Method for preparing laminated zirconium phosphate silver-carrying powder

A technology of zirconium phosphate loaded with silver and powder, applied in the fields of botanical equipment and methods, animal repellents, biocides, etc., can solve the problems of incomplete ion exchange, long exchange time, low utilization rate of raw materials, etc. , High utilization rate of raw materials, simple production effect

Inactive Publication Date: 2006-02-08
INST OF PROCESS ENG CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to overcome the defects of long exchange time, incomplete ion exchange, and low raw material utilization rate in the preparation of layered zirconium phosphate silver-loaded powder in the prior art, thereby providing a short exchange time, complete ion exchange, and high raw material utilization. Preparation method of high-efficiency layered zirconium phosphate silver-loaded powder

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0013] Dissolve 2g AgNO in 300ml pure water 3 , slowly drop 2.8g of 28% ammonia water after dissolving, it can be seen that the solution turns from brown to clear and transparent, add 10g of α-ZrP powder with an average particle size of 4.5μm, stir for 1 hour, and then centrifuge, and use 0.1N HCl to test the solution for clear solution. White precipitate, the solid phase was washed with pure water and dried at 80°C, and the silver content of the solid phase was determined to be 11.0%.

Embodiment 2

[0015] Dissolve 0.5g AgNO in 1500ml pure water 3 , slowly drop 0.5g of 28% ammonia water after dissolving, it can be seen that the solution turns from brown to clear and transparent, add 10g of α-ZrP powder with an average particle size of 1.7μm, stir for 1 hour, and then centrifuge, and use 0.1NHCl to test the clear solution. White precipitate, the solid phase was washed with pure water and dried at 80°C, and the silver content of the solid phase was determined to be 3.0%.

Embodiment 3

[0017] Dissolve 1g of silver acetate in 200ml of pure water, slowly drop in 1.4g of 28% ammonia water after dissolving, it can be seen that the solution turns from brown to clear and transparent, add 10g of α-ZrP powder with an average particle size of 3.1μm, stir for 1 hour, and centrifuge. The clear liquid was tested with 0.1N HCl and there was no white precipitate in the test solution. The solid phase was washed with pure water and then dried at 80°C. The silver content of the solid phase was determined to be 5.7%.

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Abstract

The present invention method of lamellar silver-carried zirconium phosphate powder includes the following steps: slowly drop adding ammonia water with 3-4 times molar weight into aqueus solution of soluble silver salt whose concentration is 0.16-0.04 mol / L, after the solution colour is changed into clear and transparent from brown, adding zirconium phosphate alpha-Zr(HPO4)2.H2O powder, stirring for 1 hr, making centrifugal separation, washing solid phase by using water, drying at 80-100 deg.C so as to can obtain the invented product.

Description

technical field [0001] The invention relates to a method for preparing layered zirconium phosphate silver-loaded powder, in particular to a method for preparing layered zirconium phosphate silver-loaded powder by using layered zirconium phosphate ion-exchanged silver-loaded powder. Background technique [0002] The layered zirconium phosphate silver-loaded powder commonly used in silver-based antibacterial materials is made of layered zirconium phosphate α-Zr (HPO 4 ) 2 ·H 2 O (hereinafter abbreviated as α-ZrP) contains silver ions inserted between the layered structures. Layered Zirconium Phosphate α-Zr(HPO 4 ) 2 ·H 2 O is an excellent cation exchanger. When α-ZrP is ion-exchanged with metal cations, the conventional method is to put it directly into the aqueous solution of cations, and achieve the purpose of preparing new materials by controlling the exchange time and cation concentration. According to the results of Document 1 (J.Inorg. & Nucl.Chem.42, 1341, 1980),...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): A01N59/16
Inventor 陈运法李自强吴镇江叶树峰谢裕生
Owner INST OF PROCESS ENG CHINESE ACAD OF SCI
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