Study of NiMo/ZrO2 catalysts for hydrodesulfurization

M. Jia , P. Afanasiev (1) , M. Vrinat (1) , W. Li , H. Xu , Q. Ge

1 IRC - Institut de recherches sur la catalyse

Several hydrodesulfurization catalysts, NiMo/ZrO2 (550), NiMo/ZrO2 (650) and NiMo/ZrO2 (550)-1, were prepd. by co-impregnation, with or without calcinations, followed by sulfidation, to study influences of support types and prepn. conditions on their catalytic activities. Thiophene hydrodesulfurization (HDS) was taken as probe reaction to investigate catalyst performance. The reaction was carried out in a continuous flow microreactor system. Catalysts were characterized by Raman and XPS spectrum. Catalyst NiMo/ZrO2 (650) showed higher activity than NiMo/ZrO2 (550). The ZrO2 support of former was in tetragonal phase while the latter amorphous. In case of NiMo/ZrO2 (550)-1 strong interaction between support and active constituent existed induced by high calcination temp. The above interaction consequently decreased n (S):n(Ni + Mo) of catalyst and resulted lower catalytic activity.

Domaines: Catalyse

M. Jia, P. Afanasiev, M. Vrinat, W. Li, H. Xu, et al.. Study of NiMo/ZrO2 catalysts for hydrodesulfurization. Shiyou Huagong, 2005, 34 (3), pp.218-221. ⟨hal-00012535⟩