Separation method of dicyclohexanocucurbiturils-light and heavy rare earths
A dicyclohexyl six-membered melon, light and heavy rare earth technology, applied in the chemical industry, can solve the problems of difficult separation, high-purity single element, etc., and achieve the effect of simple operation and fast separation
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[0014] Example 1:
[0015] A symmetric dicyclohexyl six-membered cucurbital ring-light and heavy rare earth separation method (to separate La 3+ And Tb 3+ As an example), including the following steps:
[0016] When 1,4-DiCyHQ[6], Ln(NO 3 ) 3 And ZnCl 2 When massage the ratio 1:3:4 respectively, weigh La(NO 3 ) 3 ·6H 2 O25. 29mg (0.058 mmol), Tb(NO 3 ) 3 ·6H 2 O 26.46 mg (0.058 mmol), ZnCl 2 21.23 mg (0.156 mmol), 1,4-DiCyHQ[6]50 mg (0.039 mmol) were added to the same culture flask, and 5 mL of 3MHCl was added and heated to 50~70℃ to make it fully dissolved and uniform until clear. When allowed to stand for 2-3 days at room temperature, La precipitates in the form of precipitation for light rare earths, while Tb remains in the solution. The resulting precipitate is filtered and dried, and the yield is 76-82%.
Example Embodiment
[0017] Example 2:
[0018] A symmetric dicyclohexyl six-membered cucurbital ring-light and heavy rare earth separation method (to separate La 3+ And Tb 3+ As an example), including the following steps:
[0019] When 1,4-DiCyHQ[6], Ln(NO 3 ) 3 And ZnCl 2 When massage the ratio of 1:4:3 respectively, weigh La(NO 3 ) 3 ·6H 2 O33. 72 mg (0.078 mmol), Tb(NO 3 ) 3 ·6H 2 O 35.28 mg (0.078 mmol), ZnCl 2 15. 92 mg (0.117 mmol), 1,4-DiCyHQ[6]50 mg (0.039 mmol) are added to the same culture flask, add 5 mL of 3MHCl, and heat to 50~70℃ to make it fully dissolved and uniform until clear. When allowed to stand for 2-3 days at room temperature, La precipitates in the form of precipitation for light rare earths, while Tb remains in the solution. The resulting precipitate is filtered and dried, with a yield of 85-90%.
Example Embodiment
[0020] Example 3:
[0021] A symmetric dicyclohexyl six-membered cucurbital ring-light and heavy rare earth separation method (to separate La 3+ And Tb 3+ As an example), including the following steps:
[0022] When 1,4-DiCyHQ[6], Ln(NO 3 ) 3 And ZnCl 2 When massage the ratio of 1:5:2 respectively, weigh La(NO 3 ) 3 ·6H 2 O42. 15 mg (0.097 mmol), Tb(NO 3 ) 3 ·6H 2 O 44.11 mg (0.097 mmol), ZnCl 2 10. 62 mg (0.078 mmol), 1,4-DiCyHQ[6] 50 mg (0.039 mmol) are added to the same culture flask, add 5 mL of 3MHCl, and heat to 50~70℃ to make it fully dissolved and uniform until clear. When allowed to stand for 2-3 days at room temperature, La precipitates in the form of precipitation for light rare earths, while Tb remains in the solution. The resulting precipitate is filtered and dried, and the yield is 75-80%.
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