Korean Journal of Chemical Engineering, Vol.21, No.1, 104-109, January, 2004
Selective Oxidation of H2S to Ammonium Thiosulfate and Elemental Sulfur Using Mixtures of V-Bi-O and Sb2O4
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The selective oxidation of hydrogen sulfide in the presence of excess water and ammonia was investigated by using vanadium-bismuth based mixed oxide catalysts. Synergistic effect on catalytic activity was observed for the mechanical mixtures of V-Bi-O and Sb2O4. Temperature programmed oxidation (TPO), X-ray photoelectron spectroscopy (XPS), and two separated bed reactivity test results supported the role of Sb2O4 for reoxidizing the reduced VBi-O during the reaction.
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