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A method for the efficient catalytic decomposition of ammonium perchlorate based on the energetic complex [mn(bto)(h2o)2]n

An ammonium perchlorate, catalytic decomposition technology, applied in the direction of organic compound/hydride/coordination complex catalyst, ammonium perchlorate composition, organic chemical method, etc., can solve problems such as loss of propellant, reduce decomposition Temperature, shorter ignition delay, simple and reliable method

Active Publication Date: 2018-11-09
INST OF CHEM MATERIAL CHINA ACADEMY OF ENG PHYSICS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the metal oxide itself does not contain energy, and its addition will lose the ability of the propellant. Therefore, in recent years, the development of energetic ammonium perchlorate catalysts has become a hot topic.

Method used

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  • A method for the efficient catalytic decomposition of ammonium perchlorate based on the energetic complex [mn(bto)(h2o)2]n
  • A method for the efficient catalytic decomposition of ammonium perchlorate based on the energetic complex [mn(bto)(h2o)2]n

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0043]Accurately weigh 1.0g ammonium perchlorate and 0.03g [Mn(BTO)(H 2 O) 2 ] n , that is, the mass ratio of catalyst to ammonium perchlorate is 3%. Mix the above two samples evenly and grind them into fine powder with an agate mortar. The grinding time should not be less than 20 minutes. After the sample is ground, it is transferred to a sample bottle and sealed for storage.

[0044] Accurately weigh about 5 mg of the dry mixed sample with a one-hundred-thousandth balance and make a quality record. Carefully transfer the fine powder to a 70-microliter alumina crucible with a cover for TG / DSC sample testing. In TG / DSC, the experimental parameters are: temperature measurement range 40-500°C; heating rate 5°C / min; nitrogen purge The test was carried out at a rate of 40 mL / min. Test result obtains that the ammonium perchlorate decomposition temperature of this method is 275.

Embodiment 2

[0046] Accurately weigh 1.0g of ammonium perchlorate and 0.01g of [Mn(BTO)(H 2 O) 2 ] n , that is, the mass ratio of catalyst to ammonium perchlorate is 1%. Mix the above two samples evenly and grind them into fine powder with an agate mortar. The grinding time should not be less than 20 minutes. After the sample is ground, it is transferred to a sample bottle and sealed for storage.

[0047] Accurately weigh about 5 mg of the dry mixed sample with a one-hundred-thousandth balance and make a quality record. Carefully transfer the fine powder to a 70-microliter alumina crucible with a cover for TG / DSC sample testing. In TG / DSC, the experimental parameters are: temperature measurement range 40-500°C; heating rate 5°C / min; nitrogen purge The test was carried out at a rate of 40 mL / min. The test results show that the ammonium perchlorate decomposition temperature of this method is 301°C.

Embodiment 3

[0049] Accurately weigh 1.0g ammonium perchlorate and 0.02g [Mn(BTO)(H 2 O) 2 ] n , that is, the mass ratio of catalyst to ammonium perchlorate is 2%. Mix the above two samples evenly and grind them into fine powder with an agate mortar. The grinding time should not be less than 20 minutes. After the sample is ground, it is transferred to a sample bottle and sealed for storage.

[0050] Accurately weigh about 5 mg of the dry mixed sample with a one-hundred-thousandth balance and make a quality record. Carefully transfer the fine powder to a 70 microliter alumina crucible with a cover for TG / DSC sample testing. The TG / DSC experimental parameters are: temperature measurement range 40-500°C; heating rate 5°C / min; nitrogen purge The test was carried out at a rate of 40 mL / min. The test result shows that the ammonium perchlorate decomposition temperature of this method is 297°C.

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Abstract

The invention discloses a method for efficiently catalytically decomposing ammonium perchlorate based on energetic complex [Mn(BTO)(H2O)2]n. The method comprises mixing an energetic complex [Mn(BTO)(H2O)2]n and ammonium perchlorate according to a certain ratio and grinding; and putting the ground mixture in a nitrogen environment and reacting at 270-305 DEG C for 5-10 min. The employed catalyst [Mn(BTO)(H2O)2]n has extremely good catalytic decomposition effect on ammonium perchlorate, and is capable of greatly reducing the decomposition temperature, and control on decomposition temperature of ammonium perchlorate is realized by changing the addition amount of the catalyst. The method is simple and reliable, hopefully, the burning rate of spaceflight propellants can be improved, and the firing delay can be shortened.

Description

technical field [0001] The invention relates to the field of energetic materials, in particular to an energy-containing complex [Mn(BTO)(H 2 O) 2 ] n A method for highly efficient catalytic decomposition of ammonium perchlorate. Background technique [0002] Ammonium perchlorate is a white crystal with deliquescence. Ammonium perchlorate is a strong oxidizing agent. It will explode when mixed with reducing agents, organic substances, combustible substances such as sulfur, phosphorus or metal powder. Contact with strong acid may cause fire and explosion hazard. For the system of explosives, fireworks, and used as analytical reagents. Ammonium perchlorate is the most widely used oxidant in solid rocket propellants, and its thermal decomposition characteristics have an important impact on the combustion process of propellants. The study found that the activation energy, rate, and pyrolysis temperature of ammonium perchlorate thermal decomposition are closely related to t...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C06D5/00C06B29/22B01J31/22C07D257/04
CPCB01J31/1691B01J31/2243C06B29/22C06D5/00C07B2200/13C07D257/04
Inventor 张祺陈东敬东范桂娟周小清徐容郝世龙杨宗伟李洪珍
Owner INST OF CHEM MATERIAL CHINA ACADEMY OF ENG PHYSICS
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