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A kind of vanadium-carbon composite combustion catalyst for propellant and preparation method thereof

A technology for burning catalysts and complexes, which is used in offensive equipment, non-explosive/non-thermal components, explosives, etc., to achieve the effects of high safety, environmentally friendly catalytic activity, and precisely adjustable loading

Active Publication Date: 2021-10-01
XIAN MODERN CHEM RES INST
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0006] The present invention proposes a vanadium-carbon composite combustion catalyst for propellants and a preparation method thereof to solve the technical problem of how to prepare a vanadium-carbon composite combustion catalyst for propellants

Method used

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  • A kind of vanadium-carbon composite combustion catalyst for propellant and preparation method thereof
  • A kind of vanadium-carbon composite combustion catalyst for propellant and preparation method thereof
  • A kind of vanadium-carbon composite combustion catalyst for propellant and preparation method thereof

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Embodiment 1

[0038] This embodiment proposes a vanadium-carbon composite combustion catalyst for propellants and a preparation method thereof. The carbon-based base material used is carbon airgel microspheres (CarbonAerogel Spheres, CAS). The preparation method specifically includes the following steps:

[0039] Step 1. Spread the carbon airgel microspheres in the reaction chamber of the atomic layer deposition equipment, install a quartz crystal microbalance at the outlet of the reaction chamber and seal the outlet;

[0040] Step 2, heating the atomic layer deposition reaction chamber and vanadyl triisopropoxy (VO(OC) respectively by an electric heating mantle 3 h 7 ) 3 ) hold the container so that its temperature is respectively at 150°C and 50°C;

[0041] Step 3. Nitrogen gas with a flow rate of 60 sccm is passed into the reaction chamber from the entrance of the reaction chamber of the atomic layer deposition equipment, and a mechanical vacuum pump is used to pump air at the outlet o...

Embodiment 2

[0055] This embodiment proposes a vanadium-carbon composite combustion catalyst for propellants and a preparation method thereof. The carbon-based base material used is reduced graphene (rGO). The preparation method specifically includes the following steps:

[0056] Step 1, tile the reduced graphene in the reaction chamber of the atomic layer deposition equipment;

[0057] Step 2. Heat the atomic layer deposition reaction chamber and the vanadyl acetylacetonate (VO(acac) 2 ) containers at temperatures of 300°C and 150°C, respectively;

[0058] Step 3. Nitrogen gas with a flow rate of 80 sccm is passed into the reaction chamber from the entrance of the reaction chamber of the atomic layer deposition equipment, and a mechanical vacuum pump is used to pump air at the outlet of the reaction chamber of the atomic layer deposition equipment, so that the vacuum degree in the reaction chamber is at 120Pa;

[0059] Step 4, the VO(acac) 2 Molecules are injected into the reaction cham...

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Abstract

The present invention proposes a vanadium-carbon composite combustion catalyst for propellants and a preparation method thereof. The preparation method mainly includes exposing a carbon-based substrate to vanadium source vapor so that vapor molecules are adsorbed on the surface of the carbon-based substrate; The vanadium source molecules physically adsorbed on the surface are blown away; the carbon-based substrate is exposed to the vapor of the oxidant, so that the vapor molecules and the adsorbed vanadium source molecules undergo a redox reaction; the excess oxidant vapor molecules on the surface of the carbon-based substrate are blown away by an inert carrier gas blow away. The vanadium-carbon composite combustion catalyst prepared by the present invention has the characteristics of highly dispersed vanadium oxide on the surface of the carbon-based substrate, precisely adjustable vanadium oxide loading, precise and controllable composite structure, environmental friendliness, and high catalytic activity. The layer deposition preparation process has a high degree of automation and good safety performance. The product can be used directly without post-processing, and it is easy to realize mass production.

Description

technical field [0001] The invention belongs to the technical field of powder catalyst and its preparation, and in particular relates to a vanadium-carbon composite combustion catalyst for a propellant and a preparation method thereof. Background technique [0002] Combustion catalysts, also known as burning rate modifiers, change the burning rate by changing the combustion wave structure of the propellant. Different from industrial propellants, combustion catalysts are substances that chemically change the burning rate of propellants. In the process of combustion catalysis, the structure of combustion catalysts can change. Its main function is to change the chemical properties of propellants during low-pressure combustion. Reaction speed, reducing the degree to which the propellant burning rate is affected by pressure and temperature, improving the ignition performance of the propellant, improving the combustion stability of the propellant and adjusting the burning rate of ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C06B23/00
CPCC06B23/007
Inventor 冯昊李建国秦利军龚婷张王乐惠龙飞李丹
Owner XIAN MODERN CHEM RES INST
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