A method for separating strontium and rubidium using sulfone bridge calix[4]arene

A technology of aromatic hydrocarbon separation and sulfone bridge cup, applied in the field of isotope separation and purification, can solve the problems of large difference in separation effect, poor operability, high cost of analysis and detection, and achieve excellent separation effect, strong operability and lower cost. Effect

Inactive Publication Date: 2019-01-08
BEIJING INSTITUTE OF TECHNOLOGYGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Sr special-effect resins from Dowex, Bio Rad and Eichrom can separate strontium and rubidium, but all these materials need to be imported from abroad, which is expensive
Moreover, when using Sr special-effect resin to separate strontium and rubidium ions, it is necessary to limit the volume of the analysis object and a special processing environment, which is inconvenient to operate, low in reuse rate, and the separation effect is quite different, so the cost of analysis and detection is very high, and the operability is not good. powerful

Method used

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  • A method for separating strontium and rubidium using sulfone bridge calix[4]arene
  • A method for separating strontium and rubidium using sulfone bridge calix[4]arene
  • A method for separating strontium and rubidium using sulfone bridge calix[4]arene

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Experimental program
Comparison scheme
Effect test

Embodiment 1～7

[0044] Step 1. Add 0.5g p-tertyl sulfone calix[4]arene and 1.5g activated XAD-7 resin to 250cm 3 In the single-necked flask, add 100ml of chloroform solution again, then the single-necked flask is sealed, magnetically stirred for 24h, and then rotary evaporated to remove the chloroform; the material obtained after the first rotary evaporation is then added to the 100ml of chloroform solution, Stir magnetically for 24 hours, then remove chloroform by rotary evaporation; add the material obtained after the second rotary evaporation into 100ml chloroform solution, filter evenly after magnetic stirring, and place the filtered solid material in a vacuum drying oven , dried at 85°C for 24 hours to obtain a white powdery p-tertyl sulfone bridge calix[4]arene-XAD-7 resin composite material;

[0045] Step 2. Number seven 50mL centrifuge tubes in turn as 1, 2, 3, 4, 5, 6, and 7, and add 0.01g of p-tertyl sulfone bridge calix[4]arene-XAD-7 to each centrifuge tube Resin composite materia...

Embodiment 8～10

[0049] Step 1. Add 0.5g p-tertyl sulfone calix[4]arene and 1.5g activated XAD-7 resin to 250cm 3In the single-necked flask, add 100ml of chloroform solution again, then the single-necked flask is sealed, magnetically stirred for 24h, and then rotary evaporated to remove the chloroform; the material obtained after the first rotary evaporation is then added to the 100ml of chloroform solution, Stir magnetically for 24 hours, then remove chloroform by rotary evaporation; add the material obtained after the second rotary evaporation into 100ml chloroform solution, filter evenly after magnetic stirring, and place the filtered solid material in a vacuum drying oven , dried at 85°C for 24 hours to obtain a white powdery p-tertyl sulfone bridge calix[4]arene-XAD-7 resin composite material;

[0050] Step 2. Number the three 50mL centrifuge tubes as 8, 9, and 10 in turn, and add 0.01g of p-tertyl sulfone bridging cup[4]arene-XAD-7 resin composite material and 10mL of strontium and rubid...

Embodiment 11～15

[0053] Step 1. Add 0.5g p-tertyl sulfone calix[4]arene and 1.5g activated XAD-7 resin to 250cm 3 In the single-necked flask, add 100ml of chloroform solution again, then the single-necked flask is sealed, magnetically stirred for 24h, and then rotary evaporated to remove the chloroform; the material obtained after the first rotary evaporation is then added to the 100ml of chloroform solution, Stir magnetically for 24 hours, then remove chloroform by rotary evaporation; add the material obtained after the second rotary evaporation into 100ml chloroform solution, filter evenly after magnetic stirring, and place the filtered solid material in a vacuum drying oven , dried at 85°C for 24 hours to obtain a white powdery p-tertyl sulfone bridge calix[4]arene-XAD-7 resin composite material;

[0054] Step 2. Number five 50mL centrifuge tubes sequentially as 11, 12, 13, 14, and 15, and add 0.01g of p-tertyl sulfone bridge cup[4]arene-XAD-7 resin composite material to each centrifuge tub...

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Abstract

The invention relates to a method for separating strontium and rubidium by thiacalix[4]arene, and belongs to the technical field of isotope separation and purification. The method comprises the following steps: loading the thiacalix[4]arene on an activated inert carrier; putting a composite material into an aqueous phase solution containing the strontium and the rubidium for adsorption and separation; eluting strontium adsorbed on the composite material by an acid solution to obtain a separated strontium solution. The thiacalix[4]arene has a superior separation effect on the strontium and rubidium; moreover, the method has high stability and high operability; the thiacalix[4]arene composite material can be used repeatedly, and is low in cost.

Description

technical field [0001] The invention relates to a method for separating strontium and rubidium by using sulfone calix[4]arene, belonging to the technical field of isotope separation and purification. Background technique [0002] As one of the branches of isotope geochronology, isotope geochronology is a method of isotope timekeeping to study and determine the formation age of various geological bodies by using the law of radioactive decay in nature. The application of strontium isotope in isotope measurement is of great significance. 87 Sr / 86 Sr records can be used to date back the time of marine sediments, assess the time of stratigraphic discontinuities, trace the origin of food, etc. [0003] The relative standard deviation standard required for strontium isotope analysis is very high, due to 87 The nature of Rb and 87 Sr is close, which interferes with 87 The analysis of Sr, and the two elements often co-exist, so it is necessary to effectively separate the two el...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C22B26/10C22B26/20C22B3/24
CPCC22B3/24C22B26/10C22B26/20Y02P10/20
Inventor 张东翔曹恒刘聪赵丽婷李亮
Owner BEIJING INSTITUTE OF TECHNOLOGYGY
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