A kind of xenon gas krypton separation method
A separation method, xenon technology, applied in chemical instruments and methods, inert gas compounds, other chemical processes, etc., can solve the problem of high adsorption capacity and high selectivity, low adsorption capacity and selectivity, affecting industrial application value. and other problems, to achieve the effect of high selectivity, high adsorption and separation selectivity, and low equipment investment
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Embodiment 1
[0048] 1mmol Cu(BF 4 ) 2 , 1mmol KNbF 6 Dissolve 1.5mmol of 1,2-dipyridylacetylene in 10mL of methanol in 10mL of water, mix the two and stir at room temperature for 24h, and then activate the slurry at room temperature for 24h under vacuum after suction filtration to obtain NbFSIX-2-Cu -i material.
[0049] The single-component adsorption isotherms of xenon and krypton were measured for NbFSIX-2-Cu-i material at 273K and 298K, and the results are as follows: figure 2 , 3 shown.
[0050] The obtained NbFSIX-2-Cu-i material was filled into a 5cm adsorption column, and a 0.1MPa xenon / krypton (molar ratio 20:80) gas mixture was passed into the adsorption column at 0°C at 3.5mL / min, and the gas flowed out High-purity krypton gas (greater than 99.9%) gas can be obtained in the medium, and when xenon gas penetrates, the adsorption stops. Afterwards, nitrogen gas is switched to purge the adsorption column at room temperature, and the flow rate is 3.0 mL / min to obtain high-puri...
Embodiment 2
[0054] 1mmol ZnZrF 6 Dissolve 1.5mmol of 1,2-dipyridineacetylene in 10mL of methanol, mix the two at room temperature and stir for 24h, and then activate the slurry at room temperature for 24h under vacuum after suction filtration to obtain ZrFSIX-2-Zn -i material.
[0055] The single-component adsorption isotherm of xenon and krypton was measured for ZrFSIX-2-Zn-i material at 273K, and the results are as follows Image 6 shown.
[0056] The obtained ZrFSIX-2-Zn-i material was filled into a 5cm adsorption column, and a 0.1MPa xenon / krypton (molar ratio 20:80) gas mixture was passed into the adsorption column at 0°C at 3.5mL / min, and the gas flowed out High-purity krypton gas (greater than 99.9%) gas can be obtained in the medium, and when xenon gas penetrates, the adsorption stops. The adsorption column is purged with nitrogen at room temperature to obtain high-purity xenon gas (purity greater than 90%), and the adsorption column can be recycled.
Embodiment 3
[0058] 1mmol CuZrF 6 Dissolve 1.5mmol of 1,2-dipyridineacetylene in 10mL of methanol, mix the two at room temperature and stir for 24h, and then activate the slurry at room temperature for 24h under vacuum after suction filtration to obtain ZrFSIX-2-Cu -i material.
[0059] The single-component adsorption isotherm of xenon and krypton was measured for ZrFSIX-2-Cu-i material at 273K, and the results are as follows Figure 7 shown;
[0060] The obtained ZrFSIX-2-Cu-i material was filled into a 5cm adsorption column, and a 0.1MPa xenon / krypton (molar ratio 20:80) gas mixture was passed into the adsorption column at 0°C at 3.5mL / min, and the gas flowed out High-purity krypton gas (greater than 99.9%) gas can be obtained in the medium, and when xenon gas penetrates, the adsorption stops. The adsorption column is purged with nitrogen at room temperature to obtain high-purity xenon gas (purity greater than 85%), and the adsorption column can be recycled.
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