Process for hydrogenating an aromatic amine in the presence of a supported ruthenium catalyst

US7030052B2 · kind B2 · utility

Assignee

• Degussa AG · DE

Inventors

• Guido Stochniol · Haltern am See, DE
• Bernd Jaeger · Emmelshausen, DE
• Thomas Haas · Munster, DE
• Norbert Finke · Johannesweg, DE
• Werner Burkhardt · Wächtersbach, DE
• Juergen Grunert · Alzenau, DE

Key dates

• Filing date: Jun 2, 2003
• Grant date: Apr 18, 2006
• Expiry date: Jun 2, 2023

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C07C2601/14
• WIPO field: Chemical engineering
• WIPO sector: Chemistry

Abstract

The invention relates to a process for hydrogenating an aromatic amine that has at least one amino group bound to an aromatic nucleus with hydrogen in the presence of a supported catalyst that contains at least ruthenium as active metal. The catalyst support has a BET surface area in the range from greater than 30 m2/g to less than 70 m2/g and more than 50% of the pore volume of the catalyst support is formed by macropores having a pore diameter of greater than 50 nm and less than 50% are mesopores having a pore diameter of 2 to 50 nm.