Large-particle zirconium phosphate and preparation method thereof

A technology of zirconium phosphate and large particles, which is applied in the direction of chemical instruments and methods, phosphorus compounds, and active ingredients of phosphorus compounds, etc. It can solve problems such as poor ion exchange capacity, and achieve the effects of easy industrialization, large particles, and simple methods

Active Publication Date: 2022-06-14
晋大纳米科技(厦门)有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The zirconium phosphate produced by this method has an amorphous structure, and the ratio of zirconium to phosphorus is 1:1.5. It is further crystallized by high-temperature roasting, and the structural formula of the roasted zirconium phosphate is HZr 2 (PO 4 ) 3 , which is amorphous zirconium phosphate, the ion exchange capacity of this product is poor

Method used

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preparation example Construction

[0030] The present invention provides a method for preparing large particles of zirconium phosphate, comprising:

[0031] a. Carbonate and zirconium oxychloride are mixed, heated and reacted to generate zirconium carbonate precipitate, and filtration to obtain zirconium carbonate;

[0032] b, the zirconia carbonate is mixed with the alkali solution to generate a zirconium hydroxide precipitate, filtered to obtain zirconia;

[0033] c, the zirconia hydroxide and phosphoric acid mixed, heating reaction, the formation of zirconium phosphate precipitation, after filtration, washing, drying, to give large particles of zirconium phosphate, the average diameter of 10-50 microns.

[0034] In the above preparation of zirconium carbonate precipitation, the amount ratio of carbonate (preferably sodium carbonate) to the substance of zirconium oxychloride is 2-5 (preferably 3-4). Under stirring, the zirconium oxychloride solution is slowly added to the sodium carbonate solution to form a zirco...

Embodiment 1

[0052]The 64.4g zirconium oxychloride octahydrate was dissolved in 200g pure water, 70.0g sodium carbonate was dissolved in 200g pure water, and the zirconium oxychloride solution was slowly added to the above sodium carbonate solution, stirred, and soon formed a white precipitate of zirconium carbonate gel. Heating and stirring at 90 °C for 2h, controlling the stirring speed of 400r / min, zirconium carbonate is often crystallized completely. Then it is cooled to room temperature, the crystallization is filtered, converted to zirconia with sodium hydroxide solution (containing 16.0g NaOH), and then slowly added to zirconium hydroxide at 70-80 °C and stirred with dilute phosphoric acid (containing 85% phosphoric acid 50 g), and then heated at 80 °C for 1h. Neutralize the excess phosphoric acid with sodium hydroxide, filter and clean the inorganic salts in zirconium phosphate, and then dry in varnish at 60 °C to give a layer of zirconium phosphate 57.8g, a moisture content of 22.9%, ...

Embodiment 2

[0056] 64.4g of zirconium chloride octahydrate was dissolved in 200g of pure water, 64.0g of sodium carbonate was dissolved in 200g of pure water, and the zirconium oxychloride solution was slowly added to the above sodium carbonate solution, stirred, and soon formed a white precipitate of zirconium carbonate gel. Heating and stirring at 90 °C for 2h, controlling the stirring speed of 300r / min, zirconium carbonate is often crystallized completely. Then it is cooled to room temperature, the crystallization is filtered, converted to zirconium hydroxide with sodium hydroxide solution (containing 16.0g NaOH), and then slowly added to zirconium hydroxide at 70-80 °C and stirred with dilute phosphoric acid (containing 85% phosphoric acid), and then heated at 80 °C for 1h. Neutralize the excess phosphoric acid with sodium hydroxide, filter and wash the inorganic salts in zirconium phosphate, and then dry in vacuo at 60 °C to give a layer of zirconium phosphate 56.6g, a moisture content o...

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Abstract

The invention relates to large-particle zirconium phosphate and a preparation method thereof, and the preparation method comprises the following steps: a, mixing carbonate and zirconium oxychloride, carrying out heating reaction to generate zirconium oxycarbonate precipitate, and filtering to obtain zirconium oxycarbonate; b, mixing the zirconium oxycarbonate with an alkali solution to generate a zirconium hydroxide precipitate, and filtering to obtain zirconium hydroxide; and c, mixing the zirconium hydroxide with phosphoric acid, carrying out heating reaction to generate zirconium phosphate precipitate, filtering, washing with water, and drying to obtain large-particle zirconium phosphate with the average diameter of 10-50 microns. As an ion exchanger, the large-particle zirconium phosphate is large in ion exchange capacity and good in exchange effect on metal ions. The cation exchanger can be widely applied to industries of metal ion exchange, water treatment, sewage treatment and the like, is particularly suitable for exchange of radioactive metal ions and heavy metal ions, and is very suitable for being used as the cation exchanger in the field of renal dialysis.

Description

Technical field [0001] The present invention relates to a technique for the preparation of zirconium phosphate, in particular a large particle of zirconium phosphate and a method of preparation thereof. Background [0002] As a new multifunctional inorganic material, α-zirconium phosphate (α-ZrP) has good stability, chemical activity and some unique structural properties, and is a hot spot in scientific research and application in recent years. In recent years, as a new type of metal phosphate multifunctional material that has been gradually developed, zirconium phosphate has been widely used in adsorption, ion exchange, photochemistry, materials chemistry, biomedicine and other fields. [0003] In 1968, Clearfield et al. successfully produced γ-zirconium phosphate (γ-Zr(PO 4 )(H 2 PO 4 ) 2 . H 2 O)。 Due to their layered structure, stable properties and easy modification, research on zirconium phosphate to date has focused on α-zirconium phosphate (α-ZrP) and γ-zirconium phosphat...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01B25/37B01J39/12C02F1/42A61K33/42A61P7/08
CPCC01B25/372B01J39/12C02F1/42A61K33/42A61P7/08C01P2004/61C02F2001/425C01P2006/12
Inventor 吴永鑫吴继贤
Owner 晋大纳米科技(厦门)有限公司
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