ZHANG Guangjun, BAO Xiaonan, ZHENG Guozhu, LIU Kui, YANG Xiaochun, CHEN Ting, WANG Shaorong
(School of Chemical Engineering and Technology, China University of Mining and Technology, Xuzhou 221116, Jiangsu, China)

Abstract: Hydrogen will become one of the most important green fuels in the future, due to its wide sources, high energy density and pollution-free emissions. The development of “hydrogen economy” requires the establishment of a complete technology and industrial chain, including production, purification, storage, utilization and recovery. However, the challenge of hydrogen purification from hydrogen-containing mixtures, especially the purification of dilute hydrogen mixtures containing carbon monoxide, still hinders the application in devices, such as fuel cells. Compared with traditional hydrogen separation technology, proton conductor ceramic hydrogen separation membrane (P-CHSM) has attracted more and more attention, because of the advantages of low energy consumption, high stability, high mechanical strength, simple operation and cheap membrane materials. Therefore, P-CHSM has demonstrated great potential in the hydrogen purification as the “next generation” hydrogen separation technology. Transport mechanism of proton conductor, working principal and research progress in perovskite based P-CHSM are reviewed. The configuration of hydrogen pump, single-phase and double-phase P-CHSM are also discussed and summarized. Finally, the challenges and future development in P-CSHM are concluded and proposed.
Key words: hydrogen; hydrogen separation membrane; perovskite; proton conductor ceramics