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Pinene cyclopropane compound as well as preparation method and application thereof

A technology of pinene cyclopropane and allene cyclopropane, which is applied in the field of new aerospace fuels, can solve problems such as low mass calorific value and specific impulse, and achieve the effects of improving specific impulse and effective load, high specific impulse and good low temperature performance

Inactive Publication Date: 2021-04-30
TIANJIN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although the density of the fuel synthesized by the dimerization reaction has been greatly improved, the mass calorific value and specific impulse are still low. For example, the mass calorific value of the α-pinene dimerization product is about 42.0MJ / kg

Method used

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  • Pinene cyclopropane compound as well as preparation method and application thereof
  • Pinene cyclopropane compound as well as preparation method and application thereof
  • Pinene cyclopropane compound as well as preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] Embodiment 1: the preparation of pinene cyclopropane compound

[0025] method one:

[0026] Add 4.904g of zinc powder and 81.702mL of ethylene glycol dimethyl ether to a 150mL three-necked flask in sequence, and raise the temperature to reflux; then add 0.075mol of α-pinene or β-pinene dropwise, and finally slowly add 6.175mL of Diiodomethane reagent, stirred for 3 hours to get the crude product containing pinene cyclopropane compound. The result is: if what added is α-pinene, then the content of α-pinene cyclopropane compound is 31.4wt%, and remaining 68.6wt% is unreacted α-pinene; If what add is β-pinene ene, the content of β-pinene cyclopropane compound is 73.5wt%, and the remaining 26.5wt% is unreacted β-pinene.

[0027] Method Two:

[0028] (1) Preparation of zinc carbenes

[0029] in N 2 Atmosphere, at -15°C, add 15mL of CH 2 Cl 2 , 15mL of ZnEt 2 (15mmol) reagent, and CF containing 15mmol 3 CH of COOH 2 Cl 2 Solution 15mL, stirred for 20min; continue t...

Embodiment 2-18

[0036] Embodiment 2-18 reaction steps are the same as embodiment 1, difference is reaction conditions.

[0037] Method one includes: reaction time, reaction concentration, organic solvent type, halogenated hydrocarbon type and the molar ratio of pinene and zinc carbene; Method two includes: zinc carbene synthesis temperature, cyclopropanation reaction temperature, reaction time and molar ratio etc. As shown in Table 1.

[0038] Table 1 Example 2-18

[0039]

[0040] The mixture obtained in Examples 2-18 can be used as aerospace fuel after separation and purification or compounded with other high-density aerospace fuels to improve the performance of aerospace fuels.

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Abstract

The invention discloses a pinene cyclopropane compound, which has the following structure as described in the specification named as 2, 7, 7-trimethyl tricyclo[4.1.1.0<2,4>]octane, or thestructure as described in the specification named as 6,6-dimethylspiro[bicyclo[3.1.1]heptane-2, 1'-cyclopropane]. The invention also discloses a preparation method and application of the pinene cyclopropane compound.

Description

technical field [0001] The invention belongs to the technical field of new aerospace fuels, and in particular relates to a pinene cyclopropane compound, a preparation method thereof, and an application for aerospace liquid hydrocarbon fuels with high density, high calorific value, and high specific impulse. Background technique [0002] As the most important propulsion method for aerospace vehicles, chemical propulsion is to convert the chemical energy of the fuel itself into the power source of the aircraft. Under the condition of a certain volume of the fuel tank, the higher the density and volume calorific value of the fuel, the higher the heat released after the fuel is fully burned per unit volume. Therefore, the use of high-density and high-volume calorific value fuel can reduce the volume of the fuel tank, realize the miniaturization of the aircraft, and increase the payload. [0003] As the main component of turpentine, pinene has a bridged ring structure and a rela...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C07C13/605C07C2/86C10L1/04
CPCC07C13/605C10L1/04C07C2603/62
Inventor 邹吉军刘亚坤潘伦张香文
Owner TIANJIN UNIV
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