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Gold-Supported Catalysts for Medium Temperature-Water Gas Shift Reaction

Abstract

Water gas shift (WGS) reaction can lead to a reduction of the CO content in the H2-rich gas derived from HCs reforming to about 0.5–1%. Au-based catalysts supported on CeO2 and CeO2-based mixed oxides were prepared, characterized and tested for a potential application in a medium temperature WGS stage. In particular, catalytic activity tests performed with a realistic reformate stream (40% H2, 20% H2O, 11% CO2, 5% CO in He) showed how a 3% Au catalyst supported on CeO2 + ZrO2 reached equilibrium conditions at about 400 °C at WSV = 0.333 NL min−1 g cat −1 .

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Acknowledgements

Institute CNR-IMM “Consiglio Nazionale delle Ricerche—Istituto per la Microelettronica e Microsistemi” (Catania, Italy) is gratefully acknowledged for the support in HRTEM analysis.

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Correspondence to C. Galletti.

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Galletti, C., Specchia, S., Saracco, G. et al. Gold-Supported Catalysts for Medium Temperature-Water Gas Shift Reaction. Top Catal 52, 688–692 (2009). https://doi.org/10.1007/s11244-009-9213-5

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Keywords

  • Hydrogen clean-up
  • Medium temperature-water gas shift reaction
  • Gold catalysts
  • CeO2/CeO2 + Al2O3/CeO2 + ZrO2 carriers