Characterization of Mo/C Catalysts by XRD, XPS, and TOF-SIMS

The objective of this work is to undertake a detailed study of the Mo/C system. This will include (a) study of the adsorption of Mo oxyanions from aqueous solutions of ammonium heptamolybdate onto activated carbon and (b) characterization of a series of Mo/C catalysts obtained by the equilibrium absorption method, using X-ray diffraction (XRD), X-ray photoelectron spectroscopy (XPS), and time-of-flight secondary ion mass spectroscopy. The structural information thus obtained will be used to evaluate the Mo speciation proposed earlier. 35 refs., 6 figs., 2 tabs.