CO2-Resistant Hydrogen Permeation Membranes Based on Doped Ceria and Nickel

被引：65

作者：

Fang, Shumin ^{[1
]}

Bi, Lei ^{[1
]}

Yan, Litao ^{[1
]}

Sun, Wenping ^{[1
]}

Chen, Chusheng ^{[1
]}

Liu, Wei ^{[1
]}

机构：

[1] Univ Sci & Technol China, CAS Key Lab Energy Convers Mat, Hefei 230026, Anhui, Peoples R China

来源：

JOURNAL OF PHYSICAL CHEMISTRY C | 2010年 / 114卷 / 24期

关键词：

CHEMICAL-STABILITY; ELECTRICAL-CONDUCTIVITY; PROTON CONDUCTIVITY; PERMEABILITY; ELECTROLYTE; CONDUCTORS; ZR; LA; SM;

D O I：

10.1021/jp102271v

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

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.

引用

页码：10986 / 10991

页数：6

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