Abstract
A number of copper and vanadium mixed oxides were synthesized using the sol–gel method and their sulfur tolerance was studied in toluene combustion (used as a model reaction) in the presence of SO2. The results revealed that the activity and thio-tolerance ability of Cu–V mixed oxides were significantly related to their compositions. The Cu1V6 sample (1 and 6 are the atomic ratio of copper and vanadium in the mixed oxide) showed the best activity and thio-tolerance ability as compared with the other samples used in the study. The high performance of Cu1V6 sample could be related to the formation of CuV2O6 that restrained the formation of sulfate species, high specific surface area and good reducibility as characterized by XRD, FT-IR, N2-physical adsorption/desorption and H2-TPR.
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