Method of producing expoxides in the gaseous phase

US6323349A · kind A · utility

Assignee

• Degussa-Huels AG · DE

Inventors

• Rudiger Schutte · Scheinfeld, DE
• Georg Markowz · Alzenau, DE
• Peter Esser · Recklinghausen, DE
• Torsten Balduf · Pfungstadt, DE
• Georg Thiele · Hanau, DE
• Steffen Hasenzahl · Hanau, DE

Key dates

• Filing date: Jan 19, 2001
• Grant date: Nov 27, 2001
• Expiry date: Jan 19, 2021

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C07D301/12
• WIPO field: Organic fine chemistry
• WIPO sector: Chemistry

Abstract

A method for epoxidation of olefins with 2 to 6 C atoms, especially propene, with hydrogen peroxide in the gas phase at a temperature below 250.degree. C. The reaction is carried out by bringing a gas mixture containing the olefin, hydrogen peroxide and water into contact with the catalyst from the series of compounds of an element of the 4th to the 6th subgroup of the periodic table or of arsenic or selenium and molecular sieves in the absence of a liquid phase. Titanium-containing molecular sleeves are preferred catalysts.