Abstract H2-free deoxygenation is a very important process in producing high-quality biofuel without the use of H2 gas supply. Considering the costly price of the noble metals, transition metal (TM) based catalysts are more affordable, and the performance is comparable to the noble metal-based catalyst. In this study, TMO supported on zeolite Y catalysts (Ni-, Cu-, Co-, Zn- and Mn-Y) are prepared via wet-impregnation for deoxygenation of triolein, a model compound of non-edible oil under H2-free condition. The deoxygenation activity of TMO supported on zeolite Y is following the order of Ni-Y > Co-Y > Cu-Y > Mn-Y > Zn-Y. The nickel oxide supported on zeolite-Y (Ni-Y) shows the highest conversion up to 76.21 % with 84.28 % hydrocarbon selectivity after reacted at 380 °C for 2 h. Besides, the selectivity toward diesel range hydrocarbon is 92.61 %. The superior deoxygenation activity of Ni-Y can be related to synergistic effect between the reduced B/L and high hydrogenolysis ability of Ni that promote the decarboxylation reaction, suppress the cracking and polymerization of heavy hydrocarbon. Therefore, Ni-Y is a potential catalyst to obtain high quality green diesel from non-edible oil through catalytic deoxygenation without addition of external H2 source.

中文翻译：

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在无 H2 条件下甘油三油酸酯脱氧为绿色柴油：负载在 Y 型沸石上的过渡金属氧化物的影响

摘要 无H2脱氧是在不使用H2气源的情况下生产高质量生物燃料的一个非常重要的过程。考虑到贵金属的昂贵价格，过渡金属（TM）基催化剂更实惠，性能与贵金属基催化剂相当。在这项研究中，通过湿浸渍法制备了负载在沸石 Y 催化剂（Ni-、Cu-、Co-、Zn- 和 Mn-Y）上的 TMO，用于在无 H2 条件下对非食用油的模型化合物三油酸进行脱氧。状况。Y型沸石负载TMO的脱氧活性顺序为Ni-Y>Co-Y>Cu-Y>Mn-Y>Zn-Y。在沸石-Y (Ni-Y) 上负载的氧化镍在 380 °C 下反应 2 小时后显示出最高的转化率，高达 76.21%，烃选择性为 84.28%。除了，对柴油范围碳氢化合物的选择性为 92.61%。Ni-Y优异的脱氧活性可能与Ni的B/L降低和高氢解能力协同促进脱羧反应、抑制重烃裂解和聚合有关。因此，Ni-Y 是一种潜在的催化剂，可以在不添加外部 H2 源的情况下，通过催化脱氧从非食用油中获得高质量的绿色柴油。