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The catalytic activity for CO oxidation over Ag/SBA-15 catalysts prepared by in-situ “pH-adjusting” method is studied in this paper. The prepared silver catalyst (7.8wt%) under pH=5 condition gives 98% of CO oxidation at 70°C, as compared to 140°C with conventional silver catalyst without pH adjusting (6.1wt%). However, more Ag 2 O clusters are formed inside the channels with the further pH...
Ag nanoparticles were incorporated into the channels of mesoporous SBA-15 by the “pH-adjusting” method. In this procedure, the pH value of the solution was adjusted up to 7.5 by adding ammonia. The structural properties of Ag/SBA-15 nanocomposites were systematically investigated by X-ray powder diffraction (XRD), Transmission electron microscope (TEM), N 2 adsorption-desorption isotherms,...
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