Clean Technology, Vol.19, No.2, 128-133, June, 2013
다양한 방법으로 제조된 CuO/CeO2 촉매에서의 벤젠의 연소반응
Complete Combustion of Benzene over CuO/CeO2 Catalysts Prepared by Various Methods
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초록
CeO2에 담지된 구리산화물에서 벤젠의 촉매연소 반응에 대해 연구하였다. 담지된 구리산화물 촉매들은 볼밀법과 함침법으로 제조하였고, XRD, FT-IR, TEM 및 TPR에 의해 특성분석을 하였다. 볼밀법으로 제조된 CuO/CeO2 촉매는 높은 담지량에서도 잘 분산된 CuO를 얻었다. 볼밀법으로 제조된 CuO/CeO2 촉매는 함침법으로 제조된 촉매에 비해 높은 활성을 보여주었다. CuO의 담지량이 증가할수록 촉매 활성이 증가하였으며, 10 wt%로 담지된 촉매에서 가장 높은 활성을 나타내었다. 또한, 10 wt% CuO/CeO2 촉매에 소량의 Fe2O3와 CoO의 조촉매 첨가는 CuO의 분산도를 높여 반응활성을 증가시켰다.
Catalytic combustion of benzene over CeO2-supported copper oxides has been investigated. The supported copper oxides catalysts were prepared using ball mill method and characterized by XRD, FT-IR, TEM and TPR. In the CuO/CeO2 catalysts prepared using ball mill method, highly dispersed copper oxide species were shown at high loading ratio. The CuO/CeO2 prepared using ball mill method showed the higher activity than those prepared using impregnation method. The catalytic activity increased with an increase in the CuO loading ratio, 10 wt% loaded CuO/CeO2 catalyst giving the highest activity. In addition, the promoting of 10 wt% loaded CuO/CeO2 catalyst with Fe2O3 and CoO enhanced the dispersion of CuO and then increased the
catalytic activity.
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