Mechanochemical synthesis of rare earth sulfides

US11505471B2 · kind B2 · utility

Assignee

• RHODIA OPERATIONS · FR

Inventors

• Lauriane D'Alencon · Issy-les-Moulineaux, FR
• Thierry Le Mercier · Rosny-sous-Bois, FR
• Marc-David Braida · Aubervilliers, FR
• Jacinthe Gamon · Paris, FR
• Philippe Barboux · Paris, FR

Key dates

• Filing date: Dec 18, 2018
• Grant date: Nov 22, 2022
• Expiry date: Jan 10, 2039

Classification

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

Abstract

The present invention pertains to a process for preparing particles of rare earth sulfide comprising the steps of:—preparing a reaction mixture comprising at least one compound comprising at least one rare earth element (A) and at least one alkali metal sulfide (B),—submitting said reaction mixture to a mechanical stress so as to cause a chemical reaction that produces the particles of rare earth sulfide.