期刊
SUSTAINABLE ENERGY & FUELS
卷 4, 期 11, 页码 5560-5567出版社
ROYAL SOC CHEMISTRY
DOI: 10.1039/d0se01110j
关键词
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资金
- National Natural Science Foundation of China [21776273, 21690082, 21603221]
- DICP [DICP I201944]
- DNL Cooperation Fund, CAS [DNL180301]
- Strategic Priority Research Program of the Chinese Academy of Sciences [XDB17020100]
- National Key Projects for Fundamental Research and Development of China [2016YFA0202801]
In this work, jet fuel range high-density dicycloalkanes were manufactured from methyl benzaldehyde and acetone, two platform compounds which may be obtained from lignocellulose. Protonated titanate nanotubes (PTNTs), a cheap and easily prepared solid acid catalyst, was first found to be a stable, durable and highly efficient catalyst for the preparation of the jet fuel precursors by the acid-catalyzed aldol condensation of acetone and methyl benzaldehydes. Over this catalyst, high yield (similar to 76%) of jet fuel precursors was reached under mild reaction conditions. The PTNT catalyst can be repeatedly used without significant deactivation, which is advantageous in real application. On the basis of the characterization, the good performance of the PTNT catalyst can be attributed to its special nanotube morphology, bigger surface area, higher acid site amount and acid strength. After the hydrodeoxygenation of jet fuel precursors in cyclohexane under mild conditions (403 K, 5 MPa, 2 h), high yields (similar to 90%) of dicycloalkanes were achieved. These dicycloalkanes have higher densities than ordinary jet fuel. Therefore, they may be blended into jet fuel to raise the range (or payload) of airplanes.
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