Process for the production of acrolein

US5387720A · kind A · utility

Assignee

• Degussa AG · DE

Inventors

• Armin Neher · Wesseling, DE
• Thomas Haas · Munster, DE
• Dietrich Arntz · Oberursel, DE
• Herbert Klenk · Hanau, DE
• Walter Girke · Hanau, DE

Key dates

• Filing date: Nov 12, 1993
• Grant date: Feb 7, 1995
• Expiry date: Nov 12, 2013

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C07C45/52
• WIPO field: Organic fine chemistry
• WIPO sector: Chemistry

Abstract

A process for the production of acrolein by dehydration of glycerol in the liquid phase or in the gaseous phase, in each case on acidic solid catalysts, is described. Compared with previously known processes, the space-time yield and catalyst service life may be surprisingly increased with higher selectivity by treating a glycerol-water mixture with a glycerol content of 10 to 40 wt. % at 180.degree. to 340.degree. C. (liquid phase) or at 250.degree. to 340.degree. C. (gaseous phase) on a solid catalyst with an H.sub.o value (Hammett acidity function) of less than +2, preferably less than -3.