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Example 2
6 g of U3O8 (7.13 mmol ILOs; 21.4 mmol U) are added to 3 ml distilled water. The U3O8 and water are mixed, and 2.5 mL 70% nitric acid (15.8 M aqueous HNO3; 39.52 mmol HNO3; 2.49 g HNO3) is added and the resulting solution is mixed and placed in an acid digester. The nitric acid to U3O8 mass ratio is 0.5. The nitric acid to U3O8 mole ratio is 1.85. The vessel is sealed and pressurized to between 5 bar and 40 bar with argon, and heated with microwaves to between 200° C. to 250° C., with the temperature being increased at a ramp rate of 3° C./min to 20° C./min. The temperature is then maintained at between 200° C. to 250° C. for between 30 and 120 min. At the end of this time, the system is degassed to vent pressure, while remaining at a pressure above the vapor pressure of the digested solution to prevent boiling. This may be done by maintaining the temperature to 200° C. to 250° C., while partially reducing the pressure to a pressure which exceeds the vapor pressure of the digested solution at between 200° C. to 250° C. After partially reducing the pressure, the solution temperature is reduced to 30° C. The pressure is reduced to 1 atmosphere, and the product uranyl nitrate solution is unloaded.
Example 1
According to this example there is provided a compound having the structural formula:
wherein R1, R2 and R3 are selected from the group consisting of alkyls, allyls, aryls, heteroaryls, hydrogen, non-metals and metalloids and where R1, R2 and R3 are different or the same.
Example 2
This example includes the elements of example 1 wherein R1, R2 and R3 are selected from the group consisting of alkyls selected from methyl, ethyl and/or propyl groups.
Example 3
This example includes the elements of example 1 wherein R1, R2 and R3 are methyl groups.
Example 4
This example includes the elements of example 1 wherein R1, R2 and R3 are selected from methyl and ethyl groups.
Example 5
This example includes the elements of example 1 wherein the compound indicates a vapor pressure of 0.1 Torr to 1.0 Torr over the temperature range 95° C. to 130° C.
Example 6
This example includes the elements of example 1 wherein the compound has a melting point of 67.2° C., plus or minus 5° C.