Catalytic system and a process for preparing alpha, omega-C.sub.4 through C.sub.20 alkenols

US4695661A · kind A · utility

Assignee

• Huls Aktiengesellschaft · DE

Inventors

• Walter K. Homann · Schneverdingen, DE
• Lothar Fischer · Marl, DE

Key dates

• Filing date: Mar 19, 1986
• Grant date: Sep 22, 1987
• Expiry date: Mar 19, 2006

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C07C29/60
• WIPO field: Organic fine chemistry
• WIPO sector: Chemistry

Abstract

In order to produce pure alpha, omega-C.sub.4 to C.sub.20 alkenols having purities in excess of 90% by dehydrating the corresponding alpha, omega-C.sub.4 to C.sub.20 diols, a catalyst is used which was prepared by using an alkaline earth orthophosphate or alkaline earth hydrogen phosphate or by reacting an alkaline earth compound with phosphoric acid into the corresponding phosphate and then adding an alkali or alkaline earth compound. This catalyst is suitable to be shaped, next it is dried and then calcined at temperatures between 350.degree. and 950.degree. C. The educt dehydration takes place at temperatures between 300.degree. and 500.degree. C. in selective and partial manner to obtain pure alpha, omega-C.sub.4 to C.sub.20 alkenols at conversions exceeding 90%.