A method for directional synthesis of polycyclic high-density aviation fuel using cyclopentanone as raw material

Abstract

The invention relates to a method for directionally synthesizing a polycyclic high-density aviation fuel by using cyclopentanone as a raw material. In the presence of dimethyl carbonate, the cyclopentanone undergoes aldol condensation-methyl esterification reaction under alkaline conditions to form a 1,3-dicarbonyl compound 1 with a bicyclic structure. Then under the solvent-free condition, the compound 1 and various alkyl halides undergo nucleophilic substitution reaction under alkaline conditions to synthesize a series of high density fuel intermediate compounds. Under the catalysis of Lewisacid / proton acid, a series of bicyclic, tricyclic, tetracyclic and pentacyclic high-density hydrocarbon fuel compounds are synthesized by hydrogenating and deoxidizing intermediate compounds with a hydrosilylation reagent. The liquid hydrocarbon fuel synthesized by the method can be used for various aircrafts or used as an additive to improve the flight performance of aviation fuel.

Description

technical field [0001] The invention belongs to the field of aerospace and relates to a polycyclic high-density aviation fuel, in particular to a method for directional synthesis of polycyclic high-density aviation fuel using cyclopentanone as a raw material, which can be widely used in the aerospace field. Background technique [0002] In recent years, with the extensive use of fossil fuels and the impact of environmental degradation, the development of new sustainable green energy technologies such as biomass has attracted widespread attention. As a kind of transportation fuel, aviation fuel has been widely used in aviation field. At present, the main aviation fuels in the world are all prepared from petroleum base as the main source. Considering environmental protection, energy security and economic value, it is very necessary to develop biomass-based aviation fuel. [0003] Aviation kerosene is generally composed of C6-C16 saturated straight-chain or branched-chain alk...

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Problems solved by technology

[0010] Based on the above synthesis reports, it can be seen that the self-condensation reaction of cyclopentanone can only be used to synthesize dicyclopentane high-density fuel

Moreover, their properties have been reported, and there are certain shortcomings in practical use.

For example, less dense or more viscous which affects the transport and combustion properties of the fuel

The condensation products of cyclopentanone and other ketones or aldehydes can only be used to synthesize compounds with a single cyclopentane, resulting in a significant reduction in the density of these liquid fuels and a significant reduction in the calorific value of combustion

(density3 ; Combustion heat 200°C,>6MPa), the reaction conditions are relatively harsh, and the requirements for the reaction equipment are relatively high, and the reaction process There will also be obvious safety hazards, which is not conducive to mass production

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