发明名称 |
METHOD FOR DISSOCIATING METALS OR DISSOCIATING METAL COMPOUNDS |
摘要 |
<p>A method for dissociating metal-ligand complexes in a supercritical fluid by treating the metal-ligand complex with heat and/or reducing or oxidizing agents. Once the metal-ligand complex is dissociated, the resulting metal and/or metal oxide form fine particles of substantially uniform size. In preferred embodiments, the solvent is supercritical carbon dioxide and the ligand is a beta -diketone such as hexafluoroacetylacetone or dibutyldiacetate. In other preferred embodiments, the metals in the metal-ligand complex are copper, silver, gold, tungsten, titanium, tantalum, tin, or mixtures thereof. In preferred embodiments, the reducing agent is hydrogen. The method provides an efficient process for dissociating metal-ligand complexes and produces easily-collected metal particles free from hydrocarbon solvent impurities. The ligand and the supercritical fluid can be regenerated to provide an economic, efficient process.</p> |
申请公布号 |
WO9909223(A1) |
申请公布日期 |
1999.02.25 |
申请号 |
WO1997US18083 |
申请日期 |
1997.10.06 |
申请人 |
IDAHO RESEARCH FOUNDATION, INC. |
发明人 |
SMART, NEIL, G.;WAI, CHIEN, M.;HUNT, FRED, H.;YUEHE, LIN |
分类号 |
C22B3/00;B22F9/24;B22F9/26;B22F9/30;C01B13/18;C01G19/02;C01G23/053;C01G53/04;C22B3/22;C22B3/26;C23C16/44;C23C16/448;(IPC1-7):C22B3/44;C23C16/06 |
主分类号 |
C22B3/00 |
代理机构 |
|
代理人 |
|
主权项 |
|
地址 |
|