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淬冷法研究NbCl_5-NaCl和NbCl_5-KCl二元系的热力学性质 被引量：3

Thermodynamic properties of NbCl_5-NaCl and NbCl_5-KCl binary systems by quenching experiments
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摘要 用高温平衡-淬冷方法，研究了NaCl-NbCl5和KCl—NbCl5二元系的热力学性质。结果表明：在580～680K和0．06～0．12MPa范围内，NaNbCl6（g）和KNbCl6（g）分别是惟一产物，且NaNbCl6（g）比KNbCl6（g）稳定。反应NbCls（g）＋NaCl（s）=NaNbCl6（g）的热力学函数是△Hm^θ=（-28．3±1．5）kJ／mol和△Sm^θ=（-73．0±2．0）J／（mol·K）；反应NbCl5（g）＋KCl（s）=KNbCl6（g）的热力学函数是△Hm^θ（-37．6±1．5）kJ／mol和△Sm^θ（-93．7±2．0）J／（mol·K）。 Thermodynamic properties of NaCl-NbCl5 and KCl-NbCl5 binary systems were studied by high temperature equilibrated quenching experiments. The results show that NaNbCl6 （g） and KNbCl6 （g） complexes are respectively their sole predominant vapour complexes roughly in the ranges of 580 - 680 K and 0.06 -0.12 MPa, and that NaNbCl6 （g） is more stable than KNbCl6 （g）. The thermodynamic properties are △Hm^θ=（-28.3±1.5）kJ/mol and △Sm^θ=（-73.0±2.0） J/（mol· K） for the reaction NbCls （g） ＋ NaCI （s） = NaNbCl6 （g）, and △Hm^θ（-37.6±1.5）kJ/mol and △Sm^θ（-93.7±2.0） J/（mol·K） for the reaction NbCl5 （g） ＋KCI （s）= KNbCL6 （g）.
作者 李军丽 杨冬梅 曾繁武 王之昌
机构地区 东北大学理学院
出处 《中国有色金属学报》 EI CAS CSCD 北大核心 2006年第6期1120-1124,共5页 The Chinese Journal of Nonferrous Metals
基金 国家自然科学基金资助项目(50274027)
关键词 NaNbCl6 KNbCl6 NbCl5 NACL KCL 气态配合物 淬冷法 NaNbCl6 KNbCI6 NbCl5 NaCI KCI vapour complex quenching method
分类号 O642 [理学—物理化学]
  • 相关文献

参考文献16

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二级参考文献25

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共引文献5

同被引文献25

  • 1于锦,王林山,杨冬梅,蒋军辉,王之昌.稀土气态配合物GdAl_3Br_(12)的热力学研究[J].中国稀土学报,2004,22(3):326-330. 被引量：4
  • 2于锦,杨冬梅,王之昌.稀土气态配合物PrAl3Br12的热力学研究[J].东北大学学报（自然科学版）,2005,26(1):54-54. 被引量：2
  • 3于锦,杨冬梅,王之昌.稀土气态配合物PrAl_3Br_(12)的热力学研究[J].东北大学学报（自然科学版）,2005,26(2):201-204. 被引量：1
  • 4邓丽琴,许茜,李兵,翟玉春,黄振奇.电脱氧法由Nb_2O_5直接制备金属铌[J].中国有色金属学报,2005,15(4):541-545. 被引量：45
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  • 6Sadoway D R, Flengas S N. The synthesis and properties of the hexachloroniobates and hexachlorotantalates of Na, K, Rb,and Cs[J]. Can.J Chem, 1978,56(15):2013-2018.
  • 7Sadoway D R,Flengas S N. Thermal properties of the alkali metal hexachloroniobate and hexachlorotantalate compounds by vapour measurements[J]. Can J Chem, 1978,56(15):2538-2545.
  • 8Wang Z C,Wang L S, Gao R J ,et al. Thermodynamic study of the rare earth vapour complexes: ScAl2Cl9 and YAl2Cl9 [J]. J Chem Soc Faraday Trans,1996,92(11):1887-1890.
  • 9Wang L S,Gao R J ,Su Y,et al. Formation thermodynamies of the rare earth vapour complexes:DyAl2Cl9[J].J Chem Thermody,1996,28(10):1093-1102.
  • 10Wang Z C,Wang L S. Thermodynamic properties of the rare earth element vapor complexes LnAl3Cl12 from Ln = La to Ln = Lu[J]. Inorg Chem, 1997,36(8):1536-1540.

引证文献3

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中国有色金属学报
2006年 第6期

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