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Burning rate catalyst and preparation method thereof

A burning rate catalyst and oxide technology, which is applied in the direction of offensive equipment, non-explosive/non-thermal agent components, explosives, etc., can solve the problems that the burning rate catalyst cannot be completely solved, and the catalytic efficiency has not been maximized, etc., to achieve excellent Catalytic activity, good thermal and electrical conductivity, and mild reaction conditions

Inactive Publication Date: 2018-06-12
SOUTH UNIVERSITY OF SCIENCE AND TECHNOLOGY OF CHINA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

The composite catalyst obtained by this method is still powdery, and the reduced graphene oxide used as the carrier is also prone to agglomeration, which cannot completely solve the problem of dispersion of the burning rate catalyst in the solid fuel propellant, and the catalytic efficiency has not been maximized.

Method used

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  • Burning rate catalyst and preparation method thereof
  • Burning rate catalyst and preparation method thereof
  • Burning rate catalyst and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] Follow the steps below to prepare loaded Co 3 o 4 The graphene airgel catalyst:

[0032] 1. Add 30mg of Co with a diameter of 30nm 3 o 4 Nanoparticles were added to 10 mL of graphene aqueous solution with a concentration of 3 mg / mL and ultrasonically dispersed for 15 min. Then add 1 mL of ammonia water with a mass fraction of 25%, ultrasonically disperse for 10 min; add the obtained solution into a glass bottle with a cap, tighten the cap, put it in an oil bath, raise the temperature to 90°C, and let stand for 24 h; The load has Co 3 o 4 Cylindrical graphene hydrogels of nanoparticles.

[0033] 2. Rinse the above hydrogel several times with deionized water, then put the obtained hydrogel into 20 mL of 10% volume concentration ethanol aqueous solution, let it stand for 12 hours, and exchange the liquid in the hydrogel.

[0034] 3. Take out the above-mentioned hydrogel and put it into the freeze-drying device for 24 hours to obtain a cylindrical gel loaded with Co ...

Embodiment 2

[0037] The graphene airgel catalyst loaded with NiO was prepared according to the following steps:

[0038] 1. Add 50 mg of NiO nanoparticles with a diameter of 30 nm into 10 mL of graphene aqueous solution with a concentration of 5 mg / mL, and ultrasonically disperse for 15 min; then add 1 mL of ethylenediamine aqueous solution with a concentration of 0.1 mol / mL, and ultrasonically disperse for 10 min; The obtained solution was added into a glass bottle with a cap, the cap was tightened, put into an oil bath, heated to 80° C., and allowed to stand for 12 hours; a cylindrical graphene hydrogel loaded with NiO nanoparticles was obtained.

[0039] 2. Rinse the above hydrogel several times with deionized water, then put the obtained hydrogel into 20 mL of 10% volume concentration ethanol aqueous solution, let it stand for 12 hours, and exchange the liquid in the hydrogel.

[0040] 3. Take out the hydrogel and put it into a freeze-drying device for 24 hours to obtain a cylindrical ...

Embodiment 3

[0044] The CuO-supported graphene airgel catalyst was prepared according to the following steps:

[0045] 1. Add 50mg of CuO nanoparticles with a diameter of 40nm to 10mL of graphene aqueous solution with a concentration of 5mg / mL, ultrasonically disperse for 15min; then add 1mL of NaHSO with a concentration of 0.1mol / mL 3 Aqueous solution, ultrasonic dispersion for 10min; put the obtained solution into a glass bottle with a cap, tighten the cap, put it in an oil bath, raise the temperature to 90°C, and let it stand for 24h; obtain cylindrical graphite loaded with CuO nanoparticles Alkene hydrogel.

[0046] 2. Rinse the above hydrogel several times with deionized water, then put the obtained hydrogel into 20 mL of 10% volume concentration ethanol aqueous solution, let it stand for 12 hours, and exchange the liquid in the hydrogel.

[0047] 3. Take out the above-mentioned hydrogel and put it into a freeze-drying device for 24 hours to obtain a cylindrical graphene airgel loaded ...

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Abstract

The invention belongs to the technical field of nanometer energy materials, and discloses a novel burning rate catalyst. The burning rate catalyst is characterized in that graphene aerogel is taken asa carrier, and a metallic oxide is taken as a carried matter and is dispersed in the graphene aerogel in the form of nanoparticles. The invention further discloses a preparation method of the burningrate catalyst. The burning rate catalyst disclosed by the invention has a larger specific surface area, a larger large pore volume, high heat conductivity and high catalytic activity; transitional metallic oxide nanoparticles are uniformly dispersed inside the aerogel without aggregation; the burning rate catalyst has excellent catalytic activity. The preparation process of the catalyst is simple, and the reaction conditions are mild.

Description

technical field [0001] The invention belongs to the technical field of nanometer energy materials, and in particular relates to a novel burning rate catalyst and a preparation method thereof. Background technique [0002] Ammonium perchlorate is a commonly used solid propellant propellant oxidant, and the filling amount usually accounts for 70-90% of the entire solid propellant grain. Therefore, generally for solid propellants, the thermal decomposition performance of ammonium perchlorate has a significant impact on the burning rate of the propellant. The lower the decomposition temperature of ammonium perchlorate, the faster the burning rate of the propellant and the higher the burning rate. Reducing the thermal decomposition temperature of ammonium perchlorate can effectively improve the combustion efficiency. In the process of catalyzing the decomposition of ammonium perchlorate, the catalyst generally used is a transition metal oxide. The outer layer of metal particles ...

Claims

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Application Information

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IPC IPC(8): C06B23/00
Inventor 程化卢周广张剑桥
Owner SOUTH UNIVERSITY OF SCIENCE AND TECHNOLOGY OF CHINA
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