Hydrogenation catalyst, a process for its preparation, and use thereof

US5498587A · kind A · utility

Assignee

• Hoechst GmbH · DE

Inventors

• Gregor Deckers · Frankfurt, DE
• Gerhard Diekhaus · Oberhausen, DE
• Bernd Dorsch · Bottrop, DE
• Carl D. Frohning · Wesel, DE
• Gerhardt Horn · Oberhausen, DE
• Horst B. Horrig · Oberhausen, DE

Key dates

• Filing date: Mar 24, 1994
• Grant date: Mar 12, 1996
• Expiry date: Mar 24, 2014

Classification

• Technology area (CPC B): Performing Operations; Transporting
• CPC primary: B01J35/66
• WIPO field: Chemical engineering
• WIPO sector: Chemistry

Abstract

A hydrogenation catalyst comprising 25 to 50% by weight of nickel (metallic) 10 to 35% by weight of nickel oxide 4 to 12% by weight of magnesium oxide 1 to 5% by weight of sodium oxide the remainder being a water-insoluble support material, PA1 wherein the total of nickel and nickel oxide is 40% to 70% by weight, and the catalyst has a surface area, determined by BET, of 80 to 200 m.sup.2 /g and a total pore volume of 0.35 to 0.6 ml/g. The total pore volume is made up of 30% to 60% by volume from pores having pore radii of .ltoreq.40 .ANG., 4% to 10% by volume from pores having pore radii of >40 to 300 .ANG., and 30% to 60% by volume from pores having pore radii of >300 to 5000 .ANG.. A process for preparing the hydrogenation catalyst which comprises preparing, in a precipitation step, a green catalyst from a nickel salt, a magnesium salt, sodium carbonate, and the support material, separating off the mother liquor and partially washing the precipitate, slurrying the green catalyst in alkali solution, separating it from the liquid phase, drying it, and contacting the dried green catalyst with hydrogen until 48% to 86% by weight of the total nickel content is present in metallic for…