PREPARING A CATALYST CONTAINING A GROUP VIII METAL AND A NON-ACIDIC PROMOTER DISPERSED ON A SUPPORT VIA SIMULTANEOUS IMPREGNATION

摘要

Catalysts containing a Group VIII metal and a non-acidic promoter are prepared by simultaneous impregnation using a first aqueous solution of a chelating ligand such as ethylenediaminetetraacetic acid and a promoter metal salt which is prepared and heated to a temperature of 80.degree.C to its boiling point and then combined with a second aqueous solution containing a Group VIII metal compound. This mixed solution is aged at a temperature of 40 to 100.degree.C and then used to impregnate a support, e.g., alumina spheres. The impregnated support is then dried, calcined and reduced with hydrogen. Prior to reduction the catalyst may optionally be treated with a chlorine or chloride stream.