Abstract
Zeolites NaY, HUSY and KL were ion-exchanged with a cationic molybdenum sulfide cluster [Mo 3S 4(H 2O) 9] 4+ with incomplete cubane-type structure and a cationic nickel-molybdenum mixed sulfide cluster [Mo 3NiS 4Cl(H 2O) 9] 3+ with complete cubane-type structure. The UV-visible spectra and EXAFS analysis data exhibited that the structure of the molybdenum cluster was maintained after ion exchange. These zeolite catalysts showed activity for benzothiophene hydrodesulfurization; especially, involvement of Ni resulted in great enhancement of the hydrodesulfurization activity.
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