Method for producing low-odor n-butane

US8846994B2 · kind B2 · utility

Assignee

• EVONIK DEGUSSA GMBH · DE

Inventors

• Hans-Gerd Lueken · Marl, DE
• Alfred Kaizik · Marl, DE
• Markus Winterberg · Waltrop, DE
• Wilfried Bueschken · Haltern, DE
• Dirk Fridag · Haltern am See, DE

Key dates

• Filing date: May 21, 2010
• Grant date: Sep 30, 2014
• Expiry date: May 21, 2030

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C07C7/163
• WIPO field: Organic fine chemistry
• WIPO sector: Chemistry

Abstract

The invention relates to a method for producing low-odor n-butane by catalytic hydrogenation of a feed mixture. The aim of the invention is to provide such a method, wherein the feed material, in addition to n-butane, n-butene and up to 1 mass % formic acid and/or up to 1 mass % pentanals and/or up to 0.5 mass % pentanols, also comprises carbon monoxide. The aim is achieved by treating the feed mixture in the temperature range of 15 to 120° C. with an aqueous solution of an alkali metal or alkaline earth metal hydroxide in the concentration range of 0.5 to 30 mass % and subsequently subjecting the feed mixture to the catalytic hydrogenation.