| 초록 |
In this study, copper oxide nano catalysts were prepared on the γ-Al2O3 support and its nitric oxide (NO) reduction performance was evaluated. The catalyst was prepared by co-precipitation methodology with a variety of morphology such as spherical, rod, plate, nut and cube. Polyethylene glycol (PEG) was used as a surfactant and the morphology was achieved by adopting various synthesis routes. The prepared catalysts were characterized by using FE-SEM, TEM, XPS, FTIR and XRD. The FTIR spectroscopy exhibited the functional groups found with CuO and the XPS spectra showed the oxide states. The prepared catalysts exhibited ＜100 nm in at least one of its external dimension. The XRD spectra of the catalysts were confirmed by its prominent diffraction peaks. The prepared catalysts were tested for their shape dependent NO reduction experiments in the presence of n-heptane as a hydrocarbon source. It was found that spherical and nanonut particles exhibited similar activity but rod catalysts showed slightly higher performance at every experimental temperature. |
