Isobaric heat capacity and standard thermodynamic properties of cation-ordered layered perovskite-like oxides NaLnTiO4 and A2Ln2Ti3O10 (A = H, Na, K; Ln = La, Nd, Gd)

被引：1

作者：

Sankovich, Anna M. ^{[1
]}

Myshkovskaia, Tatiana D. ^{[1
]}

Markin, Alexey, V ^{[2
]}

Smirnova, Natalia N. ^{[2
]}

Zvereva, Irina A. ^{[1
]}

机构：

[1] St Petersburg State Univ, Univ Skaya Nab 7-9, St Petersburg 199034, Russia

[2] Natl Res Lobachevsky State Univ Nizhni Novgorod, 23-5 Gagarin Ave, Nizhnii Novgorod 603950, Russia

来源：

THERMOCHIMICA ACTA | 2020年 / 686卷

基金：

俄罗斯基础研究基金会;

关键词：

Layered perovskite-like oxides; Protonated forms; Adiabatic calorimetry; Heat capacity; Standard thermodynamic functions; RANGE; K2LA2TI3O10; MOBILITY;

D O I：

10.1016/j.tca.2020.178533

中图分类号：

O414.1 [热力学];

学科分类号：

摘要：

The heat capacities of protonated layered perovskite-like oxides H(1.64)K(0.36)Nd(2)Ti(3)O(10.)0.61 H2O and H(1.89)K(0.11)Nd(2)Ti(3)O(10.)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 NaLnTiO(4) and A(2)Ln(2)Ti(3)O(10) (A=H, Na, K; Ln=La, Nd, Gd) is present.

引用

页数：7

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