Method for the production of adipodinitrile by hydrocyanation of 1,3-butadiene

US7528275B2 · kind B2 · utility

Assignee

• BASF SE

Inventors

• Michael Bartsch · Neustadt, DE
• Robert Baumann · Mannheim, DE
• Gerd Haderlein · Bad Kötzting, DE
• Miguel Flores · Mannheim, DE
• Tim Jungkamp · Sandhausen, DE
• Hermann Luyken · Ludwigshafen, DE
• Jens Scheidel · Hirschberg, DE
• Wolfgang Siegel · Schifferstadt, DE

Key dates

• Filing date: Jan 26, 2005
• Grant date: May 5, 2009
• Expiry date: May 11, 2026

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C07C253/10
• WIPO field: Organic fine chemistry
• WIPO sector: Chemistry

Abstract

A process is described for preparing adiponitrile by hydrocyanating 1,3-butadiene over a catalyst, by, in a first process step, hydrocyanating 1,3-butadiene to 3-pentenenitrile over at least one nickel(0) catalyst, and, in a second process step, hydrocyanating 3-pentenenitrile to adiponitrile over at least one nickel(0) catalyst with addition of at least one Lewis acid, wherein at least one of the at least one nickel(0) catalysts used in the particular process steps is transferred into the other process step.