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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. shu

THE COORDINATION COMPOUNDS OF Au(Ⅲ), Ag(Ⅰ) WITH MERCAPTOACETANIL AND THEIR APPLICATION IN RECOVERY OF PRECIOUS METALS

1.
Department of Chemistry, Xuzhou Teacher's College, Xuzhou 221009

Corresponding author: Song Baolin,
Received Date: 14 January 1991
Available Online: 15 August 1991
Fund Project:

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.
- Au(Ⅲ),
- Ag(Ⅰ),
- mercapto-acetanil,
- coordination compound,
- recouery
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