Catalysts for the selective oxidation of hydrogen sulfide to sul

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

1999-01-20

2000-08-08

Griffin, Steven P.

Chemistry of inorganic compounds

Sulfur or compound thereof

Elemental sulfur

4235768, 4232421, 42324406, 502514, C01B 1704, B01D 5352

Patent

active

060998199

ABSTRACT:
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 TiO.sub.2 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 also provided. A preferred method for preparing the precursor homogenous mixture of metal hydroxides is by coprecipitation of titanium hydroxide with one or more other selected metal hydroxides. Catalysts of this invention have improved activity and/or selectivity for elemental sulfur production. Further improvements of activity and/or selectivity can be obtained by introducing relatively low amounts (up to about 5 mol %)of a promoter metal oxide (preferably of metals other than titanium and that of the selected second metal oxide) into the homogeneous metal/titanium oxide catalysts of this invention.

REFERENCES:
patent: 3880986 (1975-04-01), Beavon
patent: 4002720 (1977-01-01), Wheelock et al.
patent: 4088743 (1978-05-01), Hass et al.
patent: 4169136 (1979-09-01), Hass et al.
patent: 4196101 (1980-04-01), Wilson et al.
patent: 4197277 (1980-04-01), Sugier et al.
patent: 4243647 (1981-01-01), Hass et al.
patent: 4246141 (1981-01-01), Hass et al.
patent: 4279882 (1981-07-01), Beavon
patent: 4311683 (1982-01-01), Hass et al.
patent: 4314983 (1982-02-01), Hass et al.
patent: 4406873 (1983-09-01), Beavon
patent: 4432961 (1984-02-01), Hass et al.
patent: 4439412 (1984-03-01), Behie et al.
patent: 4444741 (1984-04-01), Hass et al.
patent: 4444742 (1984-04-01), Hass et al.
patent: 4444908 (1984-04-01), Hass et al.
patent: 4508699 (1985-04-01), Schoofs
patent: 4519992 (1985-05-01), Alkhazov et al.
patent: 4528277 (1985-07-01), Hass et al.
patent: 4552746 (1985-11-01), Kettner et al.
patent: 4623533 (1986-11-01), Broecker et al.
patent: 4640908 (1987-02-01), Dupin
patent: 4818740 (1989-04-01), Berben et al.
patent: 4857297 (1989-08-01), Kettner et al.
patent: 4886649 (1989-12-01), Ismagilov et al.
patent: 4937058 (1990-06-01), Dupin et al.
patent: 4982003 (1991-01-01), Hara et al.
patent: 5037629 (1991-08-01), Berben et al.
patent: 5176896 (1993-01-01), Bela
patent: 5256384 (1993-10-01), Rolke et al.
patent: 5286697 (1994-02-01), van den Brink et al.
patent: 5352422 (1994-10-01), van den Brink et al.
patent: 5397556 (1995-03-01), Towler et al.
patent: 5466427 (1995-11-01), Rumpf et al.
patent: 5480636 (1996-01-01), Maruo et al.
patent: 5512258 (1996-04-01), Bouyanov et al.
patent: 5512260 (1996-04-01), Kiliany et al.
patent: 5547649 (1996-08-01), Beck et al.
patent: 5597546 (1997-01-01), Li et al.
Hutchings, G.J. (May 1992) "Catalysis and Environment," Applied Catalysis A: General 84(2): pp.
Chowdhury, A.I. and Tollefson, E.L. (Jun. 1990), "Catalyst Modification and Process Design Consideration for the Oxidation of Low concentrations of Hydrogen Sulfide in Natural Gas," Can. J. Chem. Eng. 68:449-454.
Dalai, A.K. et al. (Feb. 1993), "The Effects of Pressure and Temperature on the Catalytic Oxidation of Hydrogen Sulfide in natural Gas and Regeneration of the Catalyst to Recover the Sulfur Produced," Can. J. Chem. Eng. 71:75-82.
Ghosh, T.K. and Tollefson, E.L. (Dec. 1986), "A Continuous Process for Recovery of Sulfur from Natural Gas Containing Low Concentrations of Hydrogen Sulfide," Can J. Chem. Eng. 64:960-968.
Goar, B.G. et al. (May-Jun. 1992), "Superclaus: performance world-wide ," Sulphur, No. 22:44-47.

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