Catalyst for steam-reforming methanol

US6051163A · kind A · utility

Assignee

• BASF SE

Inventors

• Otto Kumberger · Mannheim, DE
• Michael Jolyon Sprague · Mannheim, DE
• Otto Hofstadt · Altrip, DE

Key dates

• Filing date: Sep 9, 1998
• Grant date: Apr 18, 2000
• Expiry date: Sep 9, 2018

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y10S502/524
• WIPO field: Materials, metallurgy
• WIPO sector: Chemistry

Abstract

In a process for steam-reforming methanol, in which methanol and water are reacted at a catalyst with formation of hydrogen, the catalyst used can be prepared by PA0 (a) precipitating a solution of zinc salts and aluminum salts, the atomic ratio of Zn:Al being from 3:1 to 1:3, with an alkali metal carbonate solution or alkali metal hydroxide solution at a pH in the range from 5 to 12 and at from 20 to 100.degree. C., PA0 (b) separating off and washing the precipitate to remove alkali metal ions, PA0 (c) drying the precipitate, PA0 (d) calcining the precipitate at from 250 to 800.degree. C. to give a mixed oxide, PA0 (e) dispersing the mixed oxide in an acidic solution of copper salts and zinc salts, the atomic ratio of Cu:Zn being from 1:5 to 20:1 in the solution, PA0 (f) precipitating the dispersion with an alkali metal carbonate solution or alkali metal hydroxide solution at a pH in the range from 6 to 9 and at from 20 to 100.degree. C., PA0 (g) carrying out the steps (b) to (d), the solutions in steps (a) and/or (e) can additionally comprise salts or oxides of one or more elements selected from the group consisting of the platinum metals, groups 4, 5, 11 and the lanthanides of t…