Method of preparing hydrogen cyanide

US4961914A · kind A · utility

Assignee

• Degussa AG · DE

Inventors

• Michael Witzel · Frankfurt, DE
• Peter Kleinschmit · Hanau, DE
• Wolf-Dieter Pfeifer
• Carl Voigt · Nampa, US
• Peter Albers · Hanau, DE

Key dates

• Filing date: Jul 14, 1988
• Grant date: Oct 9, 1990
• Expiry date: Jul 14, 2008

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C01C3/0229
• WIPO field: Materials, metallurgy
• WIPO sector: Chemistry

Abstract

As a result of a special form of the surface coating of Al.sub.2 O.sub.3 catalysts using additional amounts of aluminum ions and very slight amounts of platinum ions, Al.sub.2 O.sub.3 was able to be used as catalyst for continuous operation (150 days and longer) in the preparation of hydrogen cyanide from hydrocarbons and ammonia, preferably in the BMA method.