用于将 C16-C18 脂肪酸脱氧和异构化为可持续柴油和喷气燃料成分的 NiMo/ZSM-23 催化剂

IF 6.7 1区工程技术 Q2 ENERGY & FUELS

Fuel Pub Date : 2024-11-26 DOI:10.1016/j.fuel.2024.133588

K.S. Kovalevskaya, R.G. Kukushkin, O.O. Zaikina, O.A. Bulavchenko, T.V. Larina, I.S. Golubev, V.A. Yakovlev

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引用次数: 0

摘要

通过使用镍和钼前驱体盐的共溶液进行初湿浸渍，制备了一系列具有不同原子钼/（镍+钼）比率的镍钼/ZSM-23 催化剂。XRD 和拉曼光谱显示了氧化物催化剂中 NiMoO4 的形成。催化剂成分中钼含量的增加导致 NiO 相的数量减少，NiMoO4 相的数量增加。在 300 °C、PH2 = 2.5 MPa、H2/FAs = 2200 m3/m3、WHSV = 8.4 h-1 的条件下，在流动反应器中对脂肪酸（C16-C18）混合物进行加氢处理时，这与还原催化剂活性的变化相关。因此，NiMo-0.1 和 NiMo-0.25 催化剂的转化率和异构烷烃产量最高。当氢气与原料的比例增加到 3150 m3/m3 时，NiMo-0.4 催化剂的异构烷烃产量最高。

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NiMo/ZSM-23 catalysts for deoxygenation and isomerization of C16-C18 fatty acids to sustainable diesel and jet fuel components

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NiMo/ZSM-23 catalysts for deoxygenation and isomerization of C16-C18 fatty acids to sustainable diesel and jet fuel components

A series of Ni-Mo/ZSM-23 catalysts with a different atomic Mo/(Ni + Mo) ratio was prepared by incipient wetness impregnation with a co-solution of salts of Ni and Mo precursors. The formation of NiMoO₄ in the case of oxide catalysts was shown by XRD and Raman spectroscopy. An increase in the molybdenum content in the catalyst composition leads to a decrease in the amount of the NiO phase and an increase in the NiMoO₄ phase. This correlates with changes in the activity of the reduced catalysts during the hydrotreating of a mixture of fatty acids (C₁₆-C₁₈) in a flow reactor at 300 °C, P_H2 = 2.5 MPa, H₂/FAs = 2200 m³/m³ and WHSV = 8.4 h⁻¹. Thus, the highest conversion and iso-alkanes yield were observed in the case of NiMo-0.1 and NiMo-0.25 catalysts. With an increase in the ratio of hydrogen to raw materials to 3150 m³/m³, the highest yield of iso-alkanes is observed on the NiMo-0.4 catalyst.

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来源期刊

Fuel 工程技术-工程：化工

CiteScore

12.80

自引率

20.30%

发文量

3506

审稿时长

64 days

期刊介绍： The exploration of energy sources remains a critical matter of study. For the past nine decades, fuel has consistently held the forefront in primary research efforts within the field of energy science. This area of investigation encompasses a wide range of subjects, with a particular emphasis on emerging concerns like environmental factors and pollution.