Foreword. Preface. Organizing Committees. Acknowledgements. Plenary Lectures. Control of Catalyst Performance in Selective Oxidation of Light Hydrocarbons: Catalyst Design and Operational Conditions (B. Delmon et al.). Vanadium Resistant Fluid Cracking Catalysts (M.L. Occelli). Metal Clusters in Zeolites: Nearly Molecular Catalysts for Hydrocarbon Conversion (B.C. Gates). Catalyst Deactivation (D.L. Trimm). Preparation and Catalysis of Highly Dispersed Metal Sulfide Catalysts for Hydrodesulfurization (Y. Okamoto). New Developments in Olefin Polymerization with Metallocene Catalysts (W. Kaminsky, A. Duch). Sessions. Hydroprocessing of Petroleum Residues and Distillates (20 papers). Fluid Catalytic Cracking (6 papers). Oxidation Catalysis (7 papers). Aromatization and Polymerization Catalysis (9 papers). Catalyst Characterization and Performance (6 papers). List of participants. Author Index.