隨著人口的增長，運輸需求與石油燃料的開發增加溫室氣體的排放，在有限的資源下，人類開始發展可再生生物燃料以提供傳統石化燃料未來短缺的龐大需求。過去幾年，三酸甘油酯的植物油可透過液相固體觸媒催化酯交換法，生產具有優勢與環保的生質柴油。生質柴油與石化燃料相比存在幾個缺點，例如生質油具有高氧含量導致低溫流動性差和低能量密度，而透過加氫處理的燃料具有與石化燃油相似的性質，可作為更佳的替代生質油，並可直接使用化工廠內固有的石油精煉基礎設施來加氫處理提高油料價值。除了能提供未來能源缺乏的需求之外，也能大幅降低石化燃油造成的空氣汙染和溫室效應問題，使生質能進入自然碳循環中。加氫處理中需要加入適當的催化劑來降低反應條件與增加反應速率，其中會使用到雙功能型觸媒來達到增效的作用，改質的金屬位點主要提供加氫與脫氫所需要的活性點，而催化劑中酸性位點具有異構化與裂化的功能。本實驗考慮透過異相觸媒方式，具有方便回收使用與降低分離成本的優勢，因此，選用研究以探討異相雙金屬雙功能型觸媒進行生質燃油的反應。
本研究以商用酸性ZSM-5型沸石作為主要的載體，其具有高比表面積能夠均勻分散金屬觸媒擔體，降低金屬的使用量與提高其分散性，並提供酸性活性點進行加氫裂化及異構化反應，利用設備方便的含浸法擔載鎳與鎳鉬活性金屬，作為氫溢流活化氫氣的活性位，比較添加鉬金屬是否比單純鎳金屬具備有更好的加氫脫氧活性。此外，亦透過質譜儀來分析液相產物中異構物或是低碳數的碳氫化合物成分，期望生產出具備有類石化燃料的生質燃油，應用於未來更進一步生質能研究。由實驗結果可知，於棕櫚酸:改質觸媒=1 : 0.25重量比條件下，鎳鉬觸媒轉化率在300°C與氫氣壓力35 bar下，4小時成功達到99%，擔載鎳鉬的改質觸媒具有更優於擔載鎳觸媒的加氫脫氧活性，而經過轉換後，可以發現碳數下降，裂解反應將脫氧的正十六烷轉化為低碳數的碳氫物質。

In this study, Ni/Mo bimetallic catalysts supported on zeolite ZSM-5 catalysts, aka Ni-Mo/ZSM5, were successfully prepared by the wetness impregnation method to heterogeneously hydrotreat palmitic acid with an aim for the production of liquid alkane fuels. A Ni-content about 10 wt% of zeolite ZSM-5 support with various Mo-contents was found on these Ni-Mo modified catalysts. Various instruments, such as XRD, SEM, BET, XPS, NH3-TPD, SQUID and H2-TPR, were employed to characterize these catalysts. Typically, the catalyzed hydrodeoxygenation (HDO) reaction of palmitic acid was carried out in a batch autoclave at 573 K with an initial pressure of hydrogen at 35 bar at this temperature. With Ni-Mo(R)/ZSM5 catalysts, the conversion of palmitic acid could reach near 99% at 573K after HDO reaction for 4h. Furthermore, a significant portion of isomerized alkanes were obtained in the product as revealed by GC-MS. That is, both hydrodeoxygenation (HDO) and hydroisomerization reactions took place conjointly with Ni-Mo(R)/ZSM5 catalysts.

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