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A kind of organic small molecule gel and its preparation method and application

A small-molecule, organic technology, applied in the field of organic small-molecule gelling agents and their preparation, can solve problems such as reducing the burning rate, and achieve the effects of shortening the ignition delay, improving the burning performance, and increasing the burning rate.

Active Publication Date: 2022-05-17
TIANJIN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This indicates that gel fuels burn at a reduced rate compared to liquid fuels

Method used

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  • A kind of organic small molecule gel and its preparation method and application
  • A kind of organic small molecule gel and its preparation method and application
  • A kind of organic small molecule gel and its preparation method and application

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preparation example Construction

[0037] The present invention provides the preparation method of organic small molecule gelling agent described in above-mentioned technical scheme, comprises the following steps:

[0038] Mix D-mannitol, compounds containing high tension structures, catalysts and organic solvents for condensation reaction to obtain organic small molecule gelling agents;

[0039] The compound containing high tension structure has the structure shown in formula II or formula III:

[0040] In formula II and formula III, R includes R 1 Including -H, -CH 3 、-CH 2 CH 3 or Cl.

[0041] In the present invention, unless otherwise specified, the required preparation materials are commercially available products well known to those skilled in the art.

[0042] The invention mixes D-mannitol, a compound containing a high tension structure, a catalyst and an organic solvent to carry out condensation reaction. In the present invention, the compound containing high tension structure preferably incl...

Embodiment 1

[0054] Dissolve 9.11g (0.05mol) of D-mannitol and 6.82g (0.05mol) of zinc chloride in 100mL DMF, add 8.41g (0.15mol) of cycloacetone, and stir for 12 hours at 25°C; Add 100mL saturated sodium chloride solution and 100mL dichloromethane into the obtained system and stir for 15min, filter the obtained material and wash with 100mL dichloromethane, extract the aqueous phase with dichloromethane, combine the organic phases and wash with saturated NaCl solution, wash the obtained Anhydrous Na 2 SO 4 dry. Filter, carry out rotary evaporation, obtain organic small molecule gelling agent 5.1g, structural formula is:

[0055]

Embodiment 2

[0057] Dissolve 9.11g (0.05mol) of D-mannitol and 6.82g (0.05mol) of zinc chloride in 100mL DMF, add 10.51g (0.15mol) of cyclopropanaldehyde, and stir at 25°C for 12h; after the reaction is completed, Add 100mL saturated sodium chloride solution and 100mL dichloromethane into the obtained system and stir for 15min, filter the obtained material and wash with 100mL dichloromethane, extract the aqueous phase with dichloromethane from the obtained washed material, combine the organic phases and wash with saturated NaCl solution Washed, the resulting material was washed with anhydrous Na 2 SO 4 After drying, after filtering, rotary evaporation is carried out to obtain 6.0 g of small molecule gelling agent, and the structural formula is:

[0058]

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Abstract

The invention provides a small organic molecule gelling agent and its preparation method and application, belonging to the technical field of gel fuel. The organic small molecule gelling agent provided by the present invention contains a cyclopropane structure, and the cyclopropane structure belongs to a high-tension structure, which endows the gelling agent with excellent gel performance, and the high-tension cyclopropane structure can also greatly improve the combustion performance of the gelling agent. It can shorten the ignition delay of fuel and play a role in promoting combustion. Moreover, the multiple hydroxyl groups contained in the organic small molecule gel provided by the present invention can effectively form a gel through hydrogen bonding, so it has excellent gel performance for high energy density fuels and energetic nanofluid fuels and has shear Thinning properties, the minimum gelling agent is not higher than 1% when forming a stable gel.

Description

technical field [0001] The invention relates to the technical field of gel fuels, in particular to a small organic molecule gelling agent and its preparation method and application. Background technique [0002] In order to meet the demand for aerospace fuel, the fuel that provides power must have good combustion performance on the one hand; on the other hand, it must also have good usability performance. Gel fuel maintains a stable gel state during storage and transportation, and can become a low-viscosity liquid state after being sheared by an external force during use. This feature enables gel fuel to have the advantages of solid fuel and liquid fuel at the same time, which can effectively improve the performance of fuel. On this basis, the energy density of the fuel can be greatly increased by adding energetic metal nanoparticles (aluminum, boron, etc.) to the gel, and the storage stability of the fuel can be improved through the gel state, thereby greatly improving the...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C07D317/72C07D317/20C10L7/02
CPCC07D317/72C07D317/20C10L7/02C10L2230/22C07D407/06C07D317/08C10L2270/00C10L5/40
Inventor 潘伦邹吉军刘洋张香文
Owner TIANJIN UNIV
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