In the study described in this paper we deposited gold, silver and copper on γ-Al2O3 as nanoparticles (<4 nm) and investigated the behavior of these nanoparticles in the preferential oxidation of CO in presence of H2. In addition, the effect of addition of CeO x and/or Li2O was investigated. All the three metals show preferential oxidation of CO at low temperatures. The oxides added to Au/γ-Al2O3, Ag/γ-Al2O3 and Cu/γ-Al2O3 improve the catalytic performance of the gold, silver and copper. Interesting and synergistic effects were observed when both the CeO x and Li2O were added. Possible mechanisms are proposed.
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Lippits, M.J., Gluhoi, A.C. & Nieuwenhuys, B.E. A comparative study of the effect of addition of CeO x and Li2O on γ-Al2O3 supported copper, silver and gold catalysts in the preferential oxidation of CO. Top Catal 44, 159–165 (2007). https://doi.org/10.1007/s11244-007-0289-5
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DOI: https://doi.org/10.1007/s11244-007-0289-5