Effect of H2S on pyridine HDN over Ir, Mo and Ir-Mo/Al2O3 sulfide catalysts

Research paper by Zdeněk Vít, Josef Cinibulk

Indexed on: 01 Sep '02Published on: 01 Sep '02Published in: Reaction Kinetics and Catalysis Letters


The effect of H2S on hydrodenitrogenation (HDN) of pyridine over alumina supported Mo, Ir and mixed Ir-Mo sulfide catalysts was studied. The pyridine hydrogenation was inhibited by H2S on all catalysts, while the cleavage of the C-N bond of intermediate piperidine was facilitated on the Mo and inhibited on the Ir and Ir-Mo catalysts. The promotional offect between Ir and Mo was observed in the piperidine cleavage both in the presence and absence of H2S.