The influences of impurities and oxidation evolution of waste cooking oil on the preparation of bio‐jet fuel via hydroconversion were studied. The hydrogenation active sites and acid sites were covered by heavy metals, sulfides, and basic nitrogen compounds, resulting in the increase of selectivity for bio‐jet fuel by decreasing the selectivity of diesel, aromatics, and iso‐alkanes. The effects of impurities, oxidation on the reaction pathway, and product distribution became more distinct with higher catalyst acidity. The evolution and variation of naphthalene, indan, and phenanthrene obtained from cyclic fatty acids influenced the properties of fuel or evoked the catalyst deactivation. This work will help to design new catalysts for selective conversion of waste cooking oil into bio‐jet fuel.

中文翻译：

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杂质和氧化对食用油废料加氢转化为生物喷气燃料的影响

研究了废食用油中杂质和氧化演变对加氢转化制备生物喷气燃料的影响。氢化活性位点和酸性位点被重金属，硫化物和碱性氮化合物覆盖，从而通过降低柴油，芳烃和异烷烃的选择性而提高了生物喷气燃料的选择性。随着较高的催化剂酸度，杂质，氧化对反应路径和产物分布的影响变得更加明显。由环状脂肪酸获得的萘，茚满和菲的演变和变化影响燃料的性质或引起催化剂失活。这项工作将有助于设计新的催化剂，用于将废食用油选择性转化为生物喷气燃料。