Microalgae lipids extracted by hydrothermal method through deoxygenation and hydrocracking to produce jet fuel

被引：0

作者：

Cheng J. ^{[1
]}

Liu J.-F. ^{[1
]}

Zhang X. ^{[1
]}

Zhang Z. ^{[1
]}

Tian J.-L. ^{[1
]}

Zhou J.-H. ^{[1
]}

Cen K.-F. ^{[1
]}

机构：

[1] State Key Laboratory of Clean Energy Utilization, Zhejiang University, Hangzhou

来源：

Zhejiang Daxue Xuebao (Gongxue Ban)/Journal of Zhejiang University (Engineering Science) | 2019年 / 53卷 / 02期

关键词：

Decarboxylation; Jet fuel; Microalgae; Quantum chemistry;

D O I：

10.3785/j.issn.1008-973X.2019.02.002

中图分类号：

学科分类号：

摘要：

The microalgae lipids extracted by continuous flow hydrothermal equipment were deoxidized and hydrocracked under the action of catalyst to produce jet fuel, in order to improve the selectivity of jet fuel from microalgae. The C16~C24 fatty acid was extracted from the microalgae cells by subcritical water, and the fatty acid was deoxidized and hydrocracked under the action of Ni-based mesoporous Y zeolite catalyst to obtain the jet fuel product. Results showed that the selectivity of jet fuel product at 390 ℃ was 50.79%, with the alkane selectivity of 43.21%. The main component of microalgae hydrothermal lipid was palmitic acid, of which the main jet fuel product after decarboxylation was pentadecane. Fourier transform infrared spectroscopy results showed that the absorption peaks of C=C, -CHO, and -CH 2 appeared in the product, indicating that the Ni/Y catalyst can effectively promote the deoxygenation and hydrocracking of the microalgae hydrothermal lipid. Elemental analysis results showed that the mass fractions of carbon and hydrogen in the jet fuel products prepared by hydrothermal lipid were higher than those in the jet fuel products prepared by algae powder. Quantum chemistry calculation showed that the shortest bond length (0.080 071 nm) and the highest bond energy (361.074 5 kJ/mol) existed between the carbon atom in carboxyl group and the ortho carbon atom in the palmitic acid. However, Ni-H could elongate the bond length between these two carbon atoms and promote the occurance of decarboxylation reaction. © 2019, Zhejiang University Press. All right reserved.

引用

页码：214 / 219

页数：5

共 15 条

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