Process for the isomerization of alkenes having a terminal double bond to give alkenes having an internal double bond

US5008466A · kind A · utility

Assignee

• EC Erdolchemie GmbH · DE

Inventors

• Bernhard Schleppinghoff · Dormagen, DE
• Hans-Dieter Kohler · Dormagen, DE
• Christian Gabel · Dormagen, DE
• Hans-Volker Scheef · Dormagen, DE

Key dates

• Filing date: Apr 12, 1989
• Grant date: Apr 16, 1991
• Expiry date: Apr 12, 2009

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C07C2531/26
• WIPO field: Organic fine chemistry
• WIPO sector: Chemistry

Abstract

Alkenes having a terminal double bond can be isomerized to give alkenes having an internal double bond if alkenes having a terminal double bond or hydrocarbon feedstock having a content of alkenes of this type having a terminal double bond are subjected to treatment, in the presence of hydrogen, over a macroporous or gel-like cation exchanger in the H.sup.+ form which contains 0.001 to 10 g of one or more metals of the VIth and/or VIIth and/or VIIIth sub-group of the periodic system of the elements in elementary form per liter of dry cation exchanger and which has a degree of crosslinking of 2 to 65% and a specific surface area of 5 to 750 m.sup.2 /g of dry exchange resin. The treatment is carried out in the liquid phase at a temperature from 0.degree. to 120.degree. C.