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Method for enhancing humidifying property of zeolite through microwave auxiliary ammonium chloride

A microwave-assisted, ammonium chloride technology, applied in the direction of crystalline aluminosilicate zeolite, can solve problems such as few reports, and achieve the effects of fast moisture absorption and desorption, rich pores, and favorable diffusion and adsorption.

Active Publication Date: 2013-09-25
SOUTHEAST UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In recent years, microwave technology is becoming an effective method for rapid catalysis and preparation of high-performance new materials, but there are few reports on the application of microwave in the modification of porous media materials.

Method used

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  • Method for enhancing humidifying property of zeolite through microwave auxiliary ammonium chloride
  • Method for enhancing humidifying property of zeolite through microwave auxiliary ammonium chloride
  • Method for enhancing humidifying property of zeolite through microwave auxiliary ammonium chloride

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] 1) Grind the natural zeolite to 100-120 mesh, put it in a drying vessel, put it in an oven for drying, set the oven temperature at 80°C, and use it as a zeolite sample after drying for 6 hours, and weigh it accurately with an electronic balance The zeolite sample is packed in a non-metallic box, placed in a microwave field with uniform density, and heated with 100W microwave for 1min to obtain a primary modified zeolite sample;

[0022] 2) Add the primary modified zeolite sample to the ammonium chloride solution with a mass percentage concentration of 1% at a mass ratio of zeolite to solution of 1:3, and place the mixture in a non-metallic box. Place it in a microwave field and heat it with 100W microwave for 1min to obtain a secondary modified zeolite sample;

[0023] 3) Take the secondary modified zeolite sample, wash it, and dry it to prepare a new type of microwave-assisted ammonium chloride modified zeolite material

Embodiment 2

[0025] 1) Grind the natural zeolite to 100-120 mesh, put it in a dry container, put it in an oven for drying, and set the temperature of the oven at 90°C, and use it as a zeolite sample after drying for 7 hours, and accurately weigh it with an electronic balance The zeolite sample is placed in a non-metallic box, placed in a microwave field with uniform density, and heated with 200W microwave for 3 minutes to obtain a primary modified zeolite sample;

[0026] 2) Add the primary modified zeolite sample to the ammonium chloride solution with a mass percentage concentration of 3% at a mass ratio of zeolite to solution of 1:5, and place the mixture in a non-metallic box. Place it in a microwave field and heat it with 200W microwave for 3 minutes to obtain a secondary modified zeolite sample;

[0027] 3) Take the secondary modified zeolite sample, wash it, and dry it to prepare a new type of microwave-assisted ammonium chloride modified zeolite material.

Embodiment 3

[0029] 1) Grind the natural zeolite to 100-120 mesh, put it in a drying vessel, put it in an oven for drying, set the oven temperature at 100°C, and use it as a zeolite sample after drying for 8 hours, and accurately weigh it with an electronic balance The zeolite sample is packed in a non-metallic box, placed in a microwave field with uniform density, and heated by 300W microwave for 6 minutes to obtain a primary modified zeolite sample;

[0030] 2) Add the primary modified zeolite sample to the ammonium chloride solution with a mass percent concentration of 6% at a mass ratio of zeolite to solution of 1:5, and place the mixture in a non-metallic box. Place it in a microwave field and heat it with 300W microwave for 6 minutes to obtain a secondary modified zeolite sample;

[0031] 3) Take the secondary modified zeolite sample, wash it, and dry it to prepare a new type of microwave-assisted ammonium chloride modified zeolite material.

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Abstract

The invention discloses a method for enhancing the humidifying property of a zeolite through microwave auxiliary ammonium chloride. The method is characterized by adopting the following steps of: (1) drying and milling natural zeolite to obtain a zeolite sample, and carrying out microwave heating on the zeolite sample to obtain a primary modified zeolite sample; (2) adding the primary modified zeolite sample to an ammonium chloride solution, mixing, and then carrying out the microwave heating to obtain a secondary modified zeolite sample; (3) cleaning and drying the secondary modified zeolite sample to obtain a microwave auxiliary ammonium chloride modified zeolite material. The modified zeolite material prepared through the method disclosed by the invention has the characteristics of abundant pore path, high porosity, large specific area, facilitation of the diffusion and adsorption of water vapors, high moisture absorption and release capacity, high moisture absorption and release rate and high response speed on environmental temperature and humidity, can be used for effectively and fast adjusting the environmental relative humidity and can be repeatedly used when serving as the filler of a wall body humidifying material.

Description

technical field [0001] The invention belongs to the field of preparation of modified inorganic materials, and relates to a novel microwave-assisted ammonium chloride method for improving the humidity-regulating property of zeolite. Background technique [0002] Air humidity is one of the important parameters that affect the comfort of the indoor environment of a building. It plays an important role in human health, product production, and article protection. Humidity-regulating materials refer to materials that can automatically adjust the air humidity as the ambient air humidity changes, which can effectively improve the indoor environment and contribute to the green and sustainable development of the ecological environment. [0003] Zeolite has high porosity and large specific surface area. At the same time, due to the joint action of dispersion force and electrostatic force, it has strong adsorption. The theoretical specific surface area is 30-380m 2 / g, the porosity rea...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01B39/02
Inventor 陈振乾周波
Owner SOUTHEAST UNIV
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