Process for the preparation of hydrogen peroxide by the anthraquinone cyclic process

US7238335B2 · kind B2 · utility

Assignee

• Degussa AG · DE

Inventors

• Gustaaf Goor · Hanau, DE
• Eugen Staab · Mobile, US
• Jürgen Glenneberg · Offenbach, DE

Key dates

• Filing date: Aug 6, 2004
• Grant date: Jul 3, 2007
• Expiry date: Jul 8, 2025

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C01B15/023
• WIPO field: Materials, metallurgy
• WIPO sector: Chemistry

Abstract

The invention concerns a process for the preparation of hydrogen peroxide by the anthraquinone cyclic process. The process includes a regeneration stage in which working solution is regenerated by being brought into contact with an aqueous solution containing an alkyl anthrahydroquinone and/or an alkyl tetrahydroanthrahydroquinone in deprotonated form. The working solution regenerated in the regeneration stage is returned to the cyclic process.