Process for preparing a catalyst for reducing carbon monoxide

US4146503A · kind A · utility

Assignee

• Hoechst GmbH · DE

Inventors

• Wilhelm Vogt · Lichtenau, DE
• Jurgen Koch · Refrath, DE
• Hermann Glaser · Lechenich, DE

Key dates

• Filing date: Nov 23, 1977
• Grant date: Mar 27, 1979
• Expiry date: Nov 23, 1997

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C07C2523/745
• WIPO field: Chemical engineering
• WIPO sector: Chemistry

Abstract

A catalyst containing iron or a mixture of iron with copper as its active ingredient, made by precipitating a complex salt of the general formula: EQU Me.sub.x [Fe(CN).sub.6 ].sub.y in which Me stands for an iron and/or copper ion, X stands for 1, 2, 3 or 4, and y stands for 1, 2 or 3; separating and drying the precipitated salt, and reducing the salt by contacting it with at least stoichiometric proportions of hydrogen or a mixture of hydrogen and carbon monoxide, for use in the reduction of carbon monoxide by means of hydrogen with the resultant formation of a mixture consisting substantially of C.sub.1 -C.sub.4 hydrocarbons is modified. The modified catalyst is formed PA1 (a) by subjecting the precipitated and dried salt to thermal decomposition at a temperature of 200.degree. to 500.degree. C. in the absence of hydrogen or a mixture of hydrogen and carbon monoxide, or PA1 (b) mixing the precipitated and dry salt with a carrier, tabletting, pelletizing or extruding the resulting mixture and reducing it by means of hydrogen or a mixture of hydrogen and carbon monoxide, or PA1 (c) mixing the precipitated and dry salt with a carrier, tabletting, pelletizing or extruding the resulti…