Hydrogen and deuterium interaction of NaAlHxD4-x (0 <= x >= 4) and its kinetics isotope effect

作者：Xiong Renjin^*; Sang Ge; Yan Xiayan; Zhang Guanghui; Li Peilong; Qin Cheng; Lu Junbo; Song Jiangfeng; Chen Chang'an; Tang Tao

来源：International Journal of Hydrogen Energy, 2017, 42(9): 6160-6165.

DOI：10.1016/j.ijhydene.2016.11.086

• Hydrogen storage
• Complex hydrides
• NaAlH4
• Hydrogen isotope effect
• Hydrogen isotope separation

Samples NaAlHxD4-x (0 <= x >= 4) have been synthesized through a direct hydrogen isotope absorption/desorption cycles using Ti-doped NaAlH4 as source material, and then the interaction between hydrogen/deuterium and obtained NaAlHxD4-x and its hydrogen isotope effect were investigated. The results show that hydrogen isotope desorption/absorption kinetics of NaAlHxD4-x. is enhanced with increasing the hydrogen concentration. In addition, NaAlHxD4-x exhibits kinetics isotope effect during both hydrogen isotope desorption and absorption processes, and the isotope effect keeps stable during cycling. Our study may enable NaAlH4 to be used as hydrogen isotope separation material in future based on its kinetics isotope effect.

• 出版日期2017-3-2
• 单位中国工程物理研究院