Abstract The heat capacities of protonated layered perovskite-like oxides H1.64K0.36Nd2Ti3O10·0.61 H2O and H1.89K0.11Nd2Ti3O10·0.60 H2O were measured by precision adiabatic vacuum calorimetry over the temperature range of (6–300) K. The standard thermodynamic functions: molar heat capacity, enthalpy, entropy, and the Gibbs energy of the compounds were evaluated from the experimental data of the heat capacities over the temperature range of T = (6–300) K. The deviation of experimental points from fitting curves obtained on the basis of Debye’s theory. The overview on low-temperature heat capacity and standard thermodynamic properties of cation-ordered layered perovskite-like titanates NaLnTiO4 and A2Ln2Ti3O10 (A=H, Na, K; Ln=La, Nd, Gd) is present.

中文翻译：

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阳离子有序层状钙钛矿状氧化物 NaLnTiO4 和 A2Ln2Ti3O10（A = H、Na、K；Ln = La、Nd、Gd）的等压热容和标准热力学性质

摘要 质子化层状钙钛矿状氧化物 H1.64K0.36Nd2Ti3O10·0.61 H2O 和 H1.89K0.11Nd2Ti3O10·0.60 H2O 的热容是通过精密绝热真空量热法在（6-300）K 的温度范围内测量的。函数：化合物的摩尔热容、焓、熵和吉布斯能是根据热容在 T = (6-300) K 温度范围内的实验数据评估的。 实验点与拟合曲线的偏差根据德拜的理论。介绍了阳离子有序层状钙钛矿状钛酸盐 NaLnTiO4 和 A2Ln2Ti3O10（A=H、Na、K；Ln=La、Nd、Gd）的低温热容和标准热力学性质。