摘要
本篇研究為使用導氧離子材料La0.6Sr0.4Co0.2Fe0.8O3及Gd0.2DCe0.8為擔體，擔載不同的活性金屬如Pt、Ag、Cu，以各擔體進行XRD分析鑑定其各為鈣鈦礦型及螢石型結構，且各觸媒先行氫氣程溫還原實驗(H2-TPR)，一方面鑑定各活性金屬的還原波峰，一方面也將晶格氧還原成氧空缺，之後以還原過後之各觸媒行二氧化碳程溫氧化實驗(CO2-TPO)，吾人發現以LSCF為主的觸媒大約在600~620℃之間表面氧空缺會還原二氧化碳的其中一個氧而產生晶格氧和一氧化碳，CO2→CO+O，而到了690℃以上晶格氧則有往內部氧空缺傳導的現象發生，且含浸的活性金屬不同，對於二氧化碳的催化也有顯著的影響，實驗指出隨著含浸的活性金屬其被氧化的難易程度，二氧化碳催化活性有著以下的結果: Cu/LSCF > Ag/LSCF > Pt/LSCF > LSCF
而反觀以GDC為主的觸媒在此溫度範圍其對於二氧化碳的催化活性相較於以LSCF為主的觸媒相對低了許多，然而以不同重量比例的LSCF及GDC混合後，發現以100LSCF-50GDC的比例混合對於二氧化碳的催化有較佳的表現，此外本實驗也作了一氧化碳程溫還原實驗(CO-TPR)，發現相較於氫氣程溫還原實驗其在較低的溫度下就有晶格氧被還原，且其還原溫度及還原量相較於氫氣程溫還原都來得佳。

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