Catalytic hydrotreatment on alumina-titania supported NiMo sulphides

MoNi/Al2O3 catalysts have been widely used for hydrodesulphurisation of oil fractions. In order to enhance the catalytic activities for HDS and HDN, c atalysts supported on titania-modified alumina carriers have been studied. The MoNi/Al2O3-TiO2 catalysts were characterised by benzene sorption, ammon ia sorption, temperature programmed reduction, X-ray diffraction and scanni ng electron microscopy. The supports effect was examined by comparing thiop hene conversion and sulphur or nitrogen contents in diesel oil fraction. (C ) 2001 Elsevier Science B.V. All rights reserved.