Products formed during cobalt cementation on zinc in zinc sulfate electrolytes
作者： Oluf Bøckman , Terje Østvold
DOI: 10.1016/S0304-386X(99)00059-6
关键词: Cobalt 、 Inorganic chemistry 、 Chemistry 、 Cobalt extraction techniques 、 Electrolysis 、 Cementation (metallurgy) 、 Zinc 、 Electrolyte 、 Metal 、 Hydrogen
摘要: Abstract The observed removal of Co 2+ during cementation on zinc is due to two reactions. One reaction formation a alloy or in solid solutions. second basic cobalt salts, and function local high pH at the surface concentration Zn . close created by evolution hydrogen. This hydrogen stops when core metallic cemented particle consumed, salts may redissolve. Basic redissolve more easily than alloys major reason for redissolution technical purification sulfate electrolyte before electrolysis.
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sci-hub.se 参考文章(9)
V. van der Pas, D.B. Dreisinger, A fundamental study of cobalt cementation by zinc dust in the presence of copper and antimony additives Hydrometallurgy. ,vol. 43, pp. 187- 205 ,(1996) , 10.1016/0304-386X(95)00107-R
K. Tozawa, T. Nishimura, M. Akahori, Miguel A. Malaga, Comparison between purification processes for zinc leach solutions with arsenic and antimony trioxides Hydrometallurgy. ,vol. 30, pp. 445- 461 ,(1992) , 10.1016/0304-386X(92)90099-L
Anna M. Polcaro, Simona Palmas, Stella Dernini, Kinetics of cobalt cementation on zinc powder Industrial & Engineering Chemistry Research. ,vol. 34, pp. 3090- 3095 ,(1995) , 10.1021/IE00048A021
C. Fischer-Bartelk, A. Lange, K. Schwabe, Klärung der ursachen fur die schwierigkeiten der kobalt- und nickelentfernung aus zinksulfatelektrolyten durch Zinkstaubzementation Electrochimica Acta. ,vol. 14, pp. 829- 844 ,(1969) , 10.1016/0013-4686(69)87005-2
Kei Higashi, Hisaaki Fukushima, Takayuki Urakawa, Takeshi Adaniya, Kazuo Matsudo, Mechanism of the Electrodeposition of Zinc Alloys Containing a Small Amount of Cobalt Journal of The Electrochemical Society. ,vol. 128, pp. 2081- 2085 ,(1981) , 10.1149/1.2127194
H. Yan, J. Downes, P. J. Boden, S. J. Harris, A Model for Nanolaminated Growth Patterns in Zn and Zn‐Co Electrodeposits Journal of The Electrochemical Society. ,vol. 143, pp. 1577- 1583 ,(1996) , 10.1149/1.1836682
Georg Steintveit, Hans Holtan, On the Influence of Combinations of Impurities on the Electrolysis of Zinc Journal of The Electrochemical Society. ,vol. 107, pp. 247- 248 ,(1960) , 10.1149/1.2427660
Francis de Blander, René Winand, Influence de l'antimoine et du cuivre sur la cementation du cobalt par le zinc Electrochimica Acta. ,vol. 20, pp. 839- 852 ,(1975) , 10.1016/0013-4686(75)87006-X
M. Yunus, C. Capel-Boute, C. Decroly, Inhibition effect of zinc on the cathodic deposition of cobalt-I. Electrochemical and structural observations in sulphate solutions Electrochimica Acta. ,vol. 10, pp. 885- 900 ,(1965) , 10.1016/0013-4686(65)80001-9