Contribution of components in Ce-Ti-Cr-Oxcatalysts for selective propane-combustion in the presence of CO

  • Rajagopalan P
  • Stöwe K
  • Maier W
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Abstract

Gas-phase combustion of hydrocarbons and CO in exhaust gases are normally performed competitively by supported noble metals. With the help of high-throughput technologies complex mixed oxides, such as the amorphous porous Ce20Ti50Cr30Oxhave been discovered, which selectively convert propane in the presence of excess of carbon monoxide. These findings are of fundamental importance for heterogeneous catalysis and may have implications on the future development of novel exhaust gas catalysts. In this study the effect of the various elements of the mixed oxide catalysts on activity and selectivity has been investigated and interpreted. The results of attempts to further improve the catalysts by additional doping are presented. © 2010 Elsevier Ltd. All rights reserved.

Author-supplied keywords

  • Exhaust gas cleaning
  • Noble-metal-free catalyst
  • Oxidation catalysis
  • Selective hydrocarbon oxidation
  • Titania-chromia catalyst

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Authors

  • Prasanna Rajagopalan

  • Klaus Stöwe

  • Wilhelm F. Maier

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