Abstract
The effects of Na+ ions on the physicochemical properties and catalytic activity of CoMo/γ-Al2O3 hydrodesulfurization catalysts prepared by inverse impregnation has been studied. The catalytic activity was found to be almost independent of the priority of impregnation, it is correlated with the distribution of promoter species in the oxidic precursors as well as with the selectivity of the catalysts. The Na doping of the support brings about a progressive decrease in the catalytic activity due to the partial scavenging of MoVI by Na+ to form Na2MoO4.
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