本篇論文中，我們將有系統的研究十種金屬，(分別是 Ru 、 Rh 、 Ir 、 Co、Ni 、 Pd 、Pt 、 Cu 、 Au 和 Ag )，並將十種不同金屬分別附著在兩種不同金屬氧化支撐上，來進行氧化乙醇蒸氣重組反應，而這兩種氧化支撐物分別為，氧化鈰 (CeO2)，和參雜了Dy的鈣鈦礦結構(Dy-doped BaZrO3)。在各種不同外在條件，如不同氧氣量的條件下(此篇氧氣量改變從0~40 sccm)、不同的溫度(此篇500℃~600℃)來進行實驗。這些使我們能夠了解整個乙醇蒸氣重組反應中，不同催化劑的性能以及它們對反應中所帶來的影響。在催化劑中金屬的部分，我們發現Rh、Ru、Ir這三種金屬，有助於C-C鍵斷裂，故產生最高的CO+CO2選擇率，並且有著最高的氫氣產率。 在催化劑中支撐物的部分，我們選擇了CeO2和鈣鈦礦結構(Dy-doped BaZrO3)，這兩種支撐物可以分別有效的利用環境中氧氣與水，促使整個催化劑的效能提升。而其中鈣鈦礦結構(Dy-doped BaZrO3)效能提升特別明顯，是因為鈣鈦礦結構可以有效利用水，促使催化劑效能提升，所以可以看出水在乙醇蒸氣重組反應中具有重要的影響。在外在環境條件部分，我們發現增加溫度與氧氣含量，可以有效提升乙醇轉換效率、CO和CO2、氫氣產率。

In this thesis, we systematically examine the examine the oxidative steam reforming of ethanol (OSRE) on 10 metals (Ru、Rh、Ir、Co、Ni、Pd、Pt、Cu、Au and Ag) supported on two oxide (CeO2、Dy-doped BaZrO3) at various operational conditions with different O2 flows (0 ~ 40 sccm) and temperatures (500℃~600℃) to elucidate the effects from catalysts and reagents on the catalytic performance. For metallic catalysts, we found that Rh, Ru, and Ir will improve C-C bond cleavage and produce mainly CO and CO2 with the highest hydrogen yield. For oxide supporters, both CeO2 and Dy-doped BaZrO3 that have high reactivity with oxygen and water, respectively, can further improve the catalytic performance. Especially, Dy-doped BaZrO3 shows the best enhancement, indicating that water plays an more important role in OSRE. For operational condition, we found that at high temperatures and oxygen contains can both improve ethanol conversion, CO and CO2 formation, and, eventually, raise the hydrogen yield.

Key word : steam reforming

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Key word : steam reforming