Abstract
TG, FTIR-(CO absorption), and catalytic activity in the NO reduction by CO were used to characterize Cu/Al2O3-TiO2 catalysts prepared by co-gelling aluminum tri-sec-butoxide and titanium iso-propoxide at pH 9 and at pH 3 gelling conditions. Under nitrogen flow, copper oxide decomposition, oxygen storage capacity (OSC) and sample dehydroxylation (total mass loss) was followed by TG. The CuO decomposition forming Cu0, Cu+1 was observed by means of FTIR (CO absorption) spectra. In pH 9 sample the large amount of Cu0 was observed. At low total mass loss and high Cu0/Cu+1+Cu+2 ratio (pH 9 sample) a lowest light-off in the NO reduction by CO was observed.
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Morán-Pineda, M., Castillo, S., Asomoza, M. et al. Copper oxide on Cu/Al2O3-TiO2 catalystsTG, FTIR-CO absorption and catalytic activity in the NO reduction by CO. Journal of Thermal Analysis and Calorimetry 73, 341–346 (2003). https://doi.org/10.1023/A:1025174617195
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DOI: https://doi.org/10.1023/A:1025174617195