Space molecular pollutant adsorption material and preparation method thereof

Abstract

The invention discloses a space molecular pollutant adsorption material and a preparation method thereof, relates to an adsorption material and a preparation method thereof, and aims to solve the technical problem that the absorption rate of an existing absorption material applied to a spacecraft is low. In the material disclosed by the invention, a spherical 5A zeolite molecular sieve is taken asa core, and the surface of the molecular sieve is coated with an Al2O3 film. The preparation method is that: the spherical 5A zeolite molecular sieve is placed in an atomic layer deposition apparatus, and an aluminum source and a water source are alternately injected in a chamber to deposit and grow an atomic layer periodically in nitrogen at a temperature of 150-180 DEG C, and the Al2O3 film isdeposited on the surface of the molecular sieve to obtain the space molecular pollutant adsorption material. The adsorption amount of the material to organic gases such as organosiloxane, methane andn-butene is 10 to 15 mg.g<-1>, and the material can be applied to the fields such as in-orbit operation pollution control, indoor air purification, petrochemical catalytic degradation, vehicle exhaustemission, metallurgical industry, and agricultural environmental protection.

Description

technical field [0001] The present invention relates to an adsorber and a method for its preparation. Background technique [0002] After the spacecraft enters orbit, it is in a high-vacuum environment. Most of the organic non-metallic materials used on it, such as packaging materials, adhesives, sealants, insulating materials, rubber gaskets, inks and marking inks, thermal control coatings, Composite materials, etc. will release some volatile gas molecules in a vacuum state, such as the H adsorbed by the material 2 O, CO 2 As well as volatile additives, solvents, low molecular weight components, incompletely cured molecular segments, etc. in the material, this is called the vacuum outgassing effect of spacecraft materials. In recent years, the impact of pollution on satellites has received more and more attention. Due to the long life of the satellite and the high-performance devices of the payload, the requirements for pollution control are getting higher and higher, su...

AI Technical Summary

Problems solved by technology

[0004] The present invention aims to solve the technical problem of low absorption rate of the existing absorbent materials used in spacecraft, and provides a space molecular pollutant adsorption material and its preparation method and application

Images