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Application of metal-organic framework functional material

An organic framework and functionalization technology, which is used in radioactive purification, other chemical processes, chemical instruments and methods, etc., to achieve the effects of cheap synthetic raw materials, low price, and simple preparation methods.

Active Publication Date: 2016-01-06
BEIJING UNIV OF CHEM TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, so far, the use of metal-organic frameworks for the removal of radioactive ions from nuclear waste has been rarely reported.

Method used

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  • Application of metal-organic framework functional material
  • Application of metal-organic framework functional material
  • Application of metal-organic framework functional material

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] The MOF-808 (Zr) is synthesized as follows:

[0031]A certain amount of trimesic acid (2.1g, 10mmol) and zirconium oxychloride octahydrate (9.7g, 30mmol) were dissolved in N,N dimethylformamide / formic acid (450ml / 450ml) mixed solution, and the mixed solution was placed In a 1L glass pressure bottle, react at a constant temperature of 130°C for two days. Suction filter the obtained white product, rinse repeatedly with fresh N,N dimethylformamide, and soak the obtained product in anhydrous N,N dimethylformamide for three days, N,N dimethylformamide Change three times a day. The product activated by N,N dimethylformamide was suction filtered, rinsed repeatedly with deionized water and soaked for three days, the deionized water was replaced three times a day, the product activated by deionized water was repeatedly rinsed with anhydrous acetone, and the acetone It was replaced three times a day, and finally the acetone-activated product was vacuum-dried at room temperature...

Embodiment 2

[0051] MOF-808-SO 4 (Zr) Adsorption of Ba 2+

[0052] Take 10mg MOF-808-SO 4 (Zr), configure 10ml of Ba with a certain initial concentration 2+ Aqueous solution, add 10mg of MOF-808-SO to the solution 4 (Zr), the whole system was carried out in a stoppered Erlenmeyer flask, which was placed in a shaker for 24 hours. Subsequently, the suspension was filtered using a microporous syringe and a 0.22 μm microporous filter membrane (PTFE), and the filtered supernatant was tested for the metal ion concentration of the solution using an inductively coupled plasma spectrometer, and the removal rate reached 99%. %.

Embodiment 3

[0054] MIL-101-SO 3 H(Cr) Adsorption of Ba 2+

[0055] Take 10mg MIL-101-SO 3 H(Cr), configure 10ml of Ba with a certain initial concentration 2+ Aqueous solution, add 10mg of MIL-101-SO to the solution 3 H(Cr), the whole system was carried out in a stoppered Erlenmeyer flask, which was placed in a shaker for 24 hours. Subsequently, the suspension was filtered using a microporous syringe and a 0.22 μm microporous filter membrane (PTFE), and the filtered supernatant was tested for the metal ion concentration of the solution using an inductively coupled plasma spectrometer. The removal rate was measured to be 99%.

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PUM

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Abstract

The invention discloses an application of a metal-organic framework functional material, and belongs to the technical field of water processing. A metal-organic framework material is subjected to pre-modification and post-modification, and a series of different functional groups are introduced to an organic ligand or an inorganic metal cluster of the material. The metal-organic framework functional material is used as an adsorbent for removing radioactive ions from nuclear waste. The metal-organic framework material containing sulfate radicals and sulfonate radicals has a preferable adsorption effect on 133Ba<2+>; the maximum removal rate can reach 99.9%; and adsorption equilibrium can be achieved in 5min. By using the functionalized metal-organic framework material, a simple, easy, efficient, and fast novel method is provided for removing 133Ba<2+> from the nuclear waste. The metal-organic framework functional material has significant industrial application value with respect to nuclear pollution management.

Description

technical field [0001] The invention relates to a new application of metal aggregates, which adopts a method of pre-modification and post-modification of metal organic framework materials for the removal of radioactive ions in nuclear waste, and belongs to the technical field of water treatment. Background technique [0002] Since the discovery of X-rays and radium elements at the end of the 19th century, nuclear science and technology have been continuously developed and matured, and have been gradually applied in military, energy, industry, agriculture, medicine and other fields. Radioactive elements are present in nuclear energy materials and sources of radiation and have played an important role in the development of society. However, in the process of development and utilization of nuclear technology, radioactive wastewater will inevitably be produced, especially with the development of my country's nuclear power industry, the amount of radioactive wastewater will conti...

Claims

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Application Information

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IPC IPC(8): B01J20/22B01J20/30G21F9/12
Inventor 仲崇立彭亚光黄宏亮
Owner BEIJING UNIV OF CHEM TECH
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