Abstract Catalytic hydrodeoxygenation (HDO) has been considered as a promising technical route to upgrade fast pyrolysis oil to liquid transportation fuels. In this work, a series of active and inexpensive catalysts were synthesized for bio-oil HDO, i.e., activated carbon (AC)-supported nickel phosphide and cobalt phosphide catalysts, with a metal/P molar ratio varying from 5/2, 3/2, 1/1, 1/2, 1/3. For comparison, AC-support pure metal catalysts without P were also prepared. Effects of phosphorus content on HDO performance of the catalysts were investigated on a 100 mL bench-scale reactor system using a wood-derived pyrolysis oil at 300 °C and initial hydrogen pressure of 50 bar for 3 h. The results showed that the properties of the upgraded bio-oils were greatly affected by the phosphorus content in both Ni and Co catalysts. The best performance seemed to be achieved with the catalysts at a metal/P molar ratio of about 3/2. Moreover, 0.5 wt% of Ru was further added to the catalysts at a metal/P molar ratio of 3/2 and to the pure metal catalysts. The addition of a small amount of Ru was found to markedly decrease the relative molecular weight of the upgraded bio-oils, and achieved high quality bio-oil products similar to that obtained with an expensive commercially available 5 wt% Ru/C catalyst.

中文翻译：

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新型活性炭负载NiP和CoP催化剂对快速热解油的加氢脱氧

摘要 催化加氢脱氧（HDO）被认为是一种将快速热解油升级为液体运输燃料的有前景的技术路线。在这项工作中，合成了一系列活性廉价的生物油 HDO 催化剂，即活性炭（AC）负载的磷化镍和磷化钴催化剂，金属/P 摩尔比从 5/2、3/ 2、1/1、1/2、1/3。为了比较，还制备了不含 P 的 AC 载体纯金属催化剂。磷含量对催化剂 HDO 性能的影响在 100 mL 实验室规模反应器系统上使用木材衍生的热解油在 300 °C 和 50 bar 的初始氢气压力下进行 3 小时的研究。结果表明，Ni和Co催化剂中磷含量对改性生物油的性能影响很大。最好的性能似乎是用金属/P 摩尔比约为 3/2 的催化剂实现的。此外，以3/2的金属/P摩尔比将0.5wt%的Ru进一步添加到催化剂和纯金属催化剂中。发现添加少量 Ru 显着降低了升级生物油的相对分子量，并获得了与使用昂贵的市售 5 wt% Ru/C 催化剂获得的产品相似的高质量生物油产品。