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Preparation method and adsorption device of molecular pollution adsorption material with self-cleaning performance and zeolite molecular sieve coated with TiO2 film layer

A technology of zeolite molecular sieve and adsorption material, applied in separation methods, chemical instruments and methods, membrane technology, etc., can solve problems affecting functions and failures, and achieve the effects of safe use, improved adsorption performance, and strong adsorption capacity

Active Publication Date: 2020-02-18
HARBIN INST OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] In order to solve the problem that the existing space molecular pollutants will condense and deposit on the surface of each sensitive element, which will affect the full play of its function and even lead to failure, it provides a TiO with self-cleaning performance. 2 Preparation method and adsorption device of molecular pollution adsorption material coated with membrane layer zeolite molecular sieve

Method used

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  • Preparation method and adsorption device of molecular pollution adsorption material with self-cleaning performance and zeolite molecular sieve coated with TiO2 film layer
  • Preparation method and adsorption device of molecular pollution adsorption material with self-cleaning performance and zeolite molecular sieve coated with TiO2 film layer
  • Preparation method and adsorption device of molecular pollution adsorption material with self-cleaning performance and zeolite molecular sieve coated with TiO2 film layer

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specific Embodiment approach 1

[0026] Specific implementation mode 1: TiO 2 Preparation of membrane-coated zeolite molecular sieve molecular pollution adsorption material

[0027] Step 1: Take 50g of spherical 5A zeolite molecular sieves with a particle size of 30nm to 50nm and place them in a tube furnace to discharge excess water vapor in the zeolite and at the same time facilitate rapid pumping during the atomic layer deposition process. The specific operation is to turn the furnace The temperature was raised to 200°C, kept warm and evacuated for 2 hours, then cooled down naturally until normal temperature was restored, and placed in a desiccator for use.

[0028] Step 2, put the ready-to-use spherical 5A zeolite molecular sieve obtained in the above steps into the deposition chamber of the atomic layer deposition instrument, and pump the deposition chamber to 5×10 -3 Torr, then nitrogen gas is introduced to the chamber pressure of 0.1Torr, and the temperature in the deposition chamber is 200°C; then th...

specific Embodiment approach 2

[0039] Specific implementation mode 2: application of TiO 2 Device for using molecular pollution adsorption material coated with membrane layer zeolite molecular sieve

[0040] Such as Figure 5 As shown, the device includes a supporting frame 1, a heat insulating layer 2, a carrying box 3, a limit bar 4 and a molecular pollution adsorption material 5, the supporting frame 1 is a regular hexagonal box made of aluminum-magnesium alloy, and the upper cover of the box is It is a movable cover, and the movable cover is connected with the main body of the box body by pressing and buckling; the inside of the support frame 1 is evenly divided into 6 triangular chambers by setting 6 limit bars, and the carrying box 3 is arranged in the chamber; the heat insulation layer 2 passes through The method of bonding is fixed between the support frame 1 and the carrying box 3, and the carrying box 3 is an 80-mesh metal aluminum mesh bag, such as Figure 4 shown. The TiO prepared by specific...

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Abstract

The invention discloses a preparation method and an adsorption device of a molecular pollution adsorption material with self-cleaning performance and a zeolite molecular sieve coated with a TiO2 filmlayer, and belongs to the technical field of molecular cleaning. The invention aims to solve the problem that existing space molecular pollutants condense and deposit on the surface of each sensitiveelement to influence the full play of functions of the sensitive elements and even cause failure. The zeolite molecular sieve is used as a core, the TiO2 film prepared by an atomic layer deposition method is used as a shell, and the molecular pollution adsorption material with the zeolite molecular sieve coated with the TiO2 film layer is obtained. The film layer has good three-dimensional shape retention and wrapping performance, the structural stability of the zeolite molecular sieve is improved, and meanwhile, the TiO2 shell layer has good photocatalytic performance and shows good self-cleaning capacity under ultraviolet light. The adsorbing capacity of the molecular pollution adsorption material prepared by the invention on aerospace pollutants reaches 13.5 mg.g <-1 >, and the excellent pollutant treatment capacity of the molecular pollution adsorption material can be expanded and applied to the fields of automobile exhaust treatment, green spraying and the like.

Description

technical field [0001] The invention relates to a TiO with self-cleaning properties 2 The invention relates to a preparation method and an adsorption device of a molecular pollution adsorption material coated with a zeolite molecular sieve, belonging to the technical field of molecular cleaning. Background technique [0002] With the development of spacecraft in the direction of high performance, high reliability, and long life, stringent requirements are placed on the accuracy and sensitivity of payloads. The impact of space molecular contamination on payload-sensitive surfaces and its prevention and control have received great attention. Space molecular pollutants will condense and deposit on the sensitive surface of each load, affecting its full function and even causing the load to fail. Therefore, it is urgent to take corresponding means and measures to control the formation of pollution and reduce its impact on spacecraft. Therefore, it is very necessary to provide a...

Claims

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Application Information

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IPC IPC(8): B01J20/18B01J20/28B01J20/30B01D53/86B01D53/72B01D53/02
CPCB01D53/02B01D53/8668B01D2259/804B01J20/0248B01J20/186B01J20/28019
Inventor 秦伟李杨吴晓宏卢松涛康红军
Owner HARBIN INST OF TECH
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