Catalyst for catalytic decomposition of n2o monopropellant and its preparation method and application

Abstract

The invention relates to a catalyst for catalytic decomposition of N2O monopropellant and its preparation and application. It is a hexaaluminate with a molecular formula of BaIrxFe1-xAl11O19 or SrIrxMn1-xAl11O19, x represents the substitution amount of iridium as an active material, and the mass percentage of iridium in the hexaaluminate is 5%. The catalyst prepared by applying this method can realize the catalytic decomposition of nitrous oxide single-component propellant at low temperature, and can withstand the high-temperature and high-oxygen gas generated by the decomposition of nitrous oxide. The catalytic decomposition of the agent has high activity, high stability and repeated starting performance.

Description

for N 2 Catalyst for the catalytic decomposition of O monopropellant and its preparation method and application technical field What the present invention relates to is a kind of propellant (Nitrousoxide) for nitrous oxide monopropellant monopropellant) catalytic decomposition of new hexaaluminate catalysts and their preparation and application. Catalysts prepared by this method The oxidizing agent can make the nitrous oxide single-component propellant realize catalytic decomposition at a relatively low temperature (300 ° C ~ 350 ° C), and And it can withstand the high temperature (1000℃~1400℃) high-oxygen gas produced by the decomposition of nitrous oxide. The catalytic decomposition of the meta-propellant has high activity, high stability and repeated starting performance. Applicable to gas generators, aircraft attitude control etc. Background technique [0002] New types of small satellites require advanced propulsion systems. Such a system should meet th...

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Problems solved by technology

Catalytic decomposition of dinitrogen at low temperature conditions, such as spinels, molecular sieves, etc., but these catalysts cannot tolerate dinitrogen

hair, resulting in a significant reduction in catalyst activity, can not continue to use

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