Thioetherification of mercaptanes in C4 hydrocarbon mixtures

US9260386B2 · kind B2 · utility

Assignee

• Evonik Industries AG · DE

Inventors

• Stephan Peitz · Johannesweg, DE
• Markus Winterberg · Waltrop, DE
• Dietrich Maschmeyer · Recklinghausen, DE
• Frank Geilen · Haltern am See, DE
• Reiner Bukohl · Marl, DE
• Joerg Schallenberg · Dorsten, DE
• Armin Matthias Rix · Marl, DE
• Andreas Wolff · Munich, DE
• Matthias Leipold · Haltern am See, DE

Key dates

• Filing date: Jun 25, 2013
• Grant date: Feb 16, 2016
• Expiry date: Jun 25, 2033

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C07C41/06
• WIPO field: Organic fine chemistry
• WIPO sector: Chemistry

Abstract

The invention relates to a method for the thioetherification of mercaptanes with polyunsaturated hydrocarbons, carried out in a reactor with the addition of hydrogen, using a heterogenic catalyst and in the presence of 1-butene. The aim of the invention is to develop such a method to the extent that the creation of value from the C4 raw material stream is increased. Said aim is achieved in that the hydrogen is added to the reaction in such a manner that the molar ratio of hydrogen to polyunsaturated hydrocarbons is no more than one.