Heat capacity and thermodynamic functions of TiO2(H)

被引：5

作者：

Feng, Tao ^{[1
]}

Li, Liping ^{[1
]}

Shi, Quan ^{[2
]}

Zhang, Yuelan ^{[1
]}

Li, Guangshe ^{[1
]}

机构：

[1] Jilin Univ, Coll Chem, State Key Lab Inorgan Synth & Preparat Chem, Changchun 130012, Peoples R China

[2] Chinese Acad Sci, Dalian Inst Chem Phys, Liaoning Prov Key Lab Thermochem Energy & Mat, Thermochem Lab,Dalian Natl Lab Clean Energy, Dalian 116023, Peoples R China

来源：

JOURNAL OF CHEMICAL THERMODYNAMICS | 2020年 / 145卷

关键词：

TiO2(H); Heat capacity; Thermodynamic properties; PPMS; SURFACE-WATER; ANATASE; RUTILE; PERFORMANCE; NANOWIRES; ANODE; SIZE; GEL;

D O I：

10.1016/j.jct.2019.106040

中图分类号：

O414.1 [热力学];

学科分类号：

摘要：

The heat capacity of TiO2(H) has been measured in the temperature range of 1.9 K to 302 K. The experimental heat capacity is fitted using theoretical models, orthogonal polynomials and combination of Debye and Einstein function for the low, middle and high temperature range, respectively. Based on these fitted results, the standard molar heat capacity, entropy, enthalpy and Gibbs energy are calculated as (55. 51 +/- 0.56) J.K-1.mol(-1), (50.55 +/- 0.51) J.K-1.mol(-1), (8.65 +/- 0.09) kJ.mol(-1), and -(6.42 +/- 0.06) kJ.mol(-1), respectively, at T = 298.15 K. Moreover, the heat capacity of TiO2(H) is similar to that of rutile and anatase, but significantly lower than those of brookite and TiO2(B) at temperature above 100 K. (C) 2019 Published by Elsevier Ltd.

引用

页数：7

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