本文利用透明槽技术、电化学循环V-A法及量子化学EHMO三种方法,研究了La在KCl-NaCl(1:1mol)及LaCl_3-KCl-NaCl熔体中的溶解行为。初步认为:溶解在KCl-NaCl熔体中的La是以中性金属状态存在。在LaCl_3-KCl-NaCl熔体中,溶解的La与La~(3+)作用生成低价La~(2+)离子,La~(2+)又与周围的La~(3+)作用形成原子簇离子La_m~(n+)赋存于熔体之中。
The dissolution behaviours of La in KCl-NaCl and LaCl_3-KCl-NaClmelts have been studied by means of the see-through cell, cyclic voltammetry andEHMO of quantum chemistry. The La dissolved in KCl-NaCl melt is found to be ina metallic state, and dissolved in LaCl_3-KCl-NaCl melt ionized into La~(2+) which mayreact furthermore with surrounding La~(3+) to form atom cluster La_m~(n+).
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