Reactive milling process for the manufacture of a hydrogen storage alloy

US7540439B2 · kind B2 · utility

Assignees

• Johnson Matthey Public Limited Company · GB
• Liebniz-Institut fur Festkörper-und Werkstoffforschung Dresden · DE

Inventors

• Allin S. Pratt · Wallingford, GB
• Oliver Gutfleisch · Darmstadt, DE

Key dates

• Filing date: Aug 1, 2003
• Grant date: Jun 2, 2009
• Expiry date: May 29, 2025

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y02E60/50
• WIPO field: Materials, metallurgy
• WIPO sector: Chemistry

Abstract

A process for the manufacture of a hydrogen storage material comprises comminuting a source of magnesium under a reducing atmosphere for a time sufficient to produce particles of a required particle size and crystallite size. At least one reducible PGM compound is introduced and substantially reduced during comminution such that it is distributed substantially at the surface of the particles.