Preface. Keynote Lectures. Hydrocracking in the year 2000: a strong interaction between technology development and market requirements (J.K. Minderhoud et al.). Life cycle of hydroprocessing catalysts and total catalyst management (S. Eijsbouts). Hydrogen spillover and hydrocracking, hydroisomerization (K. Fujimoto). Conversion of model sulfur compounds to characterize hydrodesulfurization CoMo/Al2O catalysts (J. Leglise et al.).
The Catalyst Under Working Conditions. Highly active MoS2-based dispersed catalyst with a novel morphology (Y. Araki et al.). Use of noble metals in hydrodeoxygenation reactions (A. Centeno et al.). Influence of the hydrogen sulfide partial pressure on the hydrodeoxygenation reactions over sulfided CoMo/carbon catalysts (M. Ferrari et al.). Performance of noble metal-Mo/&ggr;-Al2O3 catalysts: effect of preparation parameters (M.H. Pinzón et al.). Use of ammonium tetrathiomolybdate as a new precursor for the preparation of hydrodesulfurization catalysts by a sol-gel method (L. Le Bihan et al.). Influence of sulphidation and fluoridation on the HDN of o-toluidine over tungsten catalysts ex ammonium tetrathiotungstate (M. Sun, R. Prins). Modeling molybdenum carbide-based hydrodesulfurization (HDS) catalysts using carbon-modified Mo(110) surfaces (C.L. Roe, K.H. Schulz). TiO2-coated on Al2O3 support prepared by CVD method for HDS catalysts (K. Segawa, S. Satoh). Sulfur uptake, exchange and HDS activity of NiMoOx/Al2O3 catalysts (T. Koltai et al.). Stability of CoMo/Al2O3 catalysts: effect of HDO cycles on HDS (T.-R. Viljava et al.). CoMo/Al2O3 and CoMo/TiO2-Al2O3 catalysts in
The 2nd International Symposium on Hydrotreatment and Hydrocracking of Oil Fractions, which is also the 7th in the series of European Workshops on Hydrotreatment, took place in Antwerpen, Belgium from November 14 to 17.
The Symposium emphasized how oil refining faces increasingly severe environmental regulations. These and the increasing application of heavier crudes containing more S-, N- and metal components call for more efficient hydrotreatment and hydrocracking processes. It is clear from the keynote lectures, the oral contributions and the posters of this meeting that adapting the operating conditions will not suffice. Adequate catalysts need to be developed, with different composition and structure. Surface science techniques and molecular modeling are now well established tools for such a development. They should be of help in widely different aspects, like the role of precursors in the preparation or the modifications undergone by the catalyst under reaction conditions.
The improvement of hydrotreatment and hydrocracking also needs accurate modeling of the chemical reactor. This requires more representative hydrodynamics and kinetic models whose validity extends to the very low S- and N-contents. These areas should be vigorously developed.
For industrial practitioners, industrial researchers and scientists in the area of hydrotreatment.
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- © Elsevier Science 1999
- 3rd November 1999
- Elsevier Science
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Université Catholique de Louvain, Louvain-la-Neuve, Belgium
Laboratorium voor Petrochemische Techniek, Universiteit Gent, Ghent, Belgium