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Preparation method of high-specific surface nanometer magnesium ferrite catalyst material capable of being used in solid propellant

A solid propellant, high specific surface technology, applied in nanotechnology for materials and surface science, chemical instruments and methods, physical/chemical process catalysts, etc., can solve problems such as difficult promotion and application, cumbersome operation, and high cost , to achieve the effects of easy large-scale production, simple process and good crystallinity

Active Publication Date: 2015-02-18
南京美材科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although this method overcomes the disadvantages of existing high-temperature and high-pressure chemical reactions, expensive equipment, high cost, and heavy pollution, the process is cumbersome to operate and is not easy to popularize and apply.

Method used

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  • Preparation method of high-specific surface nanometer magnesium ferrite catalyst material capable of being used in solid propellant
  • Preparation method of high-specific surface nanometer magnesium ferrite catalyst material capable of being used in solid propellant
  • Preparation method of high-specific surface nanometer magnesium ferrite catalyst material capable of being used in solid propellant

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033] Dissolve 0.01mol ferric nitrate and 0.005mol magnesium nitrate in 100ml distilled water, add appropriate amount of glycine (molar ratio of glycine / metal salt Gly / M=[1, 2.5 or 3]:1) to form a mixed solution. Place it on a magnetically controlled temperature heater and react at 60°C for 2h. Raise the temperature to 110°C and evaporate the solution. After the evaporation is complete, the resulting gel will expand, and then release gas, and a self-propagating combustion reaction will occur to form a loose powder. The product was washed with hot deionized water and absolute ethanol, and filtered. Finally, dry at 60°C to obtain the final product. According to the XRD analysis of the product, the optimal dosage of glycine is 0.0375 mol (Gly / M=2.5).

Embodiment 2

[0035] Dissolve 0.01 mol of ferric nitrate and 0.005 mol of magnesium nitrate in 100 ml of distilled water, add 0.0375 mol of glycine and an appropriate amount of KCl (the molar ratio of KCl / metal salt KCl / M=2 / [3, 1 or 2]) to form a mixed solution. Place it on a magnetically controlled temperature heater and react at 60°C for 2h. Raise the temperature to 110°C and evaporate the solution. After the evaporation is complete, the resulting gel will expand, and then release gas, and a self-propagating combustion reaction will occur rapidly to form a loose powder. The product was washed with hot deionized water and absolute ethanol, and filtered. Finally, dry at 60°C to obtain the final product. According to the XRD analysis of the product, the optimal amount of KCl is 0.01 mol (KCl / M=2 / 3).

Embodiment 3

[0037] Dissolve 0.01mol ferric nitrate and 0.005mol magnesium nitrate in 100ml distilled water, add 0.0375mol glycine and appropriate amount of NaCl (NaCl / metal salt molar ratio NaCl / M=2 / [3, 1 or 2]) to form a mixed solution. Place it on a magnetically controlled temperature heater and react at 60°C for 2h. Raise the temperature to 110°C and evaporate the solution. After the evaporation is complete, the resulting gel will expand, and then release gas, and a self-propagating combustion reaction will occur rapidly to form a loose powder. The product was washed with hot deionized water and absolute ethanol, and filtered. Finally, dry at 60°C to obtain the final product. Through XRD analysis of the product, it was determined that the optimal amount of NaCl was 0.015 mol (NaCl / M=1).

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Abstract

The invention discloses a preparation method of a high-specific surface nanometer magnesium ferrite catalyst material capable of being used in a solid propellant, relating to the field of nanometer material synthesis and high-energy solid propellants. The preparation method comprises the following steps: dissolving an inorganic iron salt and an inorganic magnesium salt in distilled water, adding glycine and an inert inorganic salt, reacting at a temperature of 45-75 DEG C to form a wet sol, raising the temperature to 95-125 DEG C to evaporate a solution after reaction, rapidly performing self-propagating combustion reaction on dried gel obtained after the wet gel is completely evaporated so as to generate powder, washing and drying the dry powder to obtain the nanometer MgFe2O4 catalyst material. The prepared high-specific surface nanometer magnesium ferrite catalyst material is high in catalysis activity; the preparation method is simple and controllable in process, free from pollution, and low in cost, thereby having great application prospect in the field of solid propellants; the high-specific surface nanometer magnesium ferrite catalyst material is easily produced in a large scale.

Description

technical field [0001] The invention relates to the field of high-energy solid propellants, in particular to a high specific surface area nano-magnesium ferrite (MgFe 2 o 4 ) Synthetic method of catalyst material. Background technique [0002] Solid propellant is the power source material of rocket motor and plays an important role in the development of missile and aerospace technology. Ammonium perchlorate (AP) is a commonly used high-energy component in composite solid propellants, and the combustion characteristics of propellants are closely related to their thermal decomposition characteristics. Regulating the combustion performance of propellants with nano-catalysts has become a research hotspot. Among them, composite metal oxides have attracted much attention at home and abroad because of their excellent catalytic performance on the thermal decomposition of AP. [0003] Nano Magnesium Ferrite (MgFe 2 o 4 ) as a composite oxide with a spinel structure has achieved...

Claims

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Application Information

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IPC IPC(8): B01J23/745C01G49/00C06D5/04B82Y30/00
Inventor 张小娟郝凌云魏智勇罗容连胡锦阳顾晓倩朱锴
Owner 南京美材科技有限公司
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