引用本文:
王锦化, 牛德仲, 宋保林. Au(Ⅲ)、Ag(Ⅰ)与巯基乙酰苯胺的配合物及其在贵金属回收中的应用[J]. 应用化学,
1992, 9(1): 106-109.
Citation: Wang Jinhua, Niu Dezhong, Song Baolin. THE COORDINATION COMPOUNDS OF Au(Ⅲ), Ag(Ⅰ) WITH MERCAPTOACETANIL AND THEIR APPLICATION IN RECOVERY OF PRECIOUS METALS[J]. Chinese Journal of Applied Chemistry, 1992, 9(1): 106-109.
Citation: Wang Jinhua, Niu Dezhong, Song Baolin. THE COORDINATION COMPOUNDS OF Au(Ⅲ), Ag(Ⅰ) WITH MERCAPTOACETANIL AND THEIR APPLICATION IN RECOVERY OF PRECIOUS METALS[J]. Chinese Journal of Applied Chemistry, 1992, 9(1): 106-109.
Au(Ⅲ)、Ag(Ⅰ)与巯基乙酰苯胺的配合物及其在贵金属回收中的应用
English
THE COORDINATION COMPOUNDS OF Au(Ⅲ), Ag(Ⅰ) WITH MERCAPTOACETANIL AND THEIR APPLICATION IN RECOVERY OF PRECIOUS METALS
Abstract:
The properties of the coordination compoands of Au(Ⅲ), Au(Ⅰ) and Ag(Ⅰ) with mercapto-acetanil (MAA or HL) are reported.The AuL3 type of the compounds is synthesized for the first time and characterized by elemental analysis, UV, IR and TG-DTA. The ligand (MAA) selectively chelates Au(Ⅲ) from acidic solution or aqua regia containing ions such as Ca, Mg, Cd, Mn, Co, Ni, Cu, Zn and Fe. The formed AuL3. then converts into Au(Ⅰ)L in absolute ethyl alcohol. The gold and silver were recovered through high temperature decomposition of the AuL3 and AgL, respectively. The recovery ratio for gold is over 97%, for silver over 98%. The purity of the obtained gold is 99.89~99.98%. The cost of the method is much lower than that of using zinc pyridinethione as a chelating agent.
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Key words:
- Au(Ⅲ)
- / Ag(Ⅰ)
- / mercapto-acetanil
- / coordination compound
- / recouery
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