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Preparation method of poly siloxane quaternary ammonium modified zeolite and application thereof

A technology of polysiloxane and quaternary ammonium salt, which is applied in the direction of botany equipment and methods, applications, chemical instruments and methods, etc., can solve the problems of short service life and decreased release of surface active components, and achieve long service life and strong The effect of adsorption capacity and simple preparation process

Inactive Publication Date: 2013-07-24
SHANGHAI NORMAL UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Although the modified zeolites prepared by the above methods have good adsorption capacity for anionic pollutants in water, the disadvantage is that the small molecular cationic compounds immobilized on the surface of zeolite through electrostatic interaction will be slowly released into the treated water during use. And lead to the gradual decline of its surface active components, resulting in a shorter service life

Method used

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  • Preparation method of poly siloxane quaternary ammonium modified zeolite and application thereof
  • Preparation method of poly siloxane quaternary ammonium modified zeolite and application thereof
  • Preparation method of poly siloxane quaternary ammonium modified zeolite and application thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0027] This example is the preparation of polysiloxane quaternary ammonium salt modified zeolite (1)

[0028] In situ polymerization of 3-(trimethoxysilyl)propylcetyldimethylammonium chloride on zeolite surfaces.

[0029] Weigh 0.50g of 3-(trimethoxysilyl)propylhexadecyldimethylammonium chloride and add it into a 250mL conical flask with a stopper, add 37.00mL of deionized water, after ultrasonic dissolution, add 10.00 g zeolite, after shaking at room temperature for 30min, add 3.00mL of 4.00mol / L hydrochloric acid solution, adjust the concentration of hydrochloric acid solution to 0.30mol / L, and place it in a 50°C constant temperature shaking water tank to react for 6h. After the reaction is completed, wash it with deionized water Until the solution is clear, place it in a blast drying oven at 90°C for 2 hours to obtain polysiloxane quaternary ammonium salt-modified zeolite, and the number of moles of quaternary ammonium salt functional groups per gram of zeolite is 1.07×10 ...

Embodiment 2

[0031] This example is the preparation of polysiloxane quaternary ammonium salt modified zeolite (2)

[0032] In situ polymerization of 3-(trimethoxysilyl)propylcetyldimethylammonium chloride on zeolite surfaces.

[0033] Weigh 0.20g of 3-(trimethoxysilyl)propylhexadecyldimethylammonium chloride and add it into a 250mL conical flask with a stopper, add 37.00mL of deionized water, after ultrasonic dissolution, add 10.00g of zeolite, after shaking at room temperature for 30min, add 3.00mL of 4.00mol / L hydrochloric acid solution, adjust the concentration of hydrochloric acid solution to 0.30mol / L, and place it in a 50°C constant temperature shaking water tank for 6h. After the reaction is completed, rinse with deionized water Wash until the solution is clear, and dry it in a blast drying oven at 90°C for 2 hours to obtain polysiloxane quaternary ammonium salt-modified zeolite, and the number of moles of quaternary ammonium salt functional groups per gram of zeolite is 4.29×10 -5...

Embodiment 3

[0035] This example is the preparation of polysiloxane quaternary ammonium salt modified zeolite (3)

[0036] In situ polymerization of 3-(trimethoxysilyl)propylcetyldimethylammonium chloride on zeolite surfaces.

[0037] Weigh 0.10g of 3-(trimethoxysilyl)propylhexadecyldimethylammonium chloride and add it into a 250mL conical flask with a stopper, add 37.00mL of deionized water, after ultrasonic dissolution, add 10.00g of zeolite, after shaking at room temperature for 30min, add 3.00mL of 4.00mol / L hydrochloric acid solution, adjust the concentration of hydrochloric acid solution to 0.30mol / L, and place it in a 50°C constant temperature shaking water tank for 6h. After the reaction is completed, rinse with deionized water Wash until the solution is clear, and dry it in a blast drying oven at 90°C for 2 hours to obtain polysiloxane quaternary ammonium salt modified zeolite, and the number of moles of quaternary ammonium salt functional groups per gram of zeolite is 2.14×10 -5...

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Abstract

The invention discloses a preparation method of poly siloxane quaternary ammonium modified zeolite and the application thereof. Natural zeolite is taken as a carrier, and in situ polymerization is performed on the surface of the natural zeolite through a siloxane quaternary ammonium monomeric compound, so that the poly siloxane quaternary ammonium modified zeolite which is harmless to the environment is obtained. The poly siloxane quaternary ammonium modified zeolite has positive charge on the surface, not only has high adsorption capacity to pollutant with negative charge in the water, such as Cr2O72 I, humic acid and Congo red, but also has effects of strong bacteriostasis and antibiosis, and can be widely applied to purification and disinfection treatment of various water bodies. The preparation method is simple, the obtained poly siloxane quaternary ammonium modified zeolite has long service life; and compared with unmodified natural zeolite, the poly siloxane quaternary ammonium modified zeolite has the advantages that the adsorption capacity to negative ion in the water and organic pollutant is greatly improved, and simultaneously the poly siloxane quaternary ammonium modified zeolite restrains the reproduction and growth of harmful microbe while purifying water bodies.

Description

technical field [0001] The invention relates to a preparation method and application of a polysiloxane quaternary ammonium salt modified natural zeolite, in particular to a method for on-site polymerization of a siloxane quaternary ammonium salt monomer compound on the surface of a natural zeolite and a polysiloxane quaternary ammonium salt Application of modified natural zeolite in water treatment. Background technique [0002] With the increasing water pollution worldwide and the gradual scarcity of available water resources, issues such as sewage treatment, ecological agriculture, and water resource protection have received widespread attention from all countries in the world. As a developing country with a large population, on the one hand, a large amount of industrial sewage produced in the process of industrial production, domestic sewage produced in people's daily life, and sewage produced in the process of agricultural production due to the loss of agricultural ferti...

Claims

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Application Information

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IPC IPC(8): B01J20/26B01J20/30A01N55/10A01P1/00C02F1/28C02F1/50C08G77/26
Inventor 梁杰陆佳杰焦玉超李改
Owner SHANGHAI NORMAL UNIVERSITY
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