Oligomerization of alkenes in a plurality of successive heterogeneous catalyst zones

US7291759B2 · kind B2 · utility

Assignee

• BASF SE

Inventors

• Thomas Heidemann · Viernheim, DE
• Ursula Siebenhaar · Schifferstadt, DE

Key dates

• Filing date: Jun 27, 2003
• Grant date: Nov 6, 2007
• Expiry date: Nov 2, 2024

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C07C2527/02
• WIPO field: Organic fine chemistry
• WIPO sector: Chemistry

Abstract

Process for oligomerizing an alkene stream over a solid catalyst comprising sulfur and nickel, in which the oligomerization is carried out in two or more successive catalyst zones and the molar ratio of sulfur to nickel in the first catalyst zone is less than 0.5 and that in the last catalyst zone is 0.5 or more and, in the case of further catalyst zones between the first and last catalyst zones, the molar ratio of sulfur to nickel in each catalyst zone is not less than that in the immediately preceding catalyst zone, based on the main flow direction of the feed stream.