期刊
FUEL PROCESSING TECHNOLOGY
卷 218, 期 -, 页码 -出版社
ELSEVIER
DOI: 10.1016/j.fuproc.2021.106842
关键词
Alkyl adamantane; High-energy-density fuel; Combustion property; Oxidation stability; Specific impulse
资金
- National Natural Science Foundation of China [21978200]
- Scientific Research Projects of the Ministry of Education of China [6141A02033522]
Alkyl diamondoids show potential as high-energy-density fuels for aerospace propulsion, with this study reporting high-yield synthesis of mono-substituted alkyl diamondoids and developing a one-step hydrodeoxygenation method. Evaluation of their oxidation stability and combustion properties was conducted.
Design and choice of fuels continue to be improved for aviation propulsion, and alkyl adamantanes have attracted great attention due to their high density, good low-temperature properties and potential characteristics. Herein, we reported a facile route to synthesize mono-substituted alkyl adamantanes via modified Grignard coupling (followed with one-step hydrodeoxygenation), including 1-ethyl-adamantane, 2-ethyl-adamantane, and 1-n-propyl-adamantane with high yields (> 75%). The process was modified via concentrating the Grignard reagents and altering the solvent, and one-step hydrodeoxygenation catalyzed by commercial Pd/C and zeolites was developed. Subsequently, comprehensive characteristics of alkyl diamondoid series, such as oxidation stability and combustion properties, were evaluated using pressure differential scanning calorimetry, rapid smallscale oxidation test, and hot-plate ignition test. Also, the specific impulse of alkyl diamondoids were revealed by theoretical calculation. The high-density alkyl diamondoids present adequate oxidation stability and possess better combustion characteristics over JP-10, thus can be considered as potential high-energy-density fuel for aerospace propulsion.
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