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AssigneeEC Erdolchemie GmbH
InventorsBernhard Schleppinghoff, Hans-Dieter Kohler, Christian Gabel, Hans-Volker Scheef
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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.
A process for the isomerization of alkenes having a terminal double bond to give alkenes having an internal double bond by treating alkenes having a terminal double bond or hydrocarbon feedstocks containing alkenes having a terminal double bond over catalysts containing hydrogenation-active metals in the presence of hydrogen, characterized in that the treatment is carried out in the liquid phase at a temperature from 0.degree. to 120.degree. C. on a macroporous or gel acid 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 (Medeleev) 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.
Dependencies are inferred from the claim text.