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In this work four supports with different textural properties (Al2O3, SiO2, NaY and TiO2) are used to evaluate the formation of different silver species and their effect on the NH3-SCO performance. Characterization analyses have shown that the predominant Ag0 species and the oxidized Ag species (Ag+ and Agnδ+) are located on the four catalysts with different ratio of Ag0/oxidized Ag. Small Ag0 particle...