金属学报  1966, Vol. 9 Issue (2): 142-147

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六水合氯化钇的脫水和无水氯化钇的气相水解的研究

苏勉■;裘炳毅

北京大学;北京大学

THE DEHYDRATION OF HEXAHYDRATED YTTRIUM CHLORIDE AND THE VAPOR PHASE HYDROLYSIS OF ANHYDROUS

SU MIEN-TSNG; CH'IU PING-YI (Peking University)

苏勉■;裘炳毅. 六水合氯化钇的脫水和无水氯化钇的气相水解的研究[J]. 金属学报, 1966, 9(2): 142-147.
, . THE DEHYDRATION OF HEXAHYDRATED YTTRIUM CHLORIDE AND THE VAPOR PHASE HYDROLYSIS OF ANHYDROUS[J]. Acta Metall Sin, 1966, 9(2): 142-147.

摘要 参考文献 相关文章 Metrics 全文: PDF(507 KB)   摘要: 用薄膜示零压力计和热重分析法,研究了六水合氯化钇在减压和缓慢升温条件下的脱水机理。其热解过程可以表示为: YCl_3·6H_2O■YCl_3·H_2O+5H_2O, YCl_3·H_2O■YCl_3+H_2O, YCl_3+H_2O■YOCl+2HCl。 研究了无水氧化钇在340—480℃之间的气相水解平衡,求得水解反应的平衡常数和热力学函数:△H_(298)~O=12.52千卡/克分子,△H_T~O=11.98千卡/克分子,△F_(298)~O=6.04千卡/克分子,△S_(298)~O=21.74熵单位。 Abstract：Using a membrane null-manometer and a thermobalance the mechanism of the dehydration of hexahydrated yttrium chloride has been investigated. The following reactions have been verified:YCl_3·6H_2O■YCl_3·H_2O+5H_2O,YCl_3·H_2O■)YCl_3+H_2O,YCl_3+H_2O■YOCl+2HCl.The equilibrium of the last reaction concerning vapor phase hydrolysis have been studied. From the obtained experimental data the thermodynamic function of this reaction have been evaluated:log K_p=4.52-2617/T,ΔH_(650)~O=11.98 kcal/mole,ΔS_(650)~O=20.7 e.u. 收稿日期: 1966-02-18      服务 把本文推荐给朋友 加入引用管理器 E-mail Alert RSS 作者相关文章 苏勉■ 裘炳毅 44.8K 链接本文: https://www.ams.org.cn/CN/      或      https://www.ams.org.cn/CN/Y1966/V9/I2/142 [1] Spedding, F. H.. Daane, A. H.: The Rare Earths, (Wiley, 1961) , p. 89-99． [2] Wendlandt, W. W.: J. Inorg. Nud. Chem., 1957, 5, 118． Wendlandt, W. W.: J. Inorg. Nucl. Chem., 1959, 9, 136． [3] Wendlandt, W. W., Bear, J. L.: Anal. Chim. Acta, 1959, 21, 439． [4] Koch, C. W., Broido; A., Cunningham, B. B.: J. Am. Chem. Soc., 1952, 74, 2349． Koch, C. W., Cunningham, B. B.: J. Am. Chem. Soc., 1953, 75, 796． Koch, C. W., Cunningham, B. B.: J. Am. Chem. Soc., 1954, 76, 1471． [5] #12 [6] Kleinheksel, J. H., Kremers, H. C.: J. Am. Chem. Soc., 1928, 50, 959． [7] #12 [8] #12 [9] C1ementduval: Inorganic Thermogravimetric Analysis, (Elsevier, 1963) , p. 55． No related articles found! Viewed Full text Abstract Cited   Shared      Discussed