Plenary Lectures and Invited Papers. Mechanistic relationships between homogeneous and heterogeneous catalysis: Some concepts arising from surface organometallic chemistry (J.M. Basset, J.P. Candy, A. Choplin, P. Dufour, P. Louessard, C. Santini). Selective hydrodechlorination of polychloranilines and polychlorophenols. Access to 3 or 3,5 chloraniline or chlorophenol (G. Cordier). Valorization of fats and oils by hydrogenation and related reactions (E. Ucciani). Zeolites and fine chemicals (H. van Bekkum, H.W. Kouwenhoven). The utility of ion exchange resins as heterogeneous catalysts in chemical syntheses (A. Mitschker, R. Wagner, P.M. Lange). Functionalization of benzene by its reaction with nitrogen oxides over solid-acid catalysts (Y. Ono, K. Tohmori, S. Suzuki, K. Nakashiro, E. Suzuki). New aspects in the performance of heterogeneous catalysts for intermediates and fine chemicals (W.F. Hölderich). Heterogeneous catalysis in mercaptan industrial synthesis (C. Forquy, E. Arretz). Metal-catalyzed oxidations of unsaturated hydrocarbons by molecular oxygen. The use of multi-step catalysis (J.-E. Bäckvall). 35 Research Papers. Author Index. Subject Index.