Application of Ultramicroporous Metal-Organic Frameworks in Hydrogen Isotope Separation

A technology of isotope separation and organic framework, applied in the field of nuclear energy utilization, can solve the problems of low separation efficiency, low separation efficiency, and inability to be applied on a large scale, and achieve the effects of low price, simple preparation method, and cheap synthetic raw materials

Active Publication Date: 2020-04-24
TIANJIN POLYTECHNIC UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although cryogenic distillation is relatively easy for large-scale continuous production, its separation efficiency is very low; although chromatography has high efficiency, it cannot be applied on a large scale
However, the adsorbent materials currently used for hydrogen isotope separation have problems such as low separation efficiency.

Method used

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  • Application of Ultramicroporous Metal-Organic Frameworks in Hydrogen Isotope Separation
  • Application of Ultramicroporous Metal-Organic Frameworks in Hydrogen Isotope Separation
  • Application of Ultramicroporous Metal-Organic Frameworks in Hydrogen Isotope Separation

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0039] see Figure 1a , Figure 1b , H in SIFSIX-3-Zn 2 ,D 2 and T 2 Testing of Adsorption Isotherms of Pure Components.

[0040]Take 30-2000 mg SIFSIX-3-Zn, put it into a sample tube that has been accurately weighed, and carry out vacuum degassing on the adsorption instrument. The degassing temperature is between 30-300 ° C, and the degassing time is 1-12 hours In between, after the degassing is completed, the sample tube with the sample is accurately weighed again to obtain the sample mass, and the sample tube is transferred to the workstation for testing. The test temperature is between 18 K and 77 K, and the purity of the gas obtained by the test is greater than 99.99%.

Embodiment 2

[0042] see Figure 2a , 2b , 2c, 2d, 2e, 2f, H in SIFSIX-3-Zn 2 ,D 2 and T 2 Batch Adsorption Separation Performance Test of Mixtures,.

[0043] Take 3-5 mg SIFSIX-3-Zn sample, put it in the sample cell, and perform vacuum degassing activation between 30-300 °C. After fully activated, cool the sample cell to the test temperature, and after the system is balanced, inject a specific proportion of H into the sample cell one or more times. 2 / D 2 / T 2 Mixture, so that it reaches a certain pressure point between 1kPa and 100kPa. After the system is adsorbed and balanced, open the valve to quickly extract the gas mixture that has not been adsorbed, and then close the valve. Cool the system to a certain temperature between 18 K-30 K. After equilibrating, connect the sample cell to the mass spectrometer, and gradually raise the temperature. At the same time, use mass spectrometry to analyze the change of hydrogen isotope content over time. The adsorption selectivity can be ca...

Embodiment 3

[0045] see image 3 , H in SIFSIX-3-Zn 2 、D 2 and T 2 Fixed bed adsorption separation performance test of the mixture.

[0046] Take 100-2000mg of SIFSIX-3-Zn powder and put it into a packed bed column of a certain specification to ensure that the sample is packed compactly. At the same time, the samples in the packed bed were activated by vacuum degassing between 30–300 °C and purged with He for a certain period of time. After fully activated, cool the sample cell to the test temperature, and after the system is balanced, pass a certain proportion of H from one end of the fixed bed to the bed at a certain flow rate. 2 / D 2 / T 2 At the same time, mass spectrometry is used to monitor the concentration change of the effluent gas at the other end until the effluent gas concentration remains stable and consistent with the inlet gas concentration. Due to the high selectivity of the material to isotopes of hydrogen at 20 K, the material can effectively separate D 2 / H 2 / T ...

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Abstract

The invention discloses the application of ultra-microporous metal-organic framework materials in isotope separation of hydrogen. The ultra-micro porous metal-organic framework material is SIFSIX-3-Zn, used for the effective separation of hydrogen isotopes at low temperature, and the chemical formula of the SIFSIX-3-Zn is Zn (pyr) 2(SiF6). Application of the ultra-microporous metal-organic framework material in the isotope separation of hydrogen enables the separation and purification of D2, H2 in the hydrogen isotope, and the preparation method of the ultra-microporous metal-organic frameworkmaterial is simple. The material can be synthesized in large volumes, and has the advantages of cheap raw materials and low price, and can be widely applied to the industrial hydrogen isotope separation.

Description

technical field [0001] The invention belongs to the technical field of nuclear energy utilization, and in particular relates to the application of an ultra-microporous metal-organic framework material in hydrogen isotope separation, which is a new application of ultra-microporous metal aggregates. Ultramicroporous structure of organic framework materials and D 2 、H 2 Quantum sieving effect at low temperature for D 2 / H 2 Isolation and Purification. 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. At present, the use of nuclear energy is mainly carried out by using the nuclear decay of high atomic number radioactive atoms, such as the current nuclear power plants, nuclear powered submarines and aircraft carriers. However, compared w...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01J20/22B01J20/30B01D59/00C08G83/00
CPCB01D59/00B01J20/226C08G83/008
Inventor 仲崇立韩国鹏黄宏亮刘大欢
Owner TIANJIN POLYTECHNIC UNIV
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