Catalysts for the selective oxidation of hydrogen sulfide to sulfur
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 ofmore »
- Inventors:
-
- Thornton, CO
- Baton Rouge, LA
- Issue Date:
- Research Org.:
- TDA Research, Inc. (Wheat Ridge, CO)
- OSTI Identifier:
- 873136
- Patent Number(s):
- 6099819
- Application Number:
- 09/2343367
- Assignee:
- TDA Research, Inc. (Wheat Ridge, CO)
- Patent Classifications (CPCs):
-
B - PERFORMING OPERATIONS B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL B01D - SEPARATION
B - PERFORMING OPERATIONS B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL B01J - CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY
- DOE Contract Number:
- FG03-95ER82088
- Resource Type:
- Patent
- Country of Publication:
- United States
- Language:
- English
- Subject:
- catalysts; 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/
Citation Formats
Srinivas, Girish, and Bai, Chuansheng. Catalysts for the selective oxidation of hydrogen sulfide to sulfur. United States: N. p., 2000.
Web.
Srinivas, Girish, & Bai, Chuansheng. Catalysts for the selective oxidation of hydrogen sulfide to sulfur. United States.
Srinivas, Girish, and Bai, Chuansheng. Sat .
"Catalysts for the selective oxidation of hydrogen sulfide to sulfur". United States. https://www.osti.gov/servlets/purl/873136.
@article{osti_873136,
title = {Catalysts for the selective oxidation of hydrogen sulfide to sulfur},
author = {Srinivas, Girish and Bai, Chuansheng},
abstractNote = {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.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {Sat Jan 01 00:00:00 EST 2000},
month = {Sat Jan 01 00:00:00 EST 2000}
}
Works referenced in this record:
Catalyst modification and process design considerations for the oxidation of low concentrations of hydrogen sulfide in natural gas
journal, June 1990
- Chowdhury, A. I.; Tollefson, Eric L.
- The Canadian Journal of Chemical Engineering, Vol. 68, Issue 3
Alkane oxidation using iron oxo centres
journal, May 1992
- Hutchings, G. J.
- Applied Catalysis A: General, Vol. 84, Issue 2
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
- Dalai, Ajay K.; Majumdar, Amitabha; Chowdhury, Aminul
- The Canadian Journal of Chemical Engineering, Vol. 71, Issue 1
A continuous process for recovery of sulfur from natural gas containing low concentrations of hydrogen sulfide
journal, December 1986
- Ghosh, Tushar K.; Tollefson, Eric L.
- The Canadian Journal of Chemical Engineering, Vol. 64, Issue 6