RO81798B1 - Catalyst for carbon monoxide conversion and process for obtaining the same - Google Patents

Abstract

The present invention relates to a catalyst for the conversion of carbon monoxide and to a process for the production thereof. At least 60 percent by weight of this catalyst consists of mixtures of copper and aluminum oxides in the form of spinel and 60 ... 100 percent of copper present is bound to aluminum oxide, spinel, atomic ratio between copper and aluminum, Cu: Al, being 0.25 ... 0.50. The catalyst itself also contains 1-20 weight percent zinc oxide present in the pores of the spinel. Other quantities of zinc oxide may be mechanically mixed or may be present on the surface of the catalyst. The catalyst is used to convert carbon monoxide to steam. The catalyst is prepared by coprecipitation of the copper and aluminum salts at a pH of 6.0-6.5 with an alkaline or ammonium carbonate solution. After filtration and drying of the product, it is calcined at 750 ... 850 degrees C until the structure of the spine is obtained in a proportion of 60 ... 100 percent. The zinc salt is introduced into the spinel pores, and the product thus formed is heated to at least the decomposition temperature of the zinc salt which is then treated in zinc oxide. Additional zinc oxide addition to that introduced into the spinning pores can be performed by mechanical mixing.