Catalyst for the preparation of methyl mercaptan

US7723261B2 · kind B2 · utility

Assignee

• EVONIK DEGUSSA GMBH · DE

Inventors

• Jan-Olaf Barth · Siegsdorf, DE
• Hubert Redlingshöfer · Neustadt an der Aisch, DE
• Christoph Weckbecker · Gelnhausen, DE
• Klaus Huthmacher · Gelnhausen, DE
• Horst-Werner Zanthoff · Neheim, DE
• Ralf Mayer · Essen, DE

Key dates

• Filing date: Apr 14, 2008
• Grant date: May 25, 2010
• Expiry date: Apr 14, 2028

Classification

• Technology area (CPC B): Performing Operations; Transporting
• CPC primary: B01J37/20
• WIPO field: Chemical engineering
• WIPO sector: Chemistry

Abstract

The present invention refers to a catalyst for the manufacture of methyl mercaptan from carbon oxides comprising Mo and K compounds and oxides or sulfides of metals chosen from the manganese group. The improvement of the present process consists of the fact that carbon dioxide can be converted with higher conversions and selectivities to methyl mercaptan as compared to state-of-the-art technologies, with only minor amounts of carbon monoxide being formed as side product. Simultaneously, carbon monoxide can be easily converted into carbon dioxide and hydrogen by reaction with water using established water-gas-shift-technologies thus increasing the overall selectivity to methyl mercaptan.