Hydrogen Absorption Thermodynamic Properties of Rare Earth Based Hydrogen Storage Alloy in Benzene
来源期刊：JOURNAL OF RARE EARTHS2002年第1期
论文作者：陈立新 蔡官明 徐国华 王启东 安越 陈长聘
Key words：rare earths; hydrogen storage alloy; organic hydride; absorption hydrogen; thermodynamic properties;
Abstract: The hydriding/dehydriding thermodynamic properties of the slurry system formed by suspending La-rich mischmetal nickel hydrogen storage alloy (MlNi5) in Benzene (C6H6) were investigated. The pressure-composition isotherms for both the alloy powder and the slurry suspended with MlNi5 were measured at several temperatures(10, 20, 30, 40 ℃). The standard enthalpy of formation ΔH° and standard entropy of formation ΔS° for the alloy powder with and without benzene were determined respectively. The experimental results show that the values of ΔH° and ΔS° for the hydriding reaction of hydrogen storage alloy (MlNi5) of the slurry system and the gas-solid system are all very close.
陈立新1，蔡官明1，徐国华1，王启东1，安越1，陈长聘1
(1.Institute of Metallic Materials, Zhejiang University, Hangzhou 310027, China)
Abstract:The hydriding/dehydriding thermodynamic properties of the slurry system formed by suspending La-rich mischmetal nickel hydrogen storage alloy (MlNi5) in Benzene (C6H6) were investigated. The pressure-composition isotherms for both the alloy powder and the slurry suspended with MlNi5 were measured at several temperatures(10, 20, 30, 40 ℃). The standard enthalpy of formation ΔH° and standard entropy of formation ΔS° for the alloy powder with and without benzene were determined respectively. The experimental results show that the values of ΔH° and ΔS° for the hydriding reaction of hydrogen storage alloy (MlNi5) of the slurry system and the gas-solid system are all very close.
Key words:rare earths; hydrogen storage alloy; organic hydride; absorption hydrogen; thermodynamic properties;
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