Abstract
The selective oxidation of hydrogen sulfide in the presence of excess water and ammonia was studied over V-Sb-O/TiO 2 catalyst. They showed very high conversion of H 2S without any harmful emission of SO 2. The investigation was focused to understand the roles of several oxides. Therefore, V 2O 5/SiO 2, V 2O 5/TiO 2, the mechanical mixture catalyst (V 2O 5+Sb 2O 4) and V-Sb-O/TiO 2 are studied separately. TiO 2 support increased the activity and stability of V 2O 5. Sb 2O 4 increased the reoxidation of reduced V 2O 5 by supplying spillover oxygen through the boundaries of the metal oxides. VSbO 4 was one of the main active phase in V-Sb-O/TiO 2 mixed oxides.
Published Version
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