Novel ion-exchange material, its preparation and application

A technology of ion exchange materials and molecular formulas, which is applied in the field of preparation of coordination polymer functional materials, can solve the problems of difficult ion exchange process, difficult post-processing, and changes, and achieves high yield, short reaction time, and high yield. low effect

Inactive Publication Date: 2008-02-13
TIANJIN NORMAL UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0011] 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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  • Novel ion-exchange material, its preparation and application
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  • Novel ion-exchange material, its preparation and application

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] Preparation and Discussion of Bispyrazine-Bridged Organic Ligand L Containing Oxadiazole Ring

[0029] 1. Synthesis experiment and post-processing:

[0030] 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

[0039] Preparation and Discussion of Bispyrazine-Bridged Organic Ligand L Containing Oxadiazole Ring

[0040] 1. Synthesis experiment and post-processing:

[0041] 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.

[0042] 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

[0045] Preparation, Structure and Discussion of Results of Ion Exchange Materials 1-4

[0046] 1. Preparation of new materials:

[0047] New ion exchange material 1 (hereinafter referred to as material 1): AgBF 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, material 1 could be obtained after 4 days. Filter, wash with 40 mL of anhydrous ether, and finally vacuum-dry. Calculated yield: 80%.

[0048] New ion exchange material 2 (hereinafter referred to as material 2): ​​AgAsF at a temperature of 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 for 1 hour, and then ...

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Abstract

This invention relates to a new ion exchange material, in addition to its preparing and uses, which belongs to the mineral-organic hybridization function molecular material and synthetic technology. The material is a coordinated polymer having the same three-dimensional opening cage, which can prevent the major cavity structure changing with the anion. The material is based on double piperazidine bridge organic ligand L with oxdiazole ring and Ag1 mineral metal salt, and its general formula is {[Ag(L)]X*solution}n, wherein the molecular formula of L is: C10H6N6O, and X is AsF6-,CF3SO3-, or SbF6- anion.

Description

technical field [0001] The invention belongs to a novel inorganic-organic hybrid functional ion exchange material and its synthesis 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 [0002] 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 chemistry itself, but also have a direct role in promoting materials chemistry, solid state chemistry, and life sciences and other related disciplines. So far, a variety of systems with complex structures and unique functions have been reported, especially new compounds with high-level ordered top...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01J41/04B01J41/02
Inventor 杜淼赵小军郭建华
Owner TIANJIN NORMAL UNIVERSITY
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