Catalysts for the selective oxidation of hydrogen sulfide to...

Details Catalysts for the selective oxidation of hydrogen sulfide to... Catalysts for the selective oxidation of hydrogen sulfide to...

B - Operations, Transporting

01

D

B01D 53/52 (2006.01) B01D 53/86 (2006.01) B01J 21/06 (2006.01) B01J 23/00 (2006.01) C01B 17/04 (2006.01)

Patent

CA 2318734

This invention provides catalysts for the oxidation of hydrogen sulfide. In particular, the invention provides catalysts for the partial oxidation of hydrogen sulfide to elemental sulfur and water. The catalytically active component of the catalyst comprises a mixture of metal oxides containing titanium oxide and one or more metal oxides which can be selected from the group of metal oxides or mixtures of metal oxides of transition metals or lanthanide metals. Preferred metal oxides for combination with TiO2 in the catalysts of this invention include oxides of V, Cr, Mn, Fe, Co, Ni, Cu, Nb, Mo, Tc, Ru, Rh, Hf, Ta, W, Au, La, Ce, Pr, Nd, Pm, Sm, Eu, Gd, Tb, Dy, Ho, Er, Tm, Yb and Lu. Catalysts which comprise a homogeneous mixture of titanium oxide and niobium (Nb) oxide are most preferred.

Cette invention concerne des catalyseurs pour l'oxydation sélective de l'acide sulfhydrique, en particulier pour l'oxydation partielle d'acide sulfhydrique en soufre élémentaire et eau. La composante catalytiquement active du catalyseur comprend un mélange d'oxydes métalliques, dont de l'oxyde de titane et un ou plusieurs oxydes métalliques qui peuvent être choisis dans le groupe d'oxydes métalliques ou de mélanges d'oxydes métalliques de métaux de transition ou de métaux lanthanides. Les oxydes métalliques préférés à utiliser en combinaison avec TiO2 dans les catalyseurs selon l'invention comprennent des oxydes de V, Cr, Mn, Fe, Co, Ni, Cu, Nb, Mo, Tc, Ru, Rh, Hf, Ta, W, Au, La, Ce, Pr, Nd, Pm, Sm, Eu, Gd, Tb, Dy, Ho, Er, Tm, Yb et Lu. Les catalyseurs préférés sont ceux qui comprennent un mélange homogène d'oxyde de titane et d'oxyde de niobium (Nb).

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