Preparation method of structure-enhanced silver/copper antibacterial zeolite and product prepared from structure-enhanced silver/copper antibacterial zeolite

A zeolite modification technology, which is applied in botany equipment and methods, crystalline aluminosilicate zeolite, chemicals for biological control, etc., can solve the problems of poor durability, fragility, shedding and preparation costs, and achieve Effects of high thermal stability and mechanical strength, good hardness, and low thermal expansion coefficient

Inactive Publication Date: 2012-05-16
NATIONAL YUNLIN UNIVERSITY OF SCIENCE AND TECHNOLOGY
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  • Application Information

AI Technical Summary

Problems solved by technology

[0005] In order to overcome the shortcomings of the prior art and solve the problems of poor durability, fragility, falling off and high production cost of general zeolite products, the present invention provides a preparation method of an antibacterial zeolite material with enhanced structural stability and its products, with the purpose of improving antibacterial Practicality and marketability of zeolite products

Method used

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  • Preparation method of structure-enhanced silver/copper antibacterial zeolite and product prepared from structure-enhanced silver/copper antibacterial zeolite
  • Preparation method of structure-enhanced silver/copper antibacterial zeolite and product prepared from structure-enhanced silver/copper antibacterial zeolite
  • Preparation method of structure-enhanced silver/copper antibacterial zeolite and product prepared from structure-enhanced silver/copper antibacterial zeolite

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Embodiment 1

[0036] Get 35% Y type zeolite (USY, Sodium silica aluminate Z-14, Grace Davison company manufactures) and 65% SiO 2 After mixing, add 70% (Y-type zeolite + SiO 2 ) and 30% modifier uniformly mixed, and heated with 0.75M sodium hydroxide for 50 minutes by the hydrothermal method to carry out the gelation process to obtain the zeolite colloid, put the zeolite colloid into a mold, and squeeze the zeolite colloid by means of oil pressure into a hollow columnar shape, then dried at 100°C for 8 hours, and calcined at 450°C for 8 hours to prepare a structurally strengthened hollow columnar zeolite. The above percentages are all by weight. Its silicon-aluminum ratio (Si / Al) is 17, and its BET specific surface area is 482m 2 / g. The size of the gained hollow columnar zeolite is as follows figure 1 As shown, the finished product is as image 3 shown.

[0037] Take 1.6g of silver nitrate and 3g of copper nitrate and dissolve them in 350mL of deionized water, and shake them in an ult...

Embodiment 2

[0044] Take 35% Y-type zeolite and 65% SiO 2 After mixing, add 50% (Y-type zeolite + SiO 2 ) and 50% modifying agent were evenly mixed, and heated with 0.75M sodium hydroxide for 50 minutes by hydrothermal method to carry out the gelation process to obtain zeolite colloid, which was spread on iron grid, and then dried at 100°C for 8 Hours, calcined at 450° C. for 8 hours to prepare a zeolite with a strengthened network structure, and its silicon-aluminum ratio (Si / Al) is 17. The schematic diagram of the obtained reticulated zeolite is as figure 2 As shown, the finished product is as Figure 4 shown. Referring to Example 1, the structure-strengthened zeolite was mixed with silver nitrate and copper nitrate ion aqueous solutions with the same ratio and parameters to prepare metallic zeolite with silver and copper ion contents of 1%. The above percentages are by weight.

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Abstract

The invention relates to a preparation method of structure-enhanced silver / copper antibacterial zeolite and a product prepared from the structure-enhanced silver / copper antibacterial zeolite. According to the invention, the silicon-to-aluminum ratio of the zeolite is changed and a proper amount of modifiers (such as refractory mortar, zirconium phosphate or fly ash) are added so as to enhance the mechanical strength and stability of the zeolite and improve the defect that the traditional zeolite product is nondurable; and a gelatinizing agent of a sodium hydroxide or potassium hydroxide alkaline aqueous solution is added, and a hydrothermal gelatinizing process, molding (such as carrying out oil pressing to form a hollow cylinder shape), drying and calcining are carried out so as to prepare the durable and high-practicability zeolite product. In the antibacterial zeolite provided by the invention, silver ions with the best antibacterial property and copper ions with good antibacterial property and low cost are used as antibacterial metal ions; and compared with the conventional method in which single antibacterial metal is used, the preparation method disclosed by the invention can maintain the excellent antibacterial capacity of the silver ions, and by mixing the copper ions, the preparation cost is reduced, the acceptability of the antibacterial zeolite product is increased, so that the antibacterial zeolite product can be more widely applied to purification of indoor air.

Description

technical field [0001] The invention relates to a zeolite material, in particular to a method for manufacturing the zeolite material and its products, which use modified substances to strengthen the structural stability of the zeolite, and use silver and copper ions as antibacterial metals. The invention also relates to an antibacterial zeolite with high structural stability, the antibacterial zeolite can be widely used to purify indoor air quality and reduce the probability of infection and spread of germs. Background technique [0002] The common technologies of general indoor air cleaning devices can be mainly divided into filter adsorption, negative ions, ozone, photocatalysis, etc. Filtration and adsorption technology mainly uses activated carbon or activated carbon fiber to adsorb and filter pollutants to achieve the purpose of removing pollutants, but it has no antibacterial effect. Negative ion technology mainly generates negative ions through electric energy. Negat...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01B39/02A01N59/20A01N59/16A01N25/08A01P1/00
Inventor 谢祝钦陈玟璇李献钦蔡佳熹郑鑫汉
Owner NATIONAL YUNLIN UNIVERSITY OF SCIENCE AND TECHNOLOGY
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