Method of manufacturing a hydrogenation catalyst

US6083468A · kind A · utility

Assignee

• BASF SE

Inventors

• Daniel Heineke · Ludwigshafen, DE
• Gunther Achhammer · Mannheim, DE
• Heinz-Walter Schneider · Ludwigshafen, DE
• Alfred Thome · Speyer, DE

Key dates

• Filing date: Oct 8, 1998
• Grant date: Jul 4, 2000
• Expiry date: Oct 8, 2018

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C01B21/1418
• WIPO field: Materials, metallurgy
• WIPO sector: Chemistry

Abstract

A hydrogenation catalyst is prepared by reduction of platinum in an oxidation state of not less than two using a reducing agent in an aqueous medium in the presence of a carbon-containing support after partial poisoning, where use is made of a compound of the general formula I ##STR1## where X, Y and Z can be identical or different and are hydrogen, C.sub.1 -C.sub.18 -alkyl, C.sub.5 -C.sub.10 -cycloalkyl, halogen, hydroxyl, C.sub.1 -C.sub.6 -alkoxy and --NR'R", where R, R' and R" can be identical or different and can be hydrogen, C.sub.1 -C.sub.18 -alkyl or C.sub.5 -C.sub.10 -cycloalkyl. Such a hydrogenation catalyst can be used for preparing hydroxylammonium salts and the process for preparing the above catalysts can also be used for regenerating hydrogenation catalysts based on platinum.