储氢材料新合成方法的研究——置换-扩散法合成Mg_(2)Cu  

A NEW METHOD FOR THE SYNTHESIS OF HYDROGEN STORAGE COMPOUNDS——REPLACEMENT-DIFFUSION METHOD FOR Mg2Cu

作　　者：申泮文[1] 张允什[1] 袁华堂[1] 陈声昌[1] Shen Panwen;Zhang Yunshi;Yuan Huatang;Chen Shengchang(Department of Chemistry,Nankai University,Tianjin)

机构地区：[1]南开大学化学系

出　　处：《高等学校化学学报》1982年第4期581-583,共3页Chemical Journal of Chinese Universities

摘　　要：目前,国外普遍采用高温熔炼法制备Mg_(2)Cu,这种方法的优点是工艺比较简单,缺点是产物表面性能较差,吸、放氢速度较慢,且使用前必须经过粉碎。 本文提出一种新的合成Mg_(2)Cu的方法,即置换-扩散法,其要点是:在适当的非水溶剂中,用金属镁置换溶液中化合态的铜,俟铜接镀在镁上,然后在适当的温度下扩散,形成金属互化物Mg_(2)Cu。所得Mg_(2)Cu在适当条件下可以较好地吸、放氢。A new method for the synthesis of Mg_(2)Cu is presented. The main feature of the method is using a suitable nonaqueous solution of cupric salt, such as CuCl_(2) in predried methylcyanide, to react with magnesium filings in an atmosphere of argon. The replaced copper is deposited on the surface of Mg. After heating the alloy at 500-580℃ under an atmosphere of argon for homogeneity, Mg_(2)Cu is obtained as a dark grey powder. The properties of this chemically synthetic intermetallic compound are essentially inden-tical with those reported in the literature.

关 键 词：扩散法 储氢材料 金属镁 金属互化物 置换溶液 高温熔炼 非水溶剂 新合成方法 

分 类 号：TG1[金属学及工艺—金属学]