Oligomerization of olefins to highly linear oligomers, and catalysts for this purpose

US5849972A · kind A · utility

Assignee

• BASF SE

Inventors

• Maximilian Vicari · Schifferstadt, DE
• Peter Polanek · Weinheim, DE

Key dates

• Filing date: May 16, 1996
• Grant date: Dec 15, 1998
• Expiry date: May 16, 2016

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C07C2523/755
• WIPO field: Chemical engineering
• WIPO sector: Chemistry

Abstract

Straight-chain C.sub.2 -C.sub.6 -olefins are oligomerized to their dimers, trimers and tetramers by means of a fixed-bed catalyst, at superatmospheric pressure and at room temperature or elevated temperatures, by a process in which the catalyst used is one which contains, as active components, after deduction of the loss on ignition following heating at 900.degree. C., from 10 to 70% by weight of nickel oxide, calculated as NiO, from 5 to 30% by weight of titanium dioxide or zirconium dioxide, from 0 to 20% by weight of alumina, from 20 to 40% by weight of silica and from 0.01 to 1% by weight of an alkali metal oxide, with the proviso that the contents of the individual components in the catalyst sum to 100% by weight.