ABSTRACT
A program was undertaken at United Catalyst Inc. (UCI) to study the effect that various preparation techniques have on hydrotreating catalystactivity and performance. The initial phase of this study involved the preparation of cobalt and molybdenum oxides on an extruded alumina support that is currently used for one of UCI's commercial hydrotreating catalyst. The cobalt oxide/molybdenum oxide catalysts were prepared by impregnation of a carrier material with various salts of cobalt and molybdenum. The cobalt and molybdenum oxides were applied to the carrier by impregnation with aqueous solutions of soluble salts of cobalt and molybdenum by complete submersion of the carrier in the metal salt solution. In addition to these bulk properties, which frequently do not correlate with the activity of the catalysts, surface properties were determined by ESCA, TEM, and SEM.
