Processes for regenerating sulfur-poisoned, ruthenium and/or ruthenium compound-containing catalysts

US8889578B2 · kind B2 · utility

Assignee

• Bayer MaterialScience AG · DE

Inventors

• Timm Schmidt · Kaarst, DE
• Tim Loddenkemper · Dormagen, DE
• Frank Gerhartz · Leverkusen, DE
• Walther Müller · Pulheim, DE

Key dates

• Filing date: Mar 23, 2009
• Grant date: Nov 18, 2014
• Expiry date: May 31, 2029

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y02P20/584
• WIPO field: Chemical engineering
• WIPO sector: Chemistry

Abstract

Processes comprising: providing a catalyst comprising a catalytic component selected from the group consisting of ruthenium, ruthenium compounds, and combinations thereof, wherein the catalyst is sulfur-poisoned with one or more sulfur compounds; and treating the catalyst with a gas stream comprising a hydrogen halide under nonoxidative conditions such that the catalyst is regenerated.