藉由二氧化碳的甲烷重組反應，以減少溫室氣體並將二氧化碳轉化為合成氣是一項值得研發的技術。本研究以研發應用於此反應高性能的觸媒為主要目標。研究方向主要分為兩部分，第一部分針對波洛斯凱特(perovskite)型的觸媒的各項製備參數進行探討，並找出最佳的製備條件。第二部份對於各項觸媒進行活性的測試，試圖挑選出活性最佳並能抗積碳的觸媒。除此之外，對觸媒進行各項物理及化學上的鑑定，以找出影響觸媒活性的原因。
以溶膠凝膠法製備波洛斯凱特型觸媒LaNiO3時，其主要影響參數為檸檬酸/金屬離子比例、檸檬酸/乙二醇比例、溶液pH值、鍛燒溫度及鍛燒升溫速率等。在研究中，先改變每項製備參數，探討它們對觸媒性能的影響，並以SEM、XRD等對觸媒進行鑑定。結果發現在製備觸媒前驅物時，檸檬酸/金屬離子的比例在3~4之間，乙二醇的添加量10 ml，製備出來的觸媒顆粒較小且均勻。在鍛燒溫度方面，以10oC/min的升溫速率升溫至700oC，並且持溫2 h，合成的觸媒顆粒最小(<100 nm)，結晶相也最為完整。
對多種觸媒進行CH4-CO2重組反應活性測試，實驗結果顯示：擔載在Ce0.75Zr0.25O2上的Ni，以5 wt%的擔載量最為適當；在此一觸媒中添加貴金屬，以Ru/Ni=0.1的添加量活性最佳。對不同金屬比例的Ni-Mg-Al類水滑石觸媒進行活性測試，發現Ni/Mg/Al=1/5/2的比例最佳。這二種觸媒在400 oC即可開始反應生成CO和H2，且在600℃下30小時的穩定測試中，其轉化率皆能達到穩定，證明觸媒具有抗積碳的能力，並擁有不錯的耐久性。

　　The process of carbon dioxide reforming of methane (CH4 + CO2 → 2CO + 2H2), which consumes two greenhouse gases and produces synthesis gas, is worth developing. In this study, the catalysts with high catalytic activity for this reaction were investigated. The research included two parts. In the first part, the influencing factors for preparing the perovskite-type catalysts were investigated and the proper preparation parameters were determined. The activity tests of several kinds of catalysts were carried out in the second part, and the catalyst with the best performance and coke resistance was picked up. In addition, the physical and chemical properties of catalysts were characterized to find their effect on the catalytic activity.
　　When perovskite-type catalysts were prepared by the sol-gel method, the main affecting factors are ratio of citric acid to metal ion, ratio of citric acid to ethylene glycol, pH value calcination temperature and heating rate. In this study, each factor was changed individually to determine its effect on catalyst performance. SEM and XRD were used to characterize the catalysts. The results show that when the ratio of citric acid to metal ion is between 3 and 4 and that of citric acid to ethylene glycol is 1 in the preparation of catalyst precursor, the catalyst particles are smaller and more uniform. For calcination process, the temperature should be raised to 700℃ with heating rate of 10℃/min and held for 2 hours to get the smallest (<100 nm) and most completely crystallized catalyst particles.
　　The result of activity tests reveal that the optimal Ni loading in Ce0.75Zr0.25O2 is 5 wt%. Among several noble metals tested, Ru with Ru/Ni=0.1 added to this catalyst, the highest activity could be obtained. The activity tests of hydrotalcite-like catalyst, Ni-Mg-Al, with different metal ratios show that the activity was the highest when the ratio of Ni/Mg/Al equals to 1/5/2. These two catalysts can produce CO and H2 at 400℃. Their conversions remained constant during an on-stream of 30 hours at 600℃. This fact suggests that these catalysts can impede carbon deposition and have excellent durability.

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