Pentazole lead composite salt and preparation method thereof

A technology of lead pentazole and compound salt, which is applied in the field of solid propellant combustion catalysis, can solve the problems that the catalyst does not contain energy and the propellant combustion performance is greatly affected, and achieves the effect of excellent detonation performance

Active Publication Date: 2021-08-20
NANJING UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Combustion catalysts commonly used in solid propellants mainly include oxides of copper, lead, iron, titanium, tin, chromium, etc. or their organic salts, but most of these catalysts do not contain energy. Combustion performance is greatly affected

Method used

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  • Pentazole lead composite salt and preparation method thereof
  • Pentazole lead composite salt and preparation method thereof
  • Pentazole lead composite salt and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] Example 1: Disperse 0.5 mmol of silver pentazole as a solid in 5 mL of deionized water at 5°C, add 0.5 mmol of lead chloride aqueous solution thereto, stir ultrasonically at 10°C for 1 hour, and then filter to obtain an aqueous solution of lead pentazole; Add 0.1 mmol of lead nitrate solid to the aqueous solution of lead pentazole, stir at room temperature for 0.5 h, take the clear liquid after filter membrane filtration and place it in a constant temperature and humidity box, set the temperature at 40°C, and set the humidity at 15%, so that the solvent evaporates quickly until The solvent is evaporated to 1 / 2, and then the temperature is set to 15°C, the humidity is 60%, and the solvent is slowly evaporated to obtain Pb 12 (N 5 ) 20 (NO 3 ) 4 (H 2 O) 41 Crystal 120mg.

Embodiment 2

[0032]Example 2: Disperse 0.5 mmol of silver pentazole as a solid in 5 mL of deionized water at 30° C., add 0.5 mmol of lead sulfate in water, stir ultrasonically at 30° C. for 1 hour, and then filter to obtain an aqueous solution of lead pentazole; Add 0.1 mmol lead nitrate solid to the pentazole lead aqueous solution, stir at room temperature for 0.5 h, take the clear liquid after filter membrane filtration and place it in a constant temperature and humidity box, set the temperature at 60°C, and set the humidity at 15%, so that the solvent evaporates quickly until the solvent Volatilize to 1 / 2, then set the temperature to 15°C and humidity to 60% to slowly evaporate the solvent to obtain Pb 12 (N 5 ) 20 (NO 3 ) 4 (H 2 O) 41 Crystal 100mg.

Embodiment 3

[0033] Example 3: Disperse 0.5 mmol of silver pentazole as a solid in 5 mL of deionized water at 25° C., add 0.42 mmol of lead chloride aqueous solution thereto, stir ultrasonically at 25° C. for 10 h, and then filter to obtain an aqueous solution of lead pentazole; Add 0.15 mmol of lead nitrate solid to the aqueous solution of lead pentazole, stir at room temperature for 3 hours, take the clear liquid after filtration through a filter membrane and place it in a constant temperature and humidity chamber, set the temperature at 50°C, and set the humidity at 15%, so that the solvent evaporates quickly until the solvent Volatilize to 1 / 2, then set the temperature to 15°C and humidity to 60% to slowly evaporate the solvent to obtain Pb 12 (N 5 ) 20 (NO 3 ) 4 (H 2 O) 41 Crystal 135mg.

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Abstract

The invention discloses pentazole lead composite salt and a preparation method thereof. The molecular formula of the pentazole lead composite salt is Pb12H82N104O53, and the pentazole lead composite salt has a three-dimensional coordination polymer structure. The method comprises the following steps: preparing a pentazole lead solution; conducting a reaction for synthesizing of a composite salt; and volatilizing the solvent to synthesize the Pb12(N5)20(NO3)4(H2O)41 crystal. The pentazole lead composite salt provided by the invention is a stable existence form of pentazole lead, has the advantages of simple preparation method, good stability, zero oxygen balance and the like, and can be used as a solid propellant combustion catalyst.

Description

technical field [0001] The present invention relates to a kind of pentazole compound salt Pb 12 (N 5 ) 20 (NO 3 ) 4 (H 2 O) 41 The invention and a preparation method thereof belong to the technical field of solid propellant combustion catalysis. Background technique [0002] Modern warfare puts forward higher requirements for the flight speed of various missiles and rockets. Therefore, as the power source of missiles and rocket engines, the performance of propellants directly affects the combat and survivability of related weapons. At present, the use of burning rate modifiers to improve the combustion performance of propellants has been extensively studied. On the premise of ensuring the stable operation of the engine, it is hoped that the wide range adjustment of the propellant burning rate and the characteristics of low pressure index can be realized by adding a combustion catalyst. Combustion catalysts commonly used in solid propellants mainly include oxides of c...

Claims

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Application Information

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IPC IPC(8): C08G83/00C06B23/00C06B43/00C06D5/06
CPCC08G83/008C06B23/007C06B43/00C06D5/06
Inventor 陆明许元刚袁媛王鹏程林秋汉
Owner NANJING UNIV OF SCI & TECH
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