CATALYSTS BASED ON COPPER, ZINC AND ALUMINUM OXIDES, THEIR PREPARATION AND THEIR USE IN THE SYNTHESIS OF METHANOL

摘要

PROCESS FOR THE PREPARATION OF A CATALYST CONTAINING COPPER, ZINC AND ALUMINUM OXIDES AND, ACCESORIALLY, A BORON OXIDE. /P P THIS PROCESS INCLUDES THE FOLLOWING STEPS: AA FROM AN AQUEOUS SOLUTION D 'A HYDROSOLUBLE COPPER SALT, WHICH MAY CONTAIN A COMPOUND OF WATER SOLUBLE BORON, IS PRECIPITATED, USING AMMONIUM CARBONATE OR HYDROGENO-CARBONATE AS PRECIPITANT, AS A BODY COMPONENT, BORON COMPONENT IF THERE IS A BORON COMPOUND; BASED ON AN AQUEOUS SOLUTION OF A WATER-SOLUBLE ZINC SALT, WHICH MAY CONTAIN A WATER-SOLUBLE BORON COMPOUND, AN ALKALINE COMPONENT IS PRECIPITATED BY USING AN ALKALINE METAL HYDROXIDE AS A BODY COMPONENT. IF THERE IS A BORON COMPOUND; AND C. CALCINE, IN THE PRESENCE OF AN ALUMINA PRECURSOR, A MIXTURE OF THE PRECIPITES OBTAINED IN STEPS A AND B. /P P THIS CATALYST MAY BE USED TO SYNTHESIZE METHANOL FROM A MIXED GAS CONTAINING CARBON MONOXIDE AND / OR CARBON DIOXIDE AND HYDROGEN.