Synthesis of Jet-Fuel Range Cycloalkanes from the Mixtures of Cyclopentanone and Butanal

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• 作者：Jinfan Yang ; Shanshan Li ; Ning Li ; Wentao Wang ; Aiqin Wang ; Tao Zhang ; Yu Cong ; Xiaodong Wang ; George W. Huber
• 刊名：Industrial & Engineering Chemistry Research
• 出版年：2015
• 出版时间：December 2, 2015
• 年：2015
• 卷：54
• 期：47
• 页码：11825-11837
• 全文大小：929K
• ISSN：1520-5045

文摘

High-density (0.82 g mL^鈥?) jet-fuel range cycloalkanes were synthesized in high overall yields (鈭?0%) by the aldol condensation of cyclopentanone and butanal followed by hydrodeoxygenation (HDO). Among the investigated solid-base catalysts, magnesium鈥揳luminum hydrotalcite (MgAl-HT) exhibited the highest activity for the solvent-free aldol condensation of cyclopentanone and butanal. The excellent performance of MgAl-HT was rationalized by the synergism between strong base and weak acid sites on the surface of this material. The aldol condensation products were further hydrodeoxygenated to butylcyclopentane and 1,3-dibutylcyclopentane over the Ni/SiO₂, Pd/SiO₂, and bimetallic Ni鈥揚d/SiO₂ catalysts. Compared to the Ni/SiO₂ and Pd/SiO₂ catalysts, the bimetallic Ni鈥揚d/SiO₂ catalyst exhibited higher activity for the solvent-free HDO reaction. Over the 4%Ni鈥?%Pd/SiO₂ catalyst, high carbon yield (88.0%) of butylcyclopentane and 1,3-dibutylcyclopentane was achieved at 503 K. According to the characterization results, the excellent performance of Ni鈥揚d/SiO₂ catalyst can be explained by the formation of Ni鈥揚d alloy.