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Preparation method of supported zirconia hydrate with high specific surface area through dispersion modification and application thereof

A high specific surface area, hydrated zirconia technology, applied in chemical instruments and methods, water pollutants, semi-permeable membrane separation, etc., can solve the problems of extra energy consumption and ineffective substances, so as to reduce the use and facilitate mass production , the effect of a wide range of sources

Inactive Publication Date: 2018-10-19
WUHAN UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Physical methods include ultrasonic dispersion and mechanical stirring, but ultrasonic dispersion requires additional energy and cannot act on the substances in the matrix cavity, and most of the hydrated zirconia is generated in the matrix cavity, which is difficult to disperse through ultrasound and stirring

Method used

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  • Preparation method of supported zirconia hydrate with high specific surface area through dispersion modification and application thereof
  • Preparation method of supported zirconia hydrate with high specific surface area through dispersion modification and application thereof
  • Preparation method of supported zirconia hydrate with high specific surface area through dispersion modification and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0043] Example 1, see figure 1 :

[0044] The invention provides a method for preparing high specific surface area supported hydrated zirconia by dispersion modification, which comprises the following steps:

[0045] 1) Prepare 200mL of 4mol / L NaOH solution; dissolve 20g of hydroxypropyl cellulose in 200mL of distilled water at 80°C to make a solution with a mass fraction of 10% separately, mix it with sodium hydroxide solution, and stir evenly to obtain a phase Mixed solution with good capacity;

[0046] 2) dissolving zirconium chloride in a hydrochloric acid solution with a hydrochloric acid mass concentration of 0.4%, adding 20 g of a macroporous cation exchange resin, and reacting at 30° C. for 12 hours to obtain an ion exchange resin adsorbed with zirconium ions;

[0047] 3) Immerse the ion exchange resin adsorbed with zirconium ions in the mixed solution prepared in step 1) and react for 12 hours;

[0048] 4) After the reaction, the product was rinsed with distilled w...

Embodiment 2

[0051] The present invention provides a method for preparing high specific surface area supported hydrated zirconia by dispersion modification, which is basically the same as in Example 1, except that in step 1): 40g of polyvinyl alcohol is dissolved in 200mL of distilled water at 80°C, Separately prepare a solution with a mass fraction of 20%, and then mix it with 200mL of 4mol / L sodium hydroxide solution, and stir evenly to obtain a mixed solution with good compatibility.

[0052] The specific surface area of ​​the product is 18.4352m 2 / g, compared with the same kind of composite adsorption material without dispersion treatment, its specific surface area is increased by 2.0 times.

[0053] The product of this example is filled into a microfiltration membrane tube to obtain a filter column, and the desulfurization wastewater is treated. The initial concentration of zinc ions, equipment and operation method in the desulfurization wastewater are the same as those in Example 1,...

Embodiment 3

[0054] Example 3, see Figure 2 to Figure 4 :

[0055] The present invention provides a method for preparing high specific surface area loaded hydrated zirconia by dispersion modification, which is basically the same as in Example 1, except for step 1): first prepare a 2mol / L sodium hydroxide solution, and then go to the hydroxide Add 25g of octadecyltrimethylammonium chloride to the sodium solution and stir evenly to fully dissolve the octadecyltrimethylammonium chloride to obtain a mixed solution with good compatibility.

[0056] The specific surface area of ​​the product is 21.7709m 2 / g, compared with the same kind of composite adsorption material without dispersion treatment, its specific surface area is increased by 2.5 times.

[0057] The product of this example is filled into a microfiltration membrane tube to obtain a filter column, and the desulfurization wastewater is treated. The initial concentration of zinc ions in the desulfurization wastewater, the equipment ...

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Abstract

The invention provides a preparation method of supported zirconia hydrate with a high specific surface area through dispersion modification and an application thereof. The preparation method comprisesfollowing steps: using a surfactant to carry out surface modification on macroporous cation exchange resin with zirconium ions: mixing a surfactant and sodium hydroxide to prepare a mixed solution, adding macroporous cation exchange resin into a zirconium chloride / hydrochloric acid solution to carry out reactions, then adding the macroporous cation exchange resin with zirconium ions into a mixedsolution containing a surfactant to carry out reactions, after reactions, washing the cation exchange resin by distilled water and anhydrous ethanol in sequence, and drying the cation exchange resin to obtain the product. According to the preparation method, a surfactant is used to adjust the dispersion state of zirconia hydrate in the cation exchange resin so that zirconia hydrate is dispersed inthe cation exchange resin in a nanometer level, the specific surface area and heavy metal adsorbing performance of the composite material are both enhanced, the supported zirconia hydrate is used toprocess desulfurization wastewater, zinc ions and organic substances in wastewater can be removed at the same time, the using amount of nano-filter membrane is reduced, and the cost is reduced therefore.

Description

technical field [0001] The invention relates to the technical field of manufacturing environmentally friendly materials, in particular to a method for preparing high specific surface area loaded hydrated zirconia by dispersion modification and its application. Background technique [0002] Desulfurization wastewater from thermal power plants has high suspended solids content, high calcium and magnesium salt content, serious heavy metal ion pollution, large water quality changes, and a large amount of SO 4 2- , Cl - And other characteristics, become difficult to treat sewage in thermal power plants. The power plant first performs flocculation treatment on the desulfurization wastewater, and aggregates and precipitates larger suspended particles in the wastewater. However, due to the acidic pH of the wastewater during flocculation, there are still high levels of heavy metal ions, organic matter, and tiny suspended colloidal particles in the treated wastewater. Thermal power...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J20/26C02F1/28B01D63/06B01D61/14B01J20/30
CPCB01D61/147B01D63/06B01J20/06B01J20/26C02F1/28C02F2101/20C02F2103/18
Inventor 冀运东老泳豪
Owner WUHAN UNIV OF TECH
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