Process for the manufacture of nano-sized powders

US8147793B2 · kind B2 · utility

Assignee

• UMICORE · BE

Inventors

• Stijn Put · Olmen, BE
• Yves Van Rompaey · Westerlo, BE
• Sylvain Van Den Rul · Aartselaar, BE

Key dates

• Filing date: Oct 18, 2007
• Grant date: Apr 3, 2012
• Expiry date: Feb 20, 2028

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C01P2006/12
• WIPO field: Micro-structural and nano-technology
• WIPO sector: Chemistry

Abstract

Nano-sized metal-bearing powders and doped-powders are synthesized by means of a process whereby a non-volatile metal-bearing precursor powder or powder mixture is dispersed in a hot gas stream at relatively low temperatures. A first volatile reactant is added, converting the metal in the precursor into a volatile metal compound. Subsequently a second volatile reactant is injected into the gas stream, converting the volatile metal compound into a solid, which condenses as a nano-sized metal-bearing powder upon quenching. Finally, the vapour/metal-bearing powder mixture is separated from the gas stream.