TheMoS2catalystswerepreparedfromvariousmolybdateprecursorsincludinginorganicandorganicmolybdatecompounds.ThesulfidationdegreeandmorphologyofactivephasesofMoS2activatedbyvariousmolybdateprecursorsinH2S/H2streamatdifferenttemperatureswerestudiedbyX-rayphotoelectronspectroscopy(XPS)andhigh-resolutiontransmissionelectronmicroscopy(HRTEM).TheorganicmolybdateprecursorsleadtoMoS2catalystswithhighersulfidationdegreeandsmalleractivephasestodemonstratehighercatalyticactivityduringhydrodesulfurizaiton(HDS)of4,6-DMDBT.