Process for the preparation of nicotinic acid

US6229018A · kind A · utility

Assignee

• Degussa AG · DE

Inventors

• Dieter Heinz · Heppenheim, DE
• Wolfgang Holderich · Bischofswerda, DE
• Steffen Krill · Mühltal, DE
• Wolfgang Bock · Munich, DE
• Klaus Huthmacher · Gelnhausen, DE

Key dates

• Filing date: Aug 31, 1999
• Grant date: May 8, 2001
• Expiry date: Aug 31, 2019

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C07D213/80
• WIPO field: Organic fine chemistry
• WIPO sector: Chemistry

Abstract

A process for the preparation of nicotinic acid by the direct oxidation of .beta.-picoline in the gas phase, wherein water and .beta.-picoline are fed separately to the catalyst bed and the catalyst is based on a titanium dioxide support which has been prepared by the sulfate method and has a high specific surface area and a vanadium oxide content of from 5 to 50 %.