Use of phosphoric acid as a homogeneous catalyst during the preparation of ketene

US6395935B1 · kind B1 · utility

Assignee

• Axiva GmbH · DE

Inventors

• Jochen Baurmeister · Eppstein, DE
• Thomas Schäfer · Karlsdorf-Neuthard, DE

Key dates

• Filing date: Apr 27, 2000
• Grant date: May 28, 2002
• Expiry date: Apr 27, 2020

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C07C45/89
• WIPO field: Organic fine chemistry
• WIPO sector: Chemistry

Abstract

The invention relates to a process for the catalytic pyrolysis of acetic acid for preparing ketene and/or secondary products, which comprises spraying, as catalyst, phosphoric acid in the form of a liquid jet into the acetic acid vapor.