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Title: 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 » metals other than titanium and that of the selected second metal oxide) into the homogeneous metal/titanium oxide catalysts of this invention.« less

Inventors:
 [1];  [2]
  1. (Thornton, CO)
  2. (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) OAK
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. Tue . "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 = {2000},
month = {8}
}

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