期刊
JOURNAL OF PHYSICAL CHEMISTRY C
卷 114, 期 24, 页码 10986-10991出版社
AMER CHEMICAL SOC
DOI: 10.1021/jp102271v
关键词
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资金
- Key Program of Chinese Academy of Sciences [KJCX1.YW07]
- National High-tech R&D Program of China [2007AA05Z157]
Composite membranes consisting of a proton-conducting ceramic and an electronic conductor are promising in reducing the cost in the separation of hydrogen from CO2. However, the lack of a stable ceramic in CO2 with sufficient proton conductivity remains a great hurdle. In this study, we investigated the hydrogen permeation performance and chemical stability of composite membranes based on doped ceria and Ni. Doped ceria used to be considered as a very poor proton conductor for a long time. However, our results show that ceria heavily doped with rare earth element possesses significant proton conductivity. Compared with membranes based on perovskite-type oxides, hydrogen separation membranes based on fluorite-type ceria show much higher stability in H2O and CO2.
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