本研究是利用具有氧化還原特性的CeO2，使用初濕含浸法負載於具有良好熱穩定性的SiO2，再與均相沉澱法製備之CeO2(HSA)作為比較。對乙醇在SiO2及CeO2(HSA)為擔體的觸媒上之吸附及轉化現象進行研究，可進一步地了解乙醇之重組反應。利用X光粉末繞射分析、氮氣物理吸附、溫度程序控制還原、乙醇脈衝吸附、溫度程序控制脫附、乙醇脈衝反應、質譜分析儀，分別對擔體觸媒進行鑑定及測試。
藉由Cu金屬之負載可使CeO2(HSA)擁有更高的乙醇吸附量。而溫程脫附過程中，Cu金屬的參與可促進觸媒表面所吸附之物種進行分解，藉此加速反應進行的流程。於乙醇脈衝反應中，Cu金屬的負載可促進乙醇轉化之能力，並使觸媒有利於較低的溫度下進行反應。

This research aims to study the absorption and conversion of ethanol on catalyst supported on SiO2- and CeO2- in order to understand ethanol reforming reaction. The CeO2 was loaded on the SiO2 via incipient wetness impregnation, and its properties was compared with the CeO2 prepared by homogeneous precipitation method. The catalysts were characterized and examined by N2 physisorption, X-ray powder diffraction, temperature programmed reduction, ethanol pulse chemisorption, temperature programmed desorption and ethanol pulse reaction.
Higher ethanol absorption of CeO2(HSA) was achieved by loading 0.2wt% Cu. During the process of temperature programmed reduction, the incorporation of the Cu promoted the decomposition of the surface species of catalyst. The loading of Cu also enhanced the ethanol conversion as indicated in the ethanol pulse chemisorption experiments suggesting that the catalyst system is feasible to operate with lower temperature.

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