Method of producing a catalyst from clay minerals for the hydration of olefins

US4329257A · kind A · utility

Assignee

• Chemische Werke Huels Aktiengesellschaft · US

Inventors

• August Sommer
• Wilhelm Heitmann · Herne, DE
• Rainer Brucker · Castrop-Rauxel, DE

Key dates

• Filing date: Jul 23, 1980
• Grant date: May 11, 1982
• Expiry date: Jul 23, 2000

Classification

• Technology area (CPC B): Performing Operations; Transporting
• CPC primary: B01J27/16
• WIPO field: Chemical engineering
• WIPO sector: Chemistry

Abstract

A method for producing a catalyst comprising phosphoric acid and a carrier, for the hydration of olefins with 2-3 carbon atoms to the corresponding alcohols, the method comprising: PA1 contacting a clay, containing essentially montmorillonite, contaminated by no more than 3% accompanying minerals and containing up to 0.5% by weight K.sub.2 O, or a mineral of the montmorillonite group, containing no potassium, but having the montmorillonite crystalline lattice, with an acid until it has an Al.sub.2 O.sub.3 content of 13-18% by weight and a surface area of 200-400 m.sup.2 /g; PA1 admixing the so-treated clay with 5-15% by weight, based on the total dry admixture, of one or more oxides of metals of Group VI of the Periodic System; PA1 adjusting the water content of the admixture to 20-35% by weight; PA1 pressing the admixture into a desired shape and calcining at 500.degree.-800.degree. C.; PA1 treating the so-formed carrier material with an acid until it has an Al.sub.2 O.sub.3 content of 1-5% by weight and a specific surface area of 150-250 m.sup.2 /g; and PA1 then impregnating the resulting carrier with phosphoric acid; and the catalysts so-produced are disclosed.