| Summary: | 碩士 === 國立臺灣科技大學 === 工程技術研究所 === 98 === 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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