Reduction of the content of compounds containing oxygen and/or nitrogen in material flows containing isobutene

US7399404B2 · kind B2 · utility

Assignee

• BASF SE

Inventors

• Thomas Wettling · Schifferstadt, DE
• Dirk Borchers · Birkenheide, DE

Key dates

• Filing date: May 14, 2004
• Grant date: Jul 15, 2008
• Expiry date: May 6, 2025

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C07C7/13
• WIPO field: Organic fine chemistry
• WIPO sector: Chemistry

Abstract

A process for reducing the content of oxygen-containing and/or nitrogen-containing compounds in streams having an isobutene content of at least 10% by weight, which comprises passing the stream in the liquid state at a temperature T [in K] and a linear velocity v [in cm/min] over a fixed bed of an acid-free zeolite having a mean pore size of from 0.3 to 1.5 nm, where the fixed bed has a length l [in cm] in the flow direction of the stream and T, v and l obey the relationship2(T−283 K)/10 K·l/v≦500 min,is described. The process avoids the formation of isobutene oligomers.