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Composite fuel, preparation method thereof and propellant containing composite fuel

A composite fuel, organic framework technology, used in offensive equipment, compressed gas generation, explosives, etc., can solve problems such as need for improvement, rapid deactivation of fuel, etc., achieve optimal combustion performance, reduce two-phase flow loss, and inhibit particle agglomeration Effect

Active Publication Date: 2022-03-25
TIANJIN UNIV +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] However, during the combustion process of the fuel obtained by improving boron using the current method, the formation of liquid boron oxide will also coat the surface of the fuel and rapidly deactivate the fuel
Thus, current boron-containing fuels still need to be improved

Method used

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  • Composite fuel, preparation method thereof and propellant containing composite fuel
  • Composite fuel, preparation method thereof and propellant containing composite fuel
  • Composite fuel, preparation method thereof and propellant containing composite fuel

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preparation example Construction

[0062] In another aspect of the present invention, the present invention provides a method for preparing the aforementioned composite fuel, comprising: coating a metal-organic framework on at least part of the surface of boron particles, wherein the metal-organic framework comprises a cobalt metal-organic At least one of a framework, a zinc metal organic framework, and a molybdenum metal organic framework. Therefore, the above method for preparing the composite fuel is simple, convenient and easy to implement.

[0063] It should be noted that the boron particles and the metal-organic framework are consistent with the previous description, and will not be repeated here.

[0064] In some embodiments of the present invention, the preparation method of composite fuel comprises:

[0065] S100: Adsorb metal ions on at least part of the surface of the boron particles to obtain an intermediate.

[0066] It should be noted that the metal ions include at least one of cobalt ions, zinc...

Embodiment 1

[0092] The preparation method of composite fuel comprises the steps:

[0093] (1) Add 200mg of micron boron powder (aB, particle size 1-10μm) and 100mg of polyvinylpyrrolidone into a 250ml round bottom flask, add 150ml of methanol, and ultrasonically disperse for 30 minutes to make it evenly mixed. Under 30°C oil bath and magnetic stirring, react for 12h. Add 25ml of methanol solution containing 7.5mmol of zinc nitrate and stir for 12h. Add 25ml of methanol solution containing 15mmol 2-methylimidazole and react for 1h. The obtained product was washed with methanol and centrifuged three times, then placed in a vacuum oven, dried at 50 °C for 6 h after vacuuming, and the composite fuel (labeled as aB@Zn-MOF) was obtained after grinding. (In this embodiment, the quality of the metal organic framework accounts for 14wt% of the boron powder mass.)

Embodiment 2

[0095] The preparation method of composite fuel comprises the steps:

[0096] (1) Add 200mg of micron boron powder (aB, particle size 1-10μm) and 100mg of polyvinylpyrrolidone into a 250ml round bottom flask, add 150ml of methanol, and ultrasonically disperse for 30 minutes to make it evenly mixed. Under 30°C oil bath and magnetic stirring, react for 12h. Add 25ml of methanol solution containing 7.5mmol of cobalt nitrate and stir for 12h. Add 25ml of methanol solution containing 15mmol 2-methylimidazole and react for 1h. The obtained product was washed with methanol and centrifuged three times, then placed in a vacuum oven, dried at 50 °C for 6 h after vacuuming, and the composite fuel (labeled as aB@Co-MOF) was obtained after grinding. (In this embodiment, the quality of the metal-organic framework accounts for 12wt% of the mass of the boron powder.)

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Abstract

The invention provides a composite fuel, a preparation method thereof and a propellant containing the composite fuel. Wherein the composite fuel comprises boron particles; the metal organic framework coats at least part of the surfaces of the boron particles; wherein the metal organic framework comprises at least one of a cobalt metal organic framework, a zinc metal organic framework and a molybdenum metal organic framework. The inventor finds that the metal organic framework has a relatively low ignition temperature, a large amount of gas can be generated in a combustion process, liquid boron oxide on the surfaces of boron particles can be removed, and the generated gas can also effectively inhibit particle aggregation and reduce two-phase flow loss at the same time; meanwhile, the generated metal oxide can continue to catalyze the combustion of the boron particles and reduce the ignition temperature of the boron particles, so that the ignition temperature of the boron particles can be effectively reduced and the combustion heat value of the composite fuel can be improved by introducing the metal organic framework, and the composite fuel has better combustion performance.

Description

technical field [0001] The invention relates to the field of chemical industry, in particular to composite fuel, its preparation method and propellant containing it. Background technique [0002] Boron has extremely high melting and boiling points, and its combustion is essentially a heterogeneous reaction process. During the combustion process, viscous liquid boron oxide will be produced to hinder the further combustion of boron, resulting in difficulty in the ignition of boron and reducing its combustion efficiency. Therefore, improving the ignition and combustion properties of boron is the key issue to realize the industrial application of boron. [0003] However, during the combustion process of the fuel obtained by improving boron with the current method, the generation of liquid boron oxide will also coat the surface of the fuel and deactivate the fuel rapidly. Thus, current boron-containing fuels still need to be improved. [0004] In view of this, the present inven...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C06B33/04C06B33/00C06D5/06C10L11/00
CPCC06B33/04C06B33/00C06D5/06C10L11/00
Inventor 潘伦邹吉军李智欣薛康张香文邵文清
Owner TIANJIN UNIV