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Citrazinic acid lead-zirconium double metal salts and preparation method and application thereof

A technology of lead citrazinate and bimetallic salt, which is applied in the field of lead zirconium citrazine bimetallic salt and its preparation and application, can solve the problem of high frequency oscillation instability, low melting point, and cannot meet the needs of new solid advancement and development, etc. problem, to achieve the effect of improving catalytic effect and simple synthesis process

Inactive Publication Date: 2014-03-19
XIAN MODERN CHEM RES INST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Lead compounds such as lead resolate, lead salicylate, and lead stearate are the most important catalysts for the practical application of double-base propellants. However, with the continuous development of missile technology, the current combustion catalysts can no longer meet the needs of new solid materials. Advance the need for development
[0004] In addition, the most widely used unstable combustion inhibitors are aluminum powder and Al 2 o 3 Although the addition of aluminum powder solves the problems of low propellant energy and high-frequency oscillation and unstable combustion, aluminum powder participates in the combustion reaction when the propellant burns, which adversely affects the ballistic performance of the engine. The tail of the tube produces a very thick plume, which is inconsistent with the low signature of the propellant required by modern weapons
And Al 2 o 3 Due to its low melting point, it is easy to condense with catalysts such as PbO and CuO to form large particles during combustion, which not only affects the catalytic efficiency of the catalyst, but also affects the inhibition efficiency of unstable combustion.

Method used

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  • Citrazinic acid lead-zirconium double metal salts and preparation method and application thereof
  • Citrazinic acid lead-zirconium double metal salts and preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] Example 1 Preparation of lead zirconium citracinate bimetallic salt

[0024] (1) Weigh 2.7g (0.01mol) of zirconyl nitrate and dissolve in 30mL of deionized water to prepare an aqueous solution of zirconyl nitrate; weigh 3.1g (0.02mol) of citrazine acid in 200mL of deionized water and add 1.7g (0.02mol) Sodium bicarbonate dissolved into a clear solution;

[0025] (2) Weigh 3.31g (0.01mol) of lead nitrate and dissolve it in 50mL deionized water to form a solution, add it to the sodium citrate solution, stir and mix uniformly, heat up to 50°C, and react for 2h;

[0026] (3) Weigh 1.6g (0.04mol) of sodium hydroxide and dissolve it in 20mL of deionized water, add it to the lead sodium citrate solution of step (2), react for 0.5h, and add the nitrate prepared in step (1) The zirconium aqueous solution was heated to 70°C to react for 3 hours, then cooled and left standing. The precipitate was washed with deionized water, filtered, and dried to obtain 5.91 g of black lead-zirconium c...

Embodiment 2

[0036] Example 2 Preparation of lead zirconium citracinate bimetallic salt

[0037] (1) Weigh 2.7g (0.01mol) of zirconyl nitrate dissolved in 30mL of deionized water to prepare an aqueous solution of zirconyl nitrate; weigh 3.1g (0.02mol) of citrazine acid in 200mL of deionized water and add 1.1g (0.01mol) Sodium carbonate is dissolved into a clear solution;

[0038] (2) Weigh 3.31g (0.01mol) of lead nitrate and dissolve it in 50mL deionized water to form a solution, add it to the sodium citrate solution, stir and mix uniformly, heat up to 60°C, and react for 2h;

[0039] (3) Weigh 2.3g (0.04mol) of potassium hydroxide and dissolve it in 20mL of deionized water, add it to the lead sodium citrate solution of step (2), react for 0.5h, and add the nitrate oxygen prepared in step (1) The zirconium aqueous solution was heated to 80°C to react for 4 hours, then cooled and left standing. The precipitate was washed with deionized water, filtered, and dried several times to obtain 5.82g of b...

Embodiment 3

[0040] Example 3 Preparation of lead zirconium citracinate bimetallic salt

[0041] (1) Weigh 2.7g (0.01mol) of zirconyl nitrate dissolved in 30mL of deionized water to prepare an aqueous solution of zirconyl nitrate; weigh 3.1g (0.02mol) of citrazine acid in 200mL of deionized water and add 1.1g (0.01mol) Sodium carbonate is dissolved into a clear solution;

[0042] (2) Weigh 3.32g (0.01mol) of lead nitrate and dissolve it in 50mL deionized water to form a solution, add it to the sodium citrate solution, stir and mix uniformly, heat up to 70°C, and react for 2h;

[0043] (3) Weigh 2.3g (0.04mol) of potassium hydroxide and dissolve it in 20mL of deionized water, add it to the lead sodium citrate solution of step (2), react for 0.5h, and add the nitrate oxygen prepared in step (1) The zirconium aqueous solution was heated to 70°C to react for 3 hours, then cooled and stood still. The precipitate was washed with deionized water, filtered, and dried to obtain 5.75g of black lead-zircon...

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Abstract

The invention discloses a citrazinic acid lead-zirconium double metal compound shown in a structural formula (I). Uniform and new ecological lead and oxide thereof generated by decomposition can be used as main catalytic active components when the citrazinic acid lead-zirconium double metal compound is applied as a combustion catalyst and a combustion stabilizer, and zirconium dioxide with a high melting point generated by decomposition is taken as a cocatalyst. Thus, the catalytic effect can be further improved.

Description

Technical field [0001] The invention relates to a lead-zirconium citracinate bimetallic salt and a preparation method and application thereof. The bimetallic salt can be used as a bifunctional ballistic modifier of a solid propellant, that is, a combustion catalyst and a combustion stabilizer (also called unstable combustion inhibitor). Agent). technical background [0002] In terms of improving the combustion performance of double-base propellant or modified double-base propellant formulations, the current commonly used method is to adjust the burning rate and pressure index of the propellant by adding some metal salts as a combustion catalyst. The addition amount is generally mass fraction 1%-5%. [0003] Lead compounds such as lead resorate, lead salicylate, lead stearate, etc. are the most important catalysts for the practical application of bi-base propellants. However, with the continuous development of missile technology, the current combustion catalysts can no longer meet ...

Claims

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Application Information

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IPC IPC(8): C07D213/79C07D213/803B01J23/14C06D5/00
CPCC06D5/10C07D213/79C07D213/803B01J21/066B01J23/14B01J35/393
Inventor 赵凤起汪营磊仪建华裴庆姚二岗姬月萍谭艺陈斌梁勇刘卫孝
Owner XIAN MODERN CHEM RES INST
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