Precipitation process

US6811758B1 · kind B1 · utility

Assignee

• European Community, Represented by the Commision of the European Communities · LU

Inventors

• Stephen Pickering · Hamilton, GB
• Boro Djuricic · Weitensfeld im Gurktal, AT

Key dates

• Filing date: Nov 15, 2001
• Grant date: Nov 2, 2004
• Expiry date: Nov 15, 2021

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C01P2004/64
• WIPO field: Materials, metallurgy
• WIPO sector: Chemistry

Abstract

The present invention relates to a process for inducing homogeneous precipitation of a metal oxide, wherein said metal is capable of existing in at least two cationic oxidation states, which process comprises the steps of: i) providing an aqueous solution of a metal in a lower cationic oxidation state; and ii) adding an oxidant capable of oxidising said metal to a higher cationic oxidation state under conditions such that the mixing of said aqueous solution and said oxidant is substantially complete before precipitation of an oxide of said metal in its higher oxidation state occurs.