Process for preparing an alkanesulphonic acid

US10399934B2 · kind B2 · utility

Assignee

• EVONIK DEGUSSA GMBH · DE

Inventors

• Benjamin Fonfe · Frankfurt, DE
• Nadine Duerr · Zwingenberg, DE
• Harald Jakob · Hasselroth, DE
• Chiu Kee Cheung · Alzenau, DE
• Andreas Doerflein · Großkrotzenburg, DE
• Sebastian Fuss · Flieden, DE

Key dates

• Filing date: Nov 30, 2016
• Grant date: Sep 3, 2019
• Expiry date: Nov 30, 2036

Classification

• Technology area (CPC B): Performing Operations; Transporting
• CPC primary: B01J2219/00707
• WIPO field: Organic fine chemistry
• WIPO sector: Chemistry

Abstract

The present invention relates to a process for preparing alkanesulphonic acid by oxidizing an alkyl mercaptan, a dialkyl disulphide and/or a dialkyl polysulphide having three to nine sulphur atoms with an oxidizing agent, wherein additional oxidizing agent is fed into the oxidation if as yet unoxidized alkyl mercaptan and/or unoxidized dialkyl disulphide and/or at least one intermediate from the oxidation of the dialkyl disulphide and/or of the dialkyl polysulphide is present in the reaction output, and a corresponding apparatus for performance of oxidation reactions.