Recently, Yang Weishen and Zhu Xuefeng, researchers of the Inorganic Membrane and Catalytic New Materials Group of the State Key Laboratory of Catalysis of the Chinese Academy of Sciences, proposed a new method for the separation of high-efficiency hydrogen in mixed-conductor membrane permeable membrane reactors. The relevant research results are published in Energy Environ. Sci. DOI: 10.1039/C6EE02967A. Hydrogen separation and purification technologies are critical to the successful application of hydrogen in various fields. In the membrane separation technology, the inorganic dense hydrogen permeability membrane is considered as one of the most promising methods for obtaining high purity hydrogen because of its selective permeability to 100% of hydrogen; however, there are scarce raw materials for the existing inorganic dense hydrogen permeability membrane. Problems such as high cost (Pd film), low permeability (proton conductor film), poor permeation stability in an H2S-containing atmosphere, etc. The research team proposed for the first time a new concept for hydrogen separation in ceramic-based mixed conductor permeable membrane reactors. The principle of hydrogen separation is to pass low purity hydrogen on one side of the membrane and the other side (side II). Into the steam, high temperature water and electrons combined and decomposed into hydrogen and oxygen ions, oxygen ions driven by the gradient of the oxidation of the two sides of the membrane through the membrane react with low-purity hydrogen to generate water. After the effluent gas from the membrane II side is condensed and dried, high-purity or ultra-pure hydrogen gas can be obtained. As a whole, low-purity hydrogen is introduced into one side of the oxygen-permeable membrane reactor, and high-purity hydrogen is obtained on the other side, and no net chemical reaction occurs, thereby realizing the process of separating hydrogen by the oxygen-permeable membrane. The experimental results show that the hydrogen separation rate is as high as 16.3 mL·cm-2·min-1, and the separation factor is more than 10,000; the hydrogen separation rate is comparable to that of the palladium-based metal film, which is 2-3 orders of magnitude higher than the proton conductor film. And can be stable in long-term operation with 200ppm H2S. Therefore, the oxygen-permeable membrane can efficiently provide high-purity hydrogen or ultra-high-purity hydrogen for industries such as fuel cells, semiconductor manufacturing, and photovoltaic cell production. The work was funded by the National Natural Science Foundation of China and the pilot project of the Chinese Academy of Sciences. Custom Deep Drawing Parts,Sheet Metal Stamping Anti Skidding,Metal Deep Drawing Cap,Deep Drawing Sheet Metal JIANGSU TONGDE INTERNATIONAL TRADE CO.LTD. , https://www.tongdetrades.com