Article

Catalysis Letters

, Volume 98, Issue 1, pp 11-15

Synergism Between Pt/Al2O3 and Au/TiO2 in the Low Temperature Oxidation of Propene

  • D.H. KimAffiliated withChemistry and Physics Science Division, Pacific Northwest National Laboratory
  • , M.C. KungAffiliated withDepartment of Chemical and Biological Engineering, Northwestern University
  • , A. KozlovaAffiliated withDepartment of Chemical and Biological Engineering, Northwestern University
  • , S.D. YuanAffiliated withDepartment of Chemical and Biological Engineering, Northwestern University
  • , H.H. KungAffiliated withDepartment of Chemical and Biological Engineering, Northwestern University

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Abstract

CO impedes the low temperature (<170 °C) oxidation of C3H6 on supported Pt. Supported Au catalysts are very effective in the removal of CO by oxidation, although it has little propene oxidation activity under these conditions. Addition of Au/TiO2 to Pt/Al2O3 either as a physical mixture or as a pre-catalyst removes the CO and lowers the light-off temperature (T 50) for C3H6 oxidation compared with Pt catalyst alone by ~54 °C in a feed of 1% CO, 400 ppm C3H6, 14% O2, 2% H2O.

Pt/Al2O3 Au/TiO2 CO oxidation C3H6 oxidation synergism physical mixture