摘要
The temperature dependence of standard free energy of formation of LaNi_5,CeNi_5 has been de- termined by galvanic—cell technique using 0.95LaF_3·0.05CaF_2 polycrystalline solid electrolyte.The cell used can be expressed as: Mo|La,LaF_3|0.95LaF_3·0.05CaF2|LaNi_5,Ni,LaF_3|Mo(903～1173K) Mo|La|0.95LaF_3·0.05CaF_2|LaNi_5,Ni|Mo(903～1173K) Mo|Ce,CeF_3|0.95LaF_3·0.05CaF_2|CeNi_5,Ni,CeF_3|Mo(873～1023K) The experimental results are as follows: △G_(f,LaNi_5)~0=-152590+13.143T±150 J/mol(903～1173K) △G_(f,CeNi_5)~0=-157600+25.514T±150 J/mol(873～1023K)
The temperature dependence of standard free energy of formation of LaNi_5,CeNi_5 has been de- termined by galvanic—cell technique using 0.95LaF_3·0.05CaF_2 polycrystalline solid electrolyte.The cell used can be expressed as: Mo|La,LaF_3|0.95LaF_3·0.05CaF2|LaNi_5,Ni,LaF_3|Mo(903～1173K) Mo|La|0.95LaF_3·0.05CaF_2|LaNi_5,Ni|Mo(903～1173K) Mo|Ce,CeF_3|0.95LaF_3·0.05CaF_2|CeNi_5,Ni,CeF_3|Mo(873～1023K) The experimental results are as follows: △G_(f,LaNi_5)~0=-152590+13.143T±150 J/mol(903～1173K) △G_(f,CeNi_5)~0=-157600+25.514T±150 J/mol(873～1023K)
基金
The project supported by the National Natural Science Foundation of China
