Catalysts for the selective oxidation of hydrogen sulfide to sulfur
- Thornton, CO
- Baton Rouge, LA
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.
- Research Organization:
- TDA Research, Inc. (Wheat Ridge, CO)
- DOE Contract Number:
- FG03-95ER82088
- Assignee:
- TDA Research, Inc. (Wheat Ridge, CO)
- Patent Number(s):
- US 6099819
- Application Number:
- 09/2343367
- OSTI ID:
- 873136
- Country of Publication:
- United States
- Language:
- English
Catalyst modification and process design considerations for the oxidation of low concentrations of hydrogen sulfide in natural gas
|
journal | June 1990 |
Alkane oxidation using iron oxo centres
|
journal | May 1992 |
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
|
journal | February 1993 |
A continuous process for recovery of sulfur from natural gas containing low concentrations of hydrogen sulfide
|
journal | December 1986 |
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Related Subjects
selective
oxidation
hydrogen
sulfide
sulfur
provides
particular
partial
elemental
water
catalytically
active
component
catalyst
comprises
mixture
metal
oxides
containing
titanium
oxide
selected
mixtures
transition
metals
lanthanide
preferred
combination
mn
cu
nb
tc
ru
hf
eu
gd
tb
tm
comprise
homogeneous
niobium
provided
method
preparing
precursor
homogenous
hydroxides
coprecipitation
hydroxide
improved
activity
selectivity
production
improvements
obtained
introducing
relatively
amounts
mol
promoter
preferably
selected metal
preferred metal
oxide catalyst
catalyst comprises
metal hydroxides
preferred method
partial oxidation
elemental sulfur
transition metals
metal oxide
transition metal
hydrogen sulfide
metal oxides
titanium oxide
catalytically active
metal hydroxide
homogeneous mixture
promoter metal
lanthanide metals
oxides containing
oxide catalysts
provides catalysts
containing titanium
homogenous mixture
sulfur product
improved activity
active component
lanthanide metal
/423/502/