A kind of alkyl-substituted polycyclic biomass high-density aviation fuel and preparation method
An aviation fuel, high-density technology, applied in the aerospace field, can solve the problem of not being used directly as a fuel, and achieve the effect of improving flight performance, mild conditions, and a wide range of substrates
Active Publication Date: 2021-05-28
XI AN JIAOTONG UNIV
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Problems solved by technology
The methods mentioned above can only synthesize non-alkyl-substituted polycyclopentane compounds. Although these compounds have relatively high densities, they cannot be used directly as fuel because their freezing points are mostly >-40°C. They must have a low freezing point. Fuel compounding
Method used
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[0029] The present invention will be described in detail below in conjunction with the examples.
[0030] see figure 1 , the present invention uses cyclopentanone as a raw material, and through three-step simple reactions, polycyclic high-density aviation fuel compounds with alkyl substitutions are synthesized concisely and efficiently. Firstly, compound 1 was synthesized by using cyclopentanone as raw material and dimethyl carbonate under strong basic conditions; then a series of compound 1 was synthesized by solvent-free nucleophilic substitution / Mike addition reaction-hydrolytic decarboxylation reaction in two steps and one pot Polycyclic HDO precursor compounds; Finally, using Pd / C catalyst, a series of saturated hydrocarbons were obtained by hydrodeoxygenation under high temperature and pressure.
[0031] Among them, represented by compound 3-3 and 3-12 (C13: density 0.8542g / cm 3 (20℃), kinematic viscosity 2.29mm 2 / s(25℃), freezing point3 (20℃), kinematic viscosity 9....
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Abstract
An alkyl-substituted polycyclic biomass high-density aviation fuel and a preparation method, wherein cyclopentanone undergoes an aldol condensation-methyl esterification reaction with dimethyl carbonate under alkaline conditions to obtain a 1,3- Dicarbonyl compound 1; Compound 1, haloalkane and cycloalkenone were synthesized by a two-step one-pot solvent-free nucleophilic substitution / Mike addition-hydrolysis decarboxylation reaction; HDO precursor compound was synthesized using Pd / C catalyst at high temperature and high pressure Through the HDO reaction, a series of polycyclic high-density liquid hydrocarbon fuel compounds with alkyl substitutions were obtained. The synthetic route of the invention has simple reaction, mild conditions, high yield and wide substrate range, and the synthesized fuel has high density, volume calorific value and low freezing point, and can be applied to various aircrafts or used as an additive to improve aviation flight performance of fuel.
Description
technical field [0001] The invention belongs to the field of aerospace and relates to the synthesis of a class of alkyl-substituted polycyclic high-density aviation fuel, in particular to an alkyl-substituted polycyclic biomass high-density aviation fuel and a preparation method thereof, which can be widely used in the field of aerospace. Background technique [0002] In recent years, with the gradual depletion of fossil energy and the intensification of the greenhouse effect, in order to protect the environment and realize the sustainable development of human society, the preparation of liquid hydrocarbon fuels from renewable resources, especially biomass resources, has attracted increasing attention. Biomass is a complex composed of a variety of complex natural high-molecular organic matter. It is the only renewable resource that contains hydrocarbons and can be converted into fuels. The advantages of renewable and environmental friendliness of biomass resources indicate t...
Claims
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IPC IPC(8): C07C1/207C07C13/18C10L1/04C10L10/14
CPCC07C1/2076C07C45/676C07C67/00C07C67/343C10L1/04C10L10/14C10L2270/04C07C2601/08C07C2601/14C07C69/757C07C49/653C07C13/10C07C13/18
Inventor 王洪李占超王一卓
Owner XI AN JIAOTONG UNIV