Hamada, BoudjemaBoukoberine, Yamina2015-04-262015-04-2620111878-5352https://dspace.univ-boumerdes.dz/handle/123456789/620CoMo/c-Al2O3-CuY catalysts are prepared by physically mixing CoMo/c-Al2O3 catalyst with Cu-exchanged Y zeolite. The CuY zeolite is prepared by the solid state ion exchange technique. The thiophene hydrodesulfurization is performed in a fixed bed reactor at high temperature and atmospheric pressure. The results show that the presence of CuY zeolite particles in CoMo/ Al2O3 catalyst can have a noticeable effect on both the conversion and product selectivities. An increasing zeolite loading in catalyst results in a decrease of the thiophene HDS activity. This decrease is probably caused by the formation of heavy compounds and the deactivation of the zeolite at high temperaturesenCuY zeoliteCoMo/c-Al2O3 catalystThiopheneHydrodesulfurizationArticle