Coordination polymer type ion exchange material, preparation and application thereof

An ion exchange material, coordination polymer technology, applied in the direction of ion exchange, anion exchange, organic anion exchanger, etc., can solve the problems of difficult ion exchange process, difficult post-processing, changes, etc., to achieve high yield, reaction The effect of short time and low yield

Inactive Publication Date: 2010-06-09
TIANJIN NORMAL UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0012] In view of the above situation, the present invention solves the problem that the cavity structure of the main body of the ion exchange material is easy to change with the change of anions, which makes the ion exchange process difficult to carry out and makes post-processing very difficult.

Method used

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  • Coordination polymer type ion exchange material, preparation and application thereof
  • Coordination polymer type ion exchange material, preparation and application thereof
  • Coordination polymer type ion exchange material, preparation and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] Preparation and Discussion of Bispyrazine-Bridged Organic Ligand L Containing Oxadiazole Ring

[0031] 1. Synthesis experiment and post-processing:

[0032] 18.6 g of pyrazine-2-carboxylic acid (0.15 mol) and 12.8 g of hydrazine hydrochloride hydrate (0.08 mol) were placed in a three-necked flask and stirred and mixed, and then 50 mL of phosphoric acid (85%) was added. Subsequently, 20.1 g of phosphorus pentoxide (0.48 mol) and 23.0 g of phosphorus oxychloride (0.15 mol) were added successively. The viscous solution was heated to 140°C and stirred vigorously for four hours, then cooled to 17°C. Pour twice distilled water into the obtained mucus until the mucus and water are completely combined, and after dissolving, neutralize with sodium bicarbonate until the pH value of the solution is 7. An orange-yellow precipitate precipitated, was filtered, washed three times with 60 mL of anhydrous ether, and then dried in vacuo. Accurately weighed with an analytical balance, ...

Embodiment 2

[0042] Preparation and Discussion of Bispyrazine-Bridged Organic Ligand L Containing Oxadiazole Ring

[0043] 1. Synthesis experiment and post-processing:

[0044] 4.65 g of pyrazine-2-carboxylic acid (0.0375 mol) and 3.2 g of hydrazine hydrochloride (0.02 mol) were placed in a three-necked flask and stirred and mixed, and then 15 mL of phosphoric acid (85%) was added. Subsequently, 5.03 g of phosphorus pentoxide (0.12 mol) and 5.8 g of phosphorus oxychloride (0.0375 mol) were carefully added in succession. The viscous solution was heated to 140°C and stirred vigorously for four hours, then cooled to 25°C.

[0045] Post-treatment process: Pour twice distilled water into the obtained mucus until the mucus and water are completely fused, dissolve and neutralize with sodium bicarbonate until the pH of the solution is 7. An orange-yellow precipitate precipitated, was filtered, washed three times with 20 mL of anhydrous ether, and then dried in vacuo. Weigh accurately with an an...

Embodiment 3

[0048] Preparation, Structure and Discussion of Results of Coordination Polymer Ion Exchange Materials

[0049] 1. Preparation of new materials:

[0050] Anion is BF 4 - Preparation of ion-exchange materials: AgBF at 30 °C 4 (2mmol, 0.39g) and an equimolar amount of L ligand (2mmol, 0.45g) were dissolved in methanol / chloroform (commercially available analytical grade, volume ratio 1:1, 60mL) organic solvent, stirred for 1 hour, and then the obtained The clear solution was left to stand, and with the volatilization of the solvent, the ion exchange material could be obtained after 4 days. Filter, wash with 40 mL of anhydrous ether, and finally vacuum-dry. Calculated yield: 80%.

[0051] Anion is AsF 6 - Preparation of coordination polymer ion exchange materials: AgAsF at 30 °C 6 (2mmol, 0.60g) and an equimolar amount of L ligand (2mmol, 0.45g) were dissolved in methanol / chloroform (commercially available analytical grade, volume ratio 1:1, 80mL) organic solvent, stirred ...

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Abstract

The invention discloses a coordination polymer ion exchange material, a preparation and the application thereof, belonging to the inorganic-organic hybrid functional molecular materials and the synthetic technique, which relates to a group of coordination polymer with a same 3-D open framework and preparation. The invention solves the problem that the exchange process of the ion is not easy to becarried out due to that a cavity structure of a body of the ion exchange material is easily changed with the change of an anion, and the problem of difficult post-treatment. The material of the invention is the material based on a novel organic coordination L of double-pyrazine containing an oxadiazole ring and an Ag inorganic metal salt; wherein, a molecular formula of L is C10H6N6O, and an anionof the Ag inorganic metal salt is AsF6<->, CF3SO3<->or SbF6<->. The material has the advantages of good selected ion-exchange performance, simple synthetic techniques and equipment, short reaction time, easy post-treatment, higher yield, simple and easy exchange process; thereby having the possibility for pushing the materials from the laboratory to practical application.

Description

[0001] This application is a divisional application of the original patent application titled "New Ion Exchange Material and Its Preparation and Application". The filing date of the original patent application is: 2005.04.26, and the application number is: 200510013354.0. technical field [0002] The invention belongs to a new type of inorganic-organic hybrid functional ion exchange material and its synthesis and application technology, in particular to a preparation method and application technology of a coordination polymer functional material with the same three-dimensional skeleton structure. Background technique [0003] In recent years, the discipline of chemistry is showing a trend of rapid development to the level above the molecular level, and the research on multifunctional advanced complex structural systems has become one of the mainstream and hot spots of current chemical research. Progress and breakthroughs in these areas are not only of great significance to c...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01J41/04C07D413/14B01J41/13
Inventor 杜淼赵小军郭建华
Owner TIANJIN NORMAL UNIVERSITY
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