Metathesis catalyst, and its preparation and use

US6130181A · kind A · utility

Assignee

• BASF SE

Inventors

• Peter Schwab · Bad Dürkheim, DE
• Boris Breitscheidel · Fulda, DE
• Ralf Schulz · Speyer, DE
• Michael Schulz · Ludwigshafen, DE
• Ulrich Müller · Neustadt, DE

Key dates

• Filing date: Aug 11, 1999
• Grant date: Oct 10, 2000
• Expiry date: Aug 11, 2019

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C07C2523/36
• WIPO field: Chemical engineering
• WIPO sector: Chemistry

Abstract

A catalyst containing Re.sub.2 O.sub.7 on an inorganic support, wherein the Re.sub.2 O.sub.7 component is on the support in the form of Re.sub.2 O.sub.7 particles having a diameter of <1 nm, the rhenium surface area, determined by N.sub.2 O pulse chemisorption, is at least 0.4 m.sup.2 /g, and the Re.sub.2 O.sub.7 component is distributed over the support in the form of an outer shell having a maximum thickness of 1.5 mm.