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<p>The enthalpy increment of pure lithium of natural isotopic composition has been measured and heat capacity has been determined using high-temperature drop calorimetry method over a temperature range 421&#xa0;K–1126&#xa0;K covering solid and liquid states. Based on the measurement results, temperature dependences of the studied properties were derived and the heat of fusion was determined. Good agreement between our data and the results from the literature has been obtained. It is shown that the most probable behavior of the heat capacity of liquid lithium is relatively rapid decrease in the temperature range from fusion to ~ 700&#xa0;K and gradual flattening at higher temperatures.</p>

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Calorimetric Properties of Pure Lithium Investigated by High Temperature Drop Calorimetry

  • 期刊论文

  • 发表日期：

    2025年11月6日

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  • Andrei R. Khairulin,
  • Sergei V. Stankus

摘要

The enthalpy increment of pure lithium of natural isotopic composition has been measured and heat capacity has been determined using high-temperature drop calorimetry method over a temperature range 421 K–1126 K covering solid and liquid states. Based on the measurement results, temperature dependences of the studied properties were derived and the heat of fusion was determined. Good agreement between our data and the results from the literature has been obtained. It is shown that the most probable behavior of the heat capacity of liquid lithium is relatively rapid decrease in the temperature range from fusion to ~ 700 K and gradual flattening at higher temperatures.