THERMODYNAMIC STABILITY OF LACRO3 BY A CAF2-BASED EMF METHOD

被引：18

作者：

AZAD, AM

SUDHA, R

SREEDHARAN, OM

机构：

[1] Metallurgy Division, Indira Gandhi Centre for Atomic Research, Kalpakkam

来源：

JOURNAL OF THE LESS-COMMON METALS | 1990年 / 166卷 / 01期

关键词：

D O I：

10.1016/0022-5088(90)90365-Q

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

The standard Gibbs' energy of formation of LaCrO3 from the constituent binary oxides La2O3 and Cr2O3, has been determined using a CaF2based e.m.f. technique under pure oxygen at a pressure of 1.01 × 105 Pa. For this purpose, LaCrO3/Cr2O3/LaF3/Pt and La2O3/LaF3/Pt have been employed as the electrodes. From the reversible e.m.f. of the galvanic cell, the standard Gibbs' energy of formation given by ΔGf,ox° (± 0.4) (kJ mol-1) = -44.45 + 0.002115T(K) has been derived over the range 855-1073 K. © 1990.

引用

页码：57 / 62

页数：6

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