Collect. Czech. Chem. Commun. 1983, 48, 691-697

Effect of the pretreatment conditions on the activity of an industrial Co-Mo/Al2O3 catalyst

Lachezar Petrova, Chavdar Vladova, Dimitar Shopova, Věnceslava Friebováb and Ludvík Beránekb

a Institute of Organic Chemistry, Bulgarian Academy of Sciences, 1113 Sofia, Bulgaria
b Institute of Chemical Process Fundamentals, Czechoslovak Academy of Sciences, 165 02 Prague 6-Suchdol


The processes of reduction and sulphidation of an industrial Co-Mo/Al2O3 catalyst have been studied by means of gravimetric and kinetic methods at atmospheric pressure. The effect of the pretreatment temperature on the catalytic activity for ethylene hydrogenation and thiophene hydrodesulphurization has been studied. Two types of active centres, for hydrogenation and for hydrodesulphurization, have been characterized on the basis of their different properties.