New fuel production alternatives are becoming increasingly necessary to replace fossil energy sources and reduce the environmental implications of carbon emissions. In this context, renewable sources, such as waste cooking oil (WCO), are an excellent choice for producing bio-based fuels. However, to use WCO as fuel, the oxygen content in its triglyceride structures must be removed. To this end, bimetallic Co-Mo and Ni-Mo supported on pristine carbon nanotubes (CNT) and oxidized carbon nanotubes (CNTox) were synthesized to investigate the hydroprocessing of WCO in a batch reactor operating at 350 °C, 70 bar of H2 (evaluated at ambient temperature) for 3 h. The results showed that Ni-Mo/CNTox exhibited superior catalytic performance, mainly producing n-alkanes in the range of C14-C22 with a carbon conversion of about 67 mol.% and being selective for light alkanes (6.6 mol.% of C5-C7), jet fuel (11.4 mol.% of C8-C16) and diesel fuel (81.2 mol.% of C17-C22). On the other hand, a residence time of 5 h was necessary to achieve the same results with the carbon-supported Co-Mo catalysts. Hydrodeoxygenation was the main deoxygenation route followed using CNT based catalysts.

中文翻译：

---

对废弃食用油进行加氢处理，在碳纳米管上负载的 Ni-Mo 和 Co-Mo 上生产液体燃料


新的燃料生产替代品对于替代化石能源和减少碳排放对环境的影响变得越来越必要。在这种情况下，废弃食用油 （WCO） 等可再生资源是生产生物基燃料的绝佳选择。然而，要使用 WCO 作为燃料，必须去除其甘油三酯结构中的氧含量。为此，合成了原始碳纳米管 （CNT） 和氧化碳纳米管 （CNTox） 负载的双金属 Co-Mo 和 Ni-Mo，以研究 WCO 在 350 °C、70 bar H2 下运行3 h的间歇式反应器中（在环境温度下评估）的加氢处理。结果表明，Ni-Mo/CNTox 表现出优异的催化性能，主要产生 C14-C22 范围内的正构烷烃，碳转化率约为 67 mol.%，对轻烷烃（C5-C7 的 6.6 mol.%）、喷气燃料（C8-C16 的 11.4 mol.%）和柴油燃料（C17-C22 的 81.2 mol.%）具有选择性。另一方面，要使用碳负载的 Co-Mo 催化剂获得相同的结果，需要 5 h 的停留时间。加氢脱氧是使用基于 CNT 的催化剂的主要脱氧途径。