Preparation of N-(2-hydroxyethyl)-piperazine

US5455352A · kind A · utility

Assignee

• BASF SE

Inventors

• Michael Huellmann · Heppenheim, DE
• Rainer Becker · Bad Dürkheim, DE
• Emil Scharf · Ludwigshafen, DE

Key dates

• Filing date: Jul 28, 1994
• Grant date: Oct 3, 1995
• Expiry date: Jul 28, 2014

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y02P20/582
• WIPO field: Organic fine chemistry
• WIPO sector: Chemistry

Abstract

Preparation of N-(2-hydroxyethyl)-piperazine by reacting triethanolamine with ammonia in the presence of hydrogen at from 100.degree. to 500.degree. C. and from 10 to 500 bar over a heterogeneous catalyst in which the catalytically active material contains from 20 to 85% by weight of ZrO.sub.2 or Al.sub.2 O.sub.3 or mixtures thereof, from 1 to 30% by weight of at least one copper oxide, calculated as CuO, and from 1 to 60% by weight of at least one oxide of cobalt, nickel or molybdenum, calculated as CoO, NiO and MoO.sub.3, respectively.