The hydroprocessing of palm oil was performed in a continuous fixed bed reactor to produce biojet fuel. Rh/HZSM‐5 was used as catalyst and was characterized by N₂ adsorption‐desorption, x‐ray diffraction (XRD), Scanning electron microscopy (SEM), NH₃‐temperature programmed desorption (NH₃‐TPD), and H₂‐temperature programmed reduction (H₂‐TPR). The effect of operating parameters including reaction temperature, molar ratio, and solvent on the yield of biojet and biodiesel was investigated. The catalyst deactivated rapidly in the solvent‐free system due to carbon deposition. The application of 30% heptane in the feed maintained the conversion of palm oil above 90% for 8 hours. At 330°C, the yield of liquid fuel product was slightly less than that obtained at 300°C as more gaseous product was formed. The H₂‐to‐oil molar ratio of 158 at 300°C was insufficient to maintain the reaction at high conversion. At 300°C and a H₂‐to‐oil molar ratio of 316, the system was stable for the entire experimental period of 8 hours providing the biojet yield and selectivity of 15.3% and 28.5%, respectively. Although, this system was operated at a relatively low temperature for hydroprocessing, the productivity parameter of 0.60 kg product/Kg cat‐h was significantly higher compared to the data provided in the literature.

中文翻译：

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使用Rh / HZSM-5加氢处理棕榈油以在固定床反应器中生产生物喷射燃料

棕榈油的加氢处理在连续固定床反应器中进行，以生产生物喷射燃料。Rh / HZSM-5用作催化剂，其特征在于N ₂吸附-解吸，X射线衍射（XRD），扫描电子显微镜（SEM），NH _3-温度程序解吸（NH ₃ -TPD）和H ₂程序升温还原（H ₂-TPR）。研究了反应温度，摩尔比和溶剂等操作参数对生物射流和生物柴油收率的影响。由于无碳沉积，催化剂在无溶剂体系中迅速失活。进料中使用30％庚烷可在8小时内将棕榈油的转化率保持在90％以上。在330℃下，随着形成更多的气态产物，液体燃料产物的产率略低于在300℃下获得的产率。在300°C下H ₂与油的摩尔比158不足以维持高转化率的反应。在300°C和H _2下与油的摩尔比为316，系统在整个8小时的实验时间内均保持稳定，从而提供的生物射流产率和选择性分别为15.3％和28.5％。尽管该系统在相对较低的温度下进行加氢处理，但与文献中提供的数据相比，生产率参数为0.60 kg产品/ Kg cat-h显着更高。