生質柴油為具發展潛力的替代能源，氧化鍶粉末為轉酯化製程中常見的催化劑，其具有高轉化率、轉化時間短等優勢，但在製程中有回收不易的缺點，文獻提出將氧化鍶沉積在基材上的負載式催化劑，此方式可提升回收性，並增加反應表面積；而加熱方式也會大幅影響轉酯化效率，使用微波加熱可以使能量聚焦並提升反應速率。本研究提出以鈦薄板作為負載式催化劑載體，定義為SrO(x)_Ti (x= 0.1, 0.3, 0.5, 0.7 M)；轉酯化反應以橄欖油為原料，並使用聚焦式微波加熱作為反應加熱源；透過XRD及XPS高分辨譜得知試片上團聚結構為SrO相，並在鍍層與基板間形成二次相的化合物，可使催化劑附著於基板；氧化鍶的附著力透過改良的ASTM D3359剝離力測試評估，結果顯示SrO(0.7)_Ti為標準中3B等級，25 %以上的氧化鍶覆蓋層被剝離，附著力不足；最後使用表面粗度儀評估試片反應表面積，SrO(0.5)_Ti的中心線平均粗糙度為1.6 μm，為所有參數中最佳，因此，在轉酯化的實驗中將會使用SrO(0.5)_Ti進行；轉化效能的評估，使用拉曼光譜儀測試轉酯化產物，初步觀察到轉酯化反應的產生；透過XPS對反應後試片測試確認生質柴油殘留在試片上；GC測試證實了在加熱4分鐘的參數中能夠達到87.7 %的最佳轉化率；最後評估了生質柴油的燃燒熱及含水率，得到結果分別為燃燒熱39.37 MJ/kg和平均含水率0.7 vol%；綜上所述，透過SrTiO3使氧化鍶與鈦基板結合，搭配聚焦式微波批次加熱轉酯化可以在短時間內達到80 %以上轉化率，且轉化產物燃燒熱值與文獻標準相符，有潛力應用於未來工業生產上。

In this study, a Ti-based plat was produced from powder metallurgy and using different concentrations of sol-gel, SrO deposited Ti (SrO(x)_Ti, x = 0.1, 0.3, 0.5, 0.7 M) was fabricated. SrO solution can be sufficiently introduced into the Ti-based plat structure to improve its superiority. Compositional and mechanical tests were conducted on SrO(x)_Ti to optimize the concentration parameters.
XPS results showed the formation of aggregated strontium oxide structure on the SrO(0.5)_Ti and SrO(0.7)_Ti surface. The intermediate compound SrTiO3 provided the chemical bonding between the coating and substrate. Adhesion and surface roughness tests indicated that SrO(0.5)_Ti has optimal mechanical properties, which is appropriate for catalyzing transesterification. Conversion values as high as 87.7 % in 4 mins irradiation were observed from GC analysis using this SrO(0.5)_Ti catalyst, demonstrating the feasibility of biodiesel production from olive oil in a very short time. The biodiesel products are verified to have 39.37 MJ/kg of HHV and lower than 1 vol% of water content. The results showed that SrO(0.5)_Ti has a high reaction efficiency under a focused microwave batch system, which is a potential catalyst choice for industrial production of biodiesel in the future.

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