... trioxide, molybdenum powder, molybdenum products, in hydrotreating catalyst, desulfurization catalyst for oil refinement and in fertilizer catalyst etc.3 Ammonium Dimolybdate(ADM) (NH4)2Mo2O7 ... molybdenum originals, also widely used in hydrotreating catalyst, desulfurization catalyst for oil refinement and in fertilizer catalyst etc.4 Ammonium Heptamolybdate(AHM) (NH4)6Mo7O24 ...