Abstract
The properties of the Mo-containing samples (6 wt % Mo) prepared by mechanochemical mixing of Fe, Co, or Ni heteropolymolybdates of Andersen type and the TiO2 support are reported. A detailed characterization of the surface properties has been performed by BET scanning electron microscopy, IR, XPS and thermo programmed reaction methods and by testing of catalysts in the thiophene conversion. The effects of the mixing time and the nature of heteroatom on the properties of the samples are shown. The nanosized particles are formed when mechanochemical synthesis is running 30 min. The Ni-containing catalyst reveals the highest and the most stable activity compared to Co- and Fe-containing catalysts. Their hydrodesulphurization activity is compared to those of alumina and titania catalysts synthesized by the conventional impregnation method.
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