Process for the synthesis of magnesium aluminate spinels

US9340432B2 · kind B2 · utility

Assignee

• Sasoi Performance Chemicals GmbH · DE

Inventors

• Brian Peoples · Lake Charles, US
• David A. Barclay · Austin, US
• Mark M. Chavez · Westlake, US
• Allison L. Hann · Westlake, US
• Andrea Brasch · Meldorf, DE
• Klaus Diblitz · Hamburg, DE

Key dates

• Filing date: Apr 15, 2013
• Grant date: May 17, 2016
• Expiry date: Apr 15, 2033

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C04B2235/763
• WIPO field: Materials, metallurgy
• WIPO sector: Chemistry

Abstract

Magnesium aluminate spinels are made by hydrothermally aging an aqueous slurry of a spinel precursor which can be (a) a mixture of boehmite alumina and a magnesium precursor, (b) an aluminum magnesium oxide or hydroxide, and (c) mixtures thereof. At least one of the aged slurries is dried to remove water and produce at least one dried spinel precursor. The dried spinel precursor is then calcined to produce the magnesium aluminate spinel.