J. Phys. IV France 123 (2005) 319-322
Sulfided catalysts based on apatite modified by adding zirconium ions: Characterization and catalytical behaviourM. Aït Chaoui1, A. El Ouassouli1, A. Ezzamarty1, M. Lakhdar1, C. Moreau2, J. Leglise3 and A. Travert3
1 Laboratoire de Catalyse Hétérogène, Université Hassan II, Faculté des Sciences Aïn Chock, BP. 366, MAARIF, Casablanca, Maroc
2 Laboratoire de Matériaux Catalytiques et Catalyse en Chimie Organique, UMR CNRS 5618, ENSCM, 8 rue de l'École Normale, 34296 Montpellier Cedex 5, France
3 Laboratoire Catalyse et Spectrochimie, UMR CNRS 6506, ISMRA, 6 Bd. du Maréchal Juin, 14050 Caen Cedex, France
Supports based on apatite and apatite weakly enriched with zirconium phosphate were synthesized. On these supports, NiMo sulfides were transplanted. The NiMo/Apatites catalysts convert selectively the dimethyldisulfide (DMDS) to methanthiol contrary to their counterpart NiMo/Al2O3. Adding low amounts of zirconium ions improves the catalytical activity. The activity improvement is due to the increase of surface area, as well as to the good dispersion of the NiMo sulfide phase.
© EDP Sciences 2005