Abstract Hydrodeoxygenation (HDO) of various bio oil oxygenated model compounds in low H2 pressure has been discussed in this study. Because of the high yield of aromatic mixtures in bio-oil, they carry great potential for fuel efficiency. Nevertheless, due to its high viscosity, abundance of acid, and heteroatom contaminants, the bio-oil ought to be upgraded and hydrotreated in order to be applied as an alternative fuel. A continuous low H2 pressure HDO of bio-oil is favored as it could be simply integrated with conventional pyrolysis systems, functioning at low pressures, as well as supporting a flexible plan for serial processing in respective bio-refineries. Additionally, such a process is cheaper and safer in comparison with the high pressure set ups. This review meticulously elaborates on the operation conditions, challenges, and opportunities for using this process in an industrial scale. The operating temperature, the H2 flow ratio, the active site, and the catalyst stability are some important factors to be considered when it is intended to reach a high conversion efficiency for the HDO in low H2 pressure.

中文翻译：

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生物油含氧模型化合物的大气加氢脱氧：综述

摘要 本研究讨论了各种生物油含氧模型化合物在低 H2 压力下的加氢脱氧 (HDO)。由于生物油中芳香族混合物的高产率，它们具有巨大的燃料效率潜力。然而，由于其高粘度、丰富的酸和杂原子污染物，生物油应该升级和加氢处理以用作替代燃料。生物油的连续低 H2 压力 HDO 受到青睐，因为它可以简单地与传统的热解系统集成，在低压下运行，并支持在各个生物精炼厂中进行连续加工的灵活计划。此外，与高压设置相比，这种过程更便宜且更安全。这篇综述细致地阐述了运营条件、挑战、以及在工业规模上使用该工艺的机会。操作温度、H2 流量比、活性位点和催化剂稳定性是要在低 H2 压力下达到高转化效率的 HDO 时需要考虑的一些重要因素。