 mixtures is fed to one side of the membrane, while water vapor is fed to the other side. Oxygen from the steam side of the membrane transports through coupled transport of oxygen ions and electrons across the membrane to the methane/reformate side resulting in a hydrogen rich product on the permeate side. Although single phase membranes such as strontium or calcium doped lanthanum cobalt iron oxides (LSCF and LCF) have very high mixed conductivity, they were found to be not stable for the process under investigation. New dual phase membranes consisting of doped ceria and doped strontium titanate have been developed with good stability and high ambipolar conductivity suitable for the permeation process.
机译：已经提出了一种使用双相复合MIEC膜分离氢的新方法，目前正在研究中。在这种方法中，将包含CO和H_2混合物的甲烷或重整产品进料到膜的一侧，而将水蒸气进料到另一侧。来自膜的蒸汽侧的氧气通过氧离子和电子的耦合传输穿过膜到达甲烷/重整物侧，从而在渗透侧产生富氢产物。尽管单相膜（如锶或钙掺杂的镧钴铁氧化物（LSCF和LCF））具有很高的混合电导率，但发现它们对所研究的过程不稳定。已开发出由掺杂的二氧化铈和掺杂的钛酸锶组成的新型双相膜，具有良好的稳定性和高双极性电导率，适合于渗透过程。

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