| Y2O3·Cr2O3复合氧化物热力学性质的研究 |
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| 引用本文： | 王常珍,叶树青,张鑫. Y2O3·Cr2O3复合氧化物热力学性质的研究[J]. 物理学报, 1985, 34(8): 1017-1026 |
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| 作者姓名： | 王常珍 叶树青 张鑫 |
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| 作者单位： | 东北工学院 |
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| 摘 要： | 在1182—1386K温度范围内,用固体电解质氧浓差电池:Mo|Cr,Y2O3,Y2O3·Cr2O3|ZrO2(+MgO)|Cr,Cr2O3|Mo测定了复合氧化物Y2O3·Cr2O3的热力学性质。对于反应Y2关键词：
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| 收稿时间： | 1984-06-26 |
A STUDY ON THERMODYNAMIC PROPERTIES OF Y2O3·Cr2O3 COMPOUND |
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| WANG CHANG-ZHEN,YE SHU-QING and ZHONG XIN. A STUDY ON THERMODYNAMIC PROPERTIES OF Y2O3·Cr2O3 COMPOUND[J]. Acta Physica Sinica, 1985, 34(8): 1017-1026 |
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| Authors: | WANG CHANG-ZHEN YE SHU-QING ZHONG XIN |
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| Abstract: | Thermodynamic properties of Y2O3·Cr2O3 were determined by means of electromotive force (emf) measurements using stabilized zirconia as a solid electrolyte at 1182 -1386 K. The constructions of oxygen concentration cell was Mo|Cr, Y2O3, Y2O3·Cr2O3|ZrO2(+MgO)|Cr, Cr2O3|Mo Using the emf values and its temperature dependences of the above cell, the standard free energy of formation of Y2O3·Cr2O3 according the reaction Y2O(3(s))+Cr2O(3(s)) = Y2O3·Cr2O(3(s)) was obtained as△G0((Y2O3)·cr2o3) = 39160- 34.97T( error in experiment is±350 cal/mol) or △G0((Y2O3)·cr2o3)= 163900-146.3T (error in experiment is±450J/mol) According the linear equation △G°= a + bT and equation △G = △H - T△S, the average enthalpy and entropy in the temperature ranges of investigation may beassumed as △H0((Y2O3)·cr2o3) = 39160 cal/mol or 193900J/mol, △S0((Y2O3)·cr2o3) = 34.97 cal/(mol ·K) or 146.3J/(mol·K). |
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