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Cyclopentadienyl three-membered ring fuel and its preparation method, application and aerospace vehicle fuel

A cyclopentadienyl, three-membered ring technology, applied in the field of liquid fuel propellants, can solve the problems of reducing the calorific value of fuel quality, and achieve the effects of low freezing point, high volume calorific value and high density

Active Publication Date: 2021-09-21
TIANJIN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although increasing the number of five-membered or six-membered rings in the fuel molecule can increase its density, the increase in the number of rings will reduce the hydrogen content in the hydrocarbon molecule, resulting in a decrease in the mass calorific value of the fuel

Method used

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  • Cyclopentadienyl three-membered ring fuel and its preparation method, application and aerospace vehicle fuel
  • Cyclopentadienyl three-membered ring fuel and its preparation method, application and aerospace vehicle fuel
  • Cyclopentadienyl three-membered ring fuel and its preparation method, application and aerospace vehicle fuel

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preparation example Construction

[0043] In another aspect of the present invention, the present invention provides a kind of preparation method of aforementioned cyclopentadienyl three-membered ring fuel, and this preparation method comprises:

[0044] making the reaction substrate and the metal carbene undergo a cyclopropanation reaction to obtain the cyclopentadienyl three-membered ring fuel;

[0045] Wherein, the reaction substrate includes at least one of dimethyldicyclopentadiene, 5-ethylidene-2-norbornene and tricyclopentadiene,

[0046] The metal carbene body includes at least one of the following compounds: F 3 CCOOMCH 2 X, Cl 3 CCOOMCH 2 X, Cl 2 CHCOOMCH 2 X, F 3 CSO 2 OMCH 2 X, CH 3 COOMCH 2 X and HCOOMCH 2 At least one of X, M includes Zn, Al or Li, and X includes halogen.

[0047] The above preparation method is simple and convenient to operate, easy to implement, high in yield and suitable for industrial application.

[0048] In some embodiments of the present invention, the metal ca...

Embodiment 1

[0075] The preparation method of cyclopentadienyl three-membered ring fuel is as follows:

[0076] 1) At -15°C, in a 100mL triple-jacketed reactor, first add 9mL of CH 2 Cl 2 , pass on N 2 Flow protection, syringe draws 9mL Et 2 Zn (1M n-hexane solution) was added to the reactor. 668 μL F 3 Dissolve CCOOH in about 4 mL CH 2 Cl 2 , add the constant pressure dropping funnel, turn on the mechanical stirring, the speed is 200r / min, feed the material drop by drop into the reactor at a speed of 0.5 drops / second, the solution gradually turns from clear to milky white suspension. After the dropwise addition, the reaction was continued for 20 min. 726 μL CH 2 I 2 Soluble in about 4mL CH 2 Cl 2 , into the constant-pressure dropping funnel, and feed into the reactor drop by drop at a rate of 1 drop / second. During the addition, the milky white suspension gradually turned into a clear transparent solution, and then into a milky white suspension. After the dropwise addition, th...

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Abstract

The invention provides a cyclopentadienyl three-membered ring fuel, its preparation method, application and aerospace vehicle fuel, and relates to the field of liquid fuel propellants. The cyclopentadienyl three-membered ring fuel includes at least one of the following compounds Species: Dimethylpentacyclic [6.3.1.0 2,7 .0 3,5 .0 9,11 ]dodecane, 2‑methylspiro[cyclopropane‑1,6′‑tricyclo[3.2.1.0 2,4 ]octane], heptane [10.3.1.1 3,10 .0 2,11 .0 4,9 .0 6,8 .0 13,15 ]heptadecane, and heptacyclo[10.3.1.1 5,9 .0 2,11 .0 4,10 .0 6,8 .0 13,15 ] at least one of heptadecane. The cyclopentadienyl three-membered ring fuel has excellent properties of high density, high calorific value and low freezing point.

Description

technical field [0001] The invention relates to the technical field of liquid fuel propellants, in particular to a cyclopentadienyl three-membered ring fuel, its preparation method, application and aerospace vehicle fuel. Background technique [0002] Liquid fuels are widely used in aerospace engines with turbine, ramjet, rocket-ramjet, and turbine-ramjet combined power. The performance of the aircraft (including range, speed and payload, etc.) depends largely on the nature of the fuel used, among which The most important characteristics are fuel density and volumetric heating value. For an aerospace vehicle with a certain fuel tank volume, the higher the volumetric calorific value of the fuel, the greater the energy released per unit volume of fuel consumed, which is more beneficial to improve the performance of the aircraft in terms of range, speed and payload. Or under the premise of keeping all aspects of the performance of the aircraft unchanged, the use of fuel with a...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C10L1/04
CPCC10L1/04C10L2270/04
Inventor 潘伦邹吉军马驰张香文
Owner TIANJIN UNIV