為了研發未來可應用於氣渦輪引擎之合成氣燃燒的蜂巢狀觸媒，本研究在兼顧觸媒活性的前提下，嘗試不同的披覆方法來增強蜂巢狀陶瓷載體對波洛斯凱特（perovskite）型觸媒的附著力。
實驗分二階段進行。在第一階段中，首先選用碳氫化合物中最不易燃燒的甲烷作為反應氣體，以它的催化燃燒難易做為指標；而觸媒方面則是選用La0.7Ce0.3Co0.6Mn0.4O3作為活性物質。在改良蜂巢狀陶瓷載體與觸媒間吸附力的初步實驗中，發現以稀薄溶膠法直接擔載活性物質能得到最佳的附著力。之後改變檸檬酸於稀薄溶液中之添加量，找出最適合的披覆條件，期能獲得最佳催化活性，此外也利用超音波震盪器、BET、SEM、TEM、Nano Focus和XRD等儀器與設備，探討影響觸媒吸附力與催化活性之因素。結果顯示當金屬鹽離子（Me）與檸檬酸（CA）的莫耳比例為1：2，同時擁有卓越的附著力與不錯的催化活性。
第二階段份則是取第一階段最好的條件製成蜂巢狀觸媒，應用在合成氣潔淨燃燒，反應氣體則選擇合成氣中主要的成分(氫氣、一氧化碳、甲烷)。在進行個別燃燒中，合成氣各成份氣體被蜂巢狀perovskite觸媒催化的難易程度依序為：CO＞H2＞CH4。在蜂巢狀perovskite觸媒混合氣燃燒中，改變氣體總濃度及各成份的比例，CO的添加皆無法對H2產生提前引燃的作用。當1 % CH4添加於5 % H2＋5% CO的合成氣進行燃燒，所有氣體成份皆可在700 ℃下達完全轉化。最後以蜂巢狀觸媒催化含10 %CO與10 %H2的合成氣燃燒，發現當WHSV為200 L g-1 hr-1在600 ℃下可以達到96 %以上的轉化率。

In order to apply the honeycomb-supported catalyst to syngas fuelled gas turbine, this research, focusing catalyst with high activity and durability, tries to promote the adhension between with the perovskite-type catalyst and the cordierite honeycomb monolithic support by using various coating methods.
The experiments were carried out in two steps. In the first step, we chose methane which is the most difficult to oxidize among hydrocarbons as the reacting gas, and we used La0.7Ce0.3Co0.6Mn0.4O3 as the active species. In the preliminary experiment for improving adhension between the perovskite-type catalyst and the monolithic support, we found out that the diluted sol-gel coating method gave the strongest adhension. Therefore in the subsequent experiments, we added various moles of citric acid to the diluted sol-gel precursor. Experimental results reveal that when the molar ratio of metal ions to citric acid was 1 to 2, the catalyst prepared not only has a good adhesion, but also has a higher activity. We also characterized the catalysts by BET, SEM, TEM, Nano Focus and XRD. According to the results obtained from the above-mentioned techniques, we can understand the factors affecting the adhesion and catalytic activity.
In the second step, we used the best coating condition choesn from the first step to prepare the honeycomb-supported catalyst, and used it for the combustion of syngas and it’s components (CO, H2 and CH4), the activities of this honeycomb-supported catalyst for the components of syngas were found in the order of CO＞H2＞CH4. As to the combustion of mixed gas catalyzed by the honeycomb-supported catalyst, we observed that addition of CO did not cause H2 to ignite earlier. Moreover, when adding CH4 into 5 %CO+5 %H2, all of the components could be completely burned out at 700 ℃. Finally, we found that the conversions of CO and H2 in the combustion of the gas mixture containing 10 %CO+10 %H2 were above 96 % at 600 ℃ when WHSV was 200 L g-1 hr-1.

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