高等学校化学学报

高等学校化学学报 ›› 1988, Vol. 9 ›› Issue (11): 1173.

• 论文 • 上一篇    下一篇

Mg2Ni0.75Cu0.25-Mg1.76体系的合成及氢化过程的初步研究

张允什, 陈声昌, 袁华堂, 封显抱, 郑松   

  1. 南开大学化学系
  • 收稿日期:1987-04-07 出版日期:1988-11-24 发布日期:1988-11-24
  • 通讯作者: 张允什
  • 基金资助:

    中国科学院科学基金

Replacement-Diffusion Method for Mg2Ni0.75Cu0.25-Mg1.76 and Related Hydrogenation

Zhang Yunshi, Chen Shengchang, Yuan Huatang, Feng Xianbao, Zheng Song   

  1. Department of Chemistry, Nankai University, Tianjin
  • Received:1987-04-07 Online:1988-11-24 Published:1988-11-24

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摘要： Leilly[1]、Rudmen[2]和本研究组[3]分别对Mg2Ni-xMg,Mg2Cu-xMg体系进行了研究,巳发现Mg2Ni或Mg2Cu的存在对镁的氢化,释氢过程有催化作用,并描述了二元合金Mg2Ni,Mg2Cu对Mg的吸、放氢过程的催化氢化、脱氢模型。但有关三元合金对纯镁的吸、放氢催化性能研究,至今未见报道。我们合成了在基质镁粒表面包覆Mg2Ni0.75Cu0.25的新型材料,并研究此三元合金表面对所包覆的Mg核与H2之间反应的影响。

关键词: 储氢材料, 置换-扩散法, 镁镍铜三元储氢合金

Abstract: Replacement-diffusion method is reported to prepare Mg2Ni0.75Cu0.25Mg1.76 alloy. Surfaces of the alloy particles have been investigated- by AES. It has been found that Ni and Cu are greatly enriched on their surfaces. The under layer of the particles are Mg.The study of the hydrogen adsorption and desorption process for the alloy was carried out. The catalytic activity of Mg2Ni0.75Cu0.25 in the hydro-genation of Mg was observede.Amodel was suggested to describe the hydrogenation-dehydrogenation of Mg2Ni0.75Cu0.25-XMg system.

Key words: Hydrogen storing alloy, Replacement diffusion method, Ternary hydrogen storage alloy of magnesium, Nickel and copper

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