Heat Capacity of Pb10 - xLax(GeO4)2 + x(VO4)4 - x (x=0, 1, 2, 3) Apatites in the Range 320-1000 K

被引：4

作者：

Denisova, L. T. ^{[1
]}

Kargin, Yu. F. ^{[2
]}

Golubeva, E. O. ^{[1
]}

Belousova, N. V. ^{[1
]}

Denisov, V. M. ^{[1
]}

机构：

[1] Siberian Fed Univ, Inst Nonferrous Met & Mat Sci, Svobodnyi Pr 7, Krasnoyarsk 660041, Russia

[2] Russian Acad Sci, Baikov Inst Met & Mat Sci, Leninskii Pr 49, Moscow 119991, Russia

来源：

INORGANIC MATERIALS | 2019年 / 55卷 / 02期

关键词：

apatites; differential scanning calorimetry; high-temperature heat capacity; thermodynamic properties; PB5(GEO4)(VO4)2; REFINEMENT; STRONTIUM;

D O I：

10.1134/S002016851902002X

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Pb10 - La-x(x)(GeO4)(2) (+) (x)(VO4)(4) (-) (x) (x = 0, 1, 3) compounds with the apatite structure have been prepared by solid-state reactions via multistep firing of appropriate oxide mixtures in air in the temperature range 773-1073 K. The heat capacity of the synthesized polycrystalline samples has been determined by differential scanning calorimetry. The experimental C-p(T) data have been used to evaluate the thermodynamic properties of the lead lanthanum germanatovanadates: enthalpy increment, entropy change, and reduced Gibbs energy.

引用

页码：162 / 166

页数：5

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