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Carbon/metal oxide composite catalyst embedded in ammonium perchlorate and preparation method thereof

A composite catalyst, ammonium perchlorate technology, applied in catalyst activation/preparation, physical/chemical process catalysts, chemical instruments and methods, etc., can solve problems such as particle agglomeration, reduce high-temperature thermal decomposition temperature, improve apparent emission heat effect

Active Publication Date: 2019-07-19
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, although carbon-based composite catalysts exhibit better catalytic effects than single nano-metal oxides, the nanoparticles are mainly supported on the outer surfaces of carbon nanotubes and graphene, and particle agglomeration is still prone to occur during use.
There is no report on this kind of ammonium perchlorate-embedded three-dimensional ordered macroporous-mesoporous / metal oxide composite catalyst

Method used

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  • Carbon/metal oxide composite catalyst embedded in ammonium perchlorate and preparation method thereof
  • Carbon/metal oxide composite catalyst embedded in ammonium perchlorate and preparation method thereof
  • Carbon/metal oxide composite catalyst embedded in ammonium perchlorate and preparation method thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0046] Three-dimensional ordered macroporous-mesoporous carbon / Fe embedded in ammonium perchlorate 2 o 3 Composite catalyst, the metal precursor is Fe(NO 3 ) 3 9H 2 O, the content of ammonium perchlorate is 30wt%.

[0047] Get the Pluronic F127 of 1.0g to be dissolved in 14.0g dehydrated alcohol at room temperature, stir and mix with the ethanol solution (mass fraction of 20%) of the resole phenolic resin of 10.0g; (NO 3 ) 3 9H 2 O ethanol solution was dropped into the above solution, and after stirring evenly, a dark blue-black mixed solution was obtained.

[0048] The mixed solution was added dropwise on SiO with a microsphere size of 335nm 2 Immerse the colloidal crystals in the mixed solution, let stand at room temperature until the organic solvent is completely volatilized, and obtain the complex.

[0049] After the composite was thermally cured in an oven at 70 °C for 4 hours, it was heated in a tube furnace for N 2 Calcined at 600°C for 3 hours in the atmosphe...

Embodiment 2

[0053] Three-dimensional ordered macroporous-mesoporous carbon / Fe embedded in ammonium perchlorate 2 o 3 Composite catalyst, the metal precursor is Fe(NO 3 ) 3 9H 2 O, ammonium perchlorate content is 60wt%, its SEM photo is as Figure 5 shown.

[0054] Dissolve 1.0 g of Pluronic F127 in 14.0 g of absolute ethanol at room temperature, add 10.0 g of resole phenolic resin ethanol solution, and stir until uniform. Fe(NO 3 ) 3 9H 2 O ethanol solution was dropped into the above solution, and after stirring evenly, a dark blue-black mixed solution was obtained.

[0055] The mixed solution was added dropwise on SiO with a microsphere size of 335nm 2 The colloidal crystals are immersed in the solution, and left standing at room temperature until the organic solvent is completely volatilized to obtain the complex.

[0056] After the composite was thermally cured in an oven at 70 °C for 4 hours, it was heated in a tube furnace for N 2 Calcined at 600°C for 3 hours in the atmos...

Embodiment 3

[0060] Three-dimensional ordered macroporous-mesoporous carbon / Fe embedded in ammonium perchlorate 2 o 3 Composite catalyst, the metal precursor is Fe(NO 3 ) 3 9H 2 O, the content of ammonium perchlorate is 80wt%.

[0061] Get 1.0g of Pluronic F127 at room temperature and dissolve in 14.0g absolute ethanol, stir and mix with the ethanol solution of 10.0g resole phenolic resin; then molar concentration is 1.0mol / L Fe(NO 3 ) 3 9H 2 O ethanol solution was dropped into the above solution, and after stirring evenly, a dark blue-black mixed solution was obtained.

[0062] The mixed solution was added dropwise on SiO with a microsphere size of 335nm 2 Immerse the colloidal crystals in the mixed solution, let stand at room temperature until the organic solvent is completely volatilized, and obtain the complex.

[0063] After the composite was thermally cured in an oven at 70 °C for 4 hours, it was heated in a tube furnace for N 2Calcined at 600°C for 3 hours in the atmosphere...

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Abstract

The invention discloses an ammonium perchlorate embedded carbon / metallic oxide composite catalyst, and a preparation method thereof. According to the ammonium perchlorate embedded carbon / metallic oxide composite catalyst, three-dimensional ordered macroporous-mesoporous carbon is taken as a carrier material, and at the same time, the ammonium perchlorate embedded carbon / metallic oxide composite catalyst is obtained via loading of nano metallic oxide particles and ammonium perchlorate. The ammonium perchlorate embedded carbon / metallic oxide composite catalyst possesses excellent catalytic effect on thermal decomposition of ammonium perchlorate, and is capable of reducing high temperature thermal decomposition temperature of ammonium perchlorate greatly, and increasing apparent heat release greatly.

Description

technical field [0001] The invention belongs to the field of catalyst preparation of energetic materials, and in particular relates to a carbon / metal oxide composite catalyst embedded in ammonium perchlorate and a preparation method thereof. Background technique [0002] Ammonium perchlorate (NH 4 ClO 4 , AP) is the most commonly used oxidant in composite solid propellants, generally accounting for 70% to 90% of the total solid propellant. For the ammonium perchlorate composite propellant, the thermal decomposition reaction of ammonium perchlorate in the condensed phase has a significant impact on the burning rate of the propellant. The burning rate has a linear relationship, the lower the pyrolysis temperature, the shorter the ignition delay time of the propellant, and the higher the burning rate. Therefore, reducing the thermal decomposition temperature of ammonium perchlorate, especially in the high temperature stage, is an effective way to increase the burning rate of...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01J27/24B01J35/10B01J37/02
CPCB01J27/24B01J35/1066B01J37/0203B01J37/0213
Inventor 陈瑾吴鹏贺思敏黄兵张丽媛王军谯志强杨光成
Owner INST OF CHEM MATERIAL CHINA ACADEMY OF ENG PHYSICS
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