Abstract
The structural investigation of CoO–MoO 3/ γ-Al 2O 3 HDS catalystassumed to accelerate aging in laboratory conditions followed by the DRS method pointed out the surface spinel formation The amount of spinel structure formed increased with increasing temperature and decreased with the treatment atmosphere in the order: nitrogen>air>steam On the basis of the experimental data of electronic d–d transitions of Co (II) ion in a catalyst treated in nitrogen atmosphere the parameter of the crystal-field splitting 10 D q and the energies of the electronic state of Co (II) in a spinel-type structure were calculated The most probable scheme of the molecular orbital has been proposed.
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