Abstract
AbstractThe selective oxidation of hydrogen sulfide to sulfur was studied over iron‐molybdenum oxides with various Fe‐Mo ratios. Strong synergistic phenomenon in catalytic activity was observed for the Fe‐Mo‐O binary oxides. Under identical reaction conditions, the areal rates of the binary oxides were superior to those of the corresponding single oxide catalysts, which suggest that the new compound Fe2(MO4)3 formed in the binary oxide is more active than Fe2O3 and MoO3. The oxidation rates of H2S were found to exhibit first‐order dependence on the hydrogen sulfide concentration, which implies that the activation of H2S is the rate‐limiting step.
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