金属学报  1980, Vol. 16 Issue (3): 290-301

论文 本期目录 | 过刊浏览 |

Ni在氨性溶液中溶解动力学的研究

夏光祥;陈家镛

中国科学院化工冶金研究所;中国科学院化工冶金研究所

STUDIES ON THE KINETICS OF Ni DISSOLUTION IN AQUEOUS AMMONIACAL SOLUTION

Xia Guangxiang;Chen Jiayong (Chen Chia-yung) Institute of Chemical Metallurgy; Academia Sinica

夏光祥;陈家镛. Ni在氨性溶液中溶解动力学的研究[J]. 金属学报, 1980, 16(3): 290-301.
, . STUDIES ON THE KINETICS OF Ni DISSOLUTION IN AQUEOUS AMMONIACAL SOLUTION[J]. Acta Metall Sin, 1980, 16(3): 290-301.

摘要 参考文献 相关文章 Metrics 全文: PDF(919 KB)   摘要: 研究了Ni在氨-碳酸铵溶液中有氧存在下的溶解动力学. 结果表明Ni的溶解过程主要是电化学溶解过程,但尚有Ni的氧化伴生.反应速度为氨控制区或氧控制区,这与氨和氧的浓度之比有关. 在NH_3控制区Ni表面易钝化生成氧化膜,并停止溶解;在氧控制区,Ni的溶解速度为氧在液膜中的扩散所控制,可由氧传递速度方程来表达. Abstract：Studies have been carried out on the kinetics of Ni dissolution in aqueoussolution of NH_3 and (NH_4)_2CO_3 with O_2 present. It is shown that the NH_3 andNH_4~+ salt dissolution of Ni is an electrochemical reaction accompanied by surfaceoxidation of Ni by O_2. The reaction rate may be either in the NH_3 concentrationcontrol region or in the O_2 concentration control region depending on the ratio ofthe concentration of NH_3 and that of O_2. In the NH_3 controlling region, the surface of Ni will be passivated rathereasily with the formation of oxide film. The dissolution reaction will then beinterrupted. In the O_2 controlling region, the rate of reaction will be controlled bythe rate of O_2 transfer through the liquid film around the Ni surface. It can becorrelated with the equation of the rate of O_2 mass transfer. 收稿日期: 1980-03-18      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 夏光祥 陈家镛 44.8K 链接本文: https://www.ams.org.cn/CN/      或      https://www.ams.org.cn/CN/Y1980/V16/I3/290 [1] Lane, R. W. and McDonald, H. J., J. Amer. Chem. Soc., 6B (1946) , 1699． [2] Benjamin, Lu. C. Y. and Graydon, W. F., ibid., 77 (1955) , 6136． [3] Halpern, J., J. Electrochem. Soc., 100 (1953) , 421． [4] Shimakage, K. and Morioka, S., Inst. Mining Met., Trans., C80 (1971) , 228． [5] 夏光祥,陈家镛,全国第一届冶金过程物理化学学术报告会论文集,上海科学技术出版社,1965,p.103． [6] Schlies, R. E. and Rarnsworth, H. E., Advan. Catal. Relat. Subj., 9 (1957) , 424． [7] Uhlig, H. H., Proceedings of the 3rd International Congress on Metallic Corrosion, Vol.1, 1966, 25． [8] Mellor, J. W., A Comprehensive Treatise on Inorganic and Theoretical Chemistry, Longmans, Green and Co., New York, Vol. 15, 1923, p. 152． [9] Chilton, T. H. and Colburn, A. P., Ind Eng. Chem., 26 (1934) , 1183． [10] Colburn, A. P., Trans. Amer. Inst. Chem. Eng., 29 (1933) , 174． [11] Eisenberg, M., Tobias, C. W. and Wilke, C. R., J. Electrochem. Soc., 101 (1954) , 306．? No related articles found! Viewed Full text Abstract Cited   Shared      Discussed