发明名称 |
Regeneration of dithiophosphorus acid metal extractants |
摘要 |
The invention provides a method of regenerating dithiophosphorus extractants such as dithiophosphoric acids, dithiophosphonic acids and dithiophosphinic acids from their sulfur-sulfur bonded oxidation products contained in an organic solution. The process generates active hydrogen for regenerating the spent dithiophosphorus extractants. Advantageously, this active hydrogen originates either from introducing a reactive metal into a liquid mixture containing the organic solution and an acidic aqueous solution to form nascent hydrogen or from using hydrogen gas in the presence of a catalyst in the organic solution. The active hydrogen generated in the process breaks the sulfur-sulfur bonds of the dithiophosphorus molecules to form the corresponding dithiophosphorus acids.
|
申请公布号 |
US5759512(A) |
申请公布日期 |
1998.06.02 |
申请号 |
US19960658196 |
申请日期 |
1996.06.04 |
申请人 |
CYTEC TECHNOLOGY CORP.;INCO LIMITED |
发明人 |
RICKELTON, WILLIAM ANDREW;MIHAYLOV, INDJE OGNIANOV;LOVE, BRUCE JOHN;LOUIE, PAK KUEN;KRAUSE, EBERHARD |
分类号 |
B01D11/04;C22B3/20;C22B3/38;C22C21/00;F28F21/08;(IPC1-7):B01D11/04;C07F9/02 |
主分类号 |
B01D11/04 |
代理机构 |
|
代理人 |
|
主权项 |
|
地址 |
|