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A method for separating rubidium and cesium from each other

A technology of adsorbent and solution, which is applied in the field of element separation, can solve the problems of lack of methods, etc., and achieve the effect of good selectivity, simple operation and high separation efficiency

Inactive Publication Date: 2019-04-02
ZHEJIANG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

With the advancement of technology, the use of salt mineral resources in salt lakes is becoming more and more sufficient, and various separation methods are also emerging. However, there is still a lack of simple and feasible methods for rubidium and cesium with similar properties.

Method used

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  • A method for separating rubidium and cesium from each other
  • A method for separating rubidium and cesium from each other
  • A method for separating rubidium and cesium from each other

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0037] Dissolve 0.5g of the compound shown in structural formula I in 45.0mL of dichloromethane, mix well to obtain a solution; add 4.5g of SiO to this solution 2 -P Stir evenly, and use a rotary evaporator to evaporate dichloromethane under reduced pressure to volatilize the methylene chloride until the material is in a near-dry state, and then vacuum-dry the near-dry material at 55°C for 24 hours to obtain an adsorbent.

Embodiment 2

[0039] Dissolve 0.5g of the compound shown in structural formula I in 40.0mL of dichloromethane, mix well to obtain a solution; add 4.0g of SiO to this solution 2 -P Stir evenly, and use a rotary evaporator to evaporate dichloromethane under reduced pressure to volatilize the material to a near-dry state, and then vacuum-dry the near-dry material at 50°C for 24 hours to obtain an adsorbent.

Embodiment 3

[0041] Dissolve 0.5g of the compound shown in structural formula I in 50.0mL of dichloromethane, mix well to obtain a solution; add 5.5g of SiO to this solution 2 -P Stir evenly, and use a rotary evaporator to evaporate dichloromethane under reduced pressure to volatilize the material to a near-dry state, and then vacuum-dry the near-dry material at 60°C for 24 hours to obtain an adsorbent.

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Abstract

The invention discloses a method for separating rubidium and cesium from each other. The method comprises the following steps that an adsorbent and a solution containing rubidium and cesium are mixed,and the rubidium is adsorbed by the adsorbent, thereby being separated from the cesium; and the adsorbent is prepared in the mode that a compound as shown in the structural formula I is loaded on a carrier. The pH value of the solution containing rubidium and cesium is 9. Each g of the adsorbent is mixed with 20-30 mL of the solution containing rubidium and cesium. The adsorbent and the solutioncontaining rubidium and cesium achieve mixed adsorption at room temperature, and adsorption time is 90-150 min. Through the method for separating rubidium and cesium from each other, rubidium and cesium can be separated effectively, selectivity is good, operation is simple, and separation efficiency is high.

Description

technical field [0001] The invention relates to the technical field of element separation, in particular to a method for mutually separating rubidium and cesium. Background technique [0002] Salt lakes are lakes with high salinity in arid areas, and the salinity is greater than 35g / L. Salt lakes are the product of lake development to old age. They are rich in various salts and are important mineral resources. [0003] Salt lake is a kind of saline water body, usually refers to lakes with salinity w(NaCleq)>3.5% (greater than the average salinity of seawater), and also includes dry salt lakes with dry surface brine and composed of saline deposits and intercrystalline brine (underground brine lake). There are about 200 kinds of salt minerals deposited in the salt lake. Human beings have mined a large amount of rock salt, alkali, Glauber's salt and potassium, lithium, magnesium, boron, bromine, saltpeter, gypsum and medical sludge from the salt lake for basic chemical, agr...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C22B3/24C22B26/10
CPCC22B3/24C22B26/10Y02P10/20
Inventor 张安运吕越政吉艳琴王一宁刘少勇郭素荣
Owner ZHEJIANG UNIV