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Absorption material suitable for sea water desalination, and preparation method of absorption material suitable for sea water desalination

A technology of adsorbent and porous material, which is applied in the field of adsorption materials suitable for seawater desalination and its preparation, can solve problems such as equipment corrosion and economic loss, and achieve the effects of energy saving, increased adsorption capacity, and wide application range

Active Publication Date: 2016-02-03
BEIJING UNIV OF CHEM TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the distillation method also has its fatal weakness. The residue after distillation will cause corrosion of equipment and bring immeasurable economic losses.

Method used

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  • Absorption material suitable for sea water desalination, and preparation method of absorption material suitable for sea water desalination
  • Absorption material suitable for sea water desalination, and preparation method of absorption material suitable for sea water desalination

Examples

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Effect test

Embodiment 1

[0031]A. Accurately weigh 1.13g of SBA-15, place it in a glass bottle, and dry it in vacuum at 100°C for 12 hours. Use metal sodium to remove water and reflux the toluene until it is dark blue for collection. After the 250mL three-necked reaction flask was ventilated with nitrogen for 10 minutes, pour the dry SBA-15 into it, add a stirring bar and 20mL dry toluene and start stirring. Mix tetraethoxysilane and dry toluene at a volume ratio of 1:1 to form a 50mL solution, put it in the dropping funnel, add the mixed solution dropwise into the reaction flask, and stir at reflux at 90°C for 24h under the protection of nitrogen.

[0032] B. After the solid obtained by centrifugation was washed with ethanol, the solid was added to 150 mL of 10% (mass percentage concentration) HCl solution, and stirred at room temperature for 12 h. After the reaction was completed and the centrifuged solid was washed several times with deionized water, it was placed in a blast drying oven at 80°C and...

Embodiment 2

[0035] A. Accurately weigh 2.08g of SBA-15 and place it in a glass bottle, dry it in vacuum at 100°C for 16 hours, use metal sodium to remove water and reflux the toluene until it is dark blue for collection. After the 250mL three-necked reaction flask was ventilated with nitrogen for 10 minutes, pour the dry SBA-15 into it, add a stirring bar and 20mL dry toluene and start stirring. Mix tetraethoxysilane and dry toluene at a volume ratio of 1:1 to form a 50mL solution, put it in the dropping funnel, add the mixed solution drop by drop into the reaction flask, and stir at reflux at 80°C for 20h under the protection of nitrogen. .

[0036] B. After the solid obtained by centrifugation was washed with ethanol, the solid was added to 150 mL of 10% (mass percentage concentration) HCl solution, and stirred at room temperature for 8 h. After the reaction was completed and the centrifuged solid was washed several times with deionized water, it was placed in a blast drying oven at 80...

Embodiment 3

[0039] A. Accurately weigh 4.56g of SBA-15 and place it in a glass bottle, dry it in vacuum at 100°C for 20 hours, use metal sodium to remove water and reflux the toluene until it is dark blue for collection. After the 500mL three-necked reaction flask was ventilated with nitrogen for 15 minutes, pour the dry SBA-15 into it, add a stirring bar and 50mL dry toluene and start stirring. Mix tetraethoxysilane (TEOS) and dry toluene at a volume ratio of 1:1 to form a 100mL solution, put it in the dropping funnel, add the mixed solution drop by drop into the reaction flask, and stir under constant temperature at reflux at 90°C under nitrogen protection 36h.

[0040] B. After the solid obtained by centrifugation was washed several times with ethanol, the solid was added to 300 mL of 10% HCl (mass percentage concentration) solution, and stirred at room temperature for 24 h. After the reaction was completed and the centrifuged solid was washed several times with deionized water, it wa...

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Abstract

The invention relates to an absorption material suitable for sea water desalination, and a preparation method of the absorption material suitable for the sea water desalination. The absorption material is obtained by performing surface finishing on a mesoporous or large-pore material for multiple times by a siloxane reagent, and then performing hydrolysis in an acidic condition. The method is easy and liable to operate, and the prepared hybrid micro-pore and mesoporous absorption material is low in cost. When the hybrid micro-pore and mesoporous absorption material is used for absorbing a NaCl solution, a fact that the absorption effect of the material is excellent, the absorption capacity is up to 517.5mg / g, and the material can absorb various ions and can absorb anion and cations simultaneously is found.

Description

technical field [0001] The present invention relates to a kind of adsorption material used for seawater desalination and its preparation method. Specifically, the present invention relates to the preparation of a kind of multi-level porous adsorption material. obtained by chemical modification. Mesoporous or macroporous materials are modified by siloxane reagents and hydrolyzed under acidic conditions to obtain hybrid micro-mesoporous structures. The prepared multi-level porous materials can be used to remove anions and cations in seawater to achieve the purpose of seawater desalination . Background technique [0002] Water is the source of life and the artery of social and economic development. Although 70% of the earth is covered by water, the fresh water that people rely on for survival only accounts for 2.5% to 3% of the total surface water. With the changes in the world environment, the increase of population, the improvement of living standards and the rapid develop...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J20/22B01J20/28B01J20/30C02F1/28C02F103/08
Inventor 徐庆红黎甜甜向迎巧
Owner BEIJING UNIV OF CHEM TECH
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