摘要
将已报道的具有三个及以上价数的Ce、Cr、Fe、In、Mn、Nb、Pb、Pr、Pu、Rh、Ti和V其12个元素的氧化物热力学数据与在该规则估算出的对应温度下氧化物热力学数据进行对比分析,得出在600、800、1000 K下,除In和Rh外,其他元素氧化物的ΔfHθm平均相对误差分别为1.78%、1.81%、2.01%,ΔfGθm平均相对误差为1.51%、1.49%、1.55%,Sθm平均相对误差为3.95%、3.26%、3.43%,这表明,该规则在高温条件下适用于大部分金属氧化物。
Cationic average valence rule can describe the functional relationship between cationic average valence and△fH^θm△fG^θm and S^θm of metal oxides, sulphides and halides having a plurality of valence states at 298.15 K, which can estimate the thermodynamic data of compounds of many multivalent elements. A comparison oxide thermodynamic data which can possess three and higher valenc is estimated in this rule corresponding to temperature. At 600 K, 800 K, 1000 K, the average relative error of elements oxide is △fG^θ except for In and Rh, respectively, is 1.78%, 1.81% and 2.01%, △fG^θ average relative error is 1.51%, 1.49%, 1.55% and S0m average relative error is 3.95%, 3.26% and 3.43%, which can indicate that the rule can be applied in the most metal oxide at high temperature conditions.
出处
《热加工工艺》
CSCD
北大核心
2014年第4期32-35,共4页
Hot Working Technology
基金
973计划资助项目(2012CB722806)
关键词
阳离子平均价数
金属氧化物
热力学数据
相对误差
适用温度
cationic average valence
metal oxide
thermo-dynamic data
relative error
suitable temperature
