Process for obtaining a high-hydrogen, low-carbon-monoxide gas

US5904913A · kind A · utility

Assignee

• Daimler-Benz AG · DE

Inventors

• Gustav Bohm · Überlingen, DE
• Theodor Staneff · Bermatingen, DE
• Jürgen Steinwandel · Überlingen, DE

Key dates

• Filing date: Jan 30, 1997
• Grant date: May 18, 1999
• Expiry date: Jan 30, 2017

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y02P20/52
• WIPO field: Materials, metallurgy
• WIPO sector: Chemistry

Abstract

The invention relates to a process and an apparatus for obtaining a high-hydrogen, low-carbon-monoxide gas which is suitable for feeding low-temperature fuel cells in electric vehicles. A high-hydrogen gas mixture is generated by means of a methanol reforming reaction, using a Cu- and ZrO-containing catalyst material. The carbon monoxide content of the gas is decreased to a concentration of less than approximately 100 ppm by means of a selective methanization using a Ru- and TiO.sub.2 -containing catalyst material and/or by means of a selective oxidation using a Pt- and TiO.sub.2 -containing catalyst material.