	US 12,344,526 B2
	System and method for separation of salts and carbon allotropes
James O'Malley, Knoxville, TN (US); David L. Wood, III, Knoxville, TN (US); Anna E. Douglas, Knoxville, TN (US); and Lucy Moore, Knoxville, TN (US)
Assigned to SkyNano LLC, Louisville, TN (US)
Filed by SkyNano LLC, Louisville, TN (US)
Filed on Nov. 8, 2023, as Appl. No. 18/504,240.
Prior Publication US 2025/0145465 A1, May 8, 2025
Int. Cl. C01B 32/05 (2017.01); C01B 32/17 (2017.01); C01B 32/215 (2017.01); C01B 32/28 (2017.01); C01B 32/378 (2017.01); C01D 15/08 (2006.01); C09C 1/48 (2006.01)

CPC C01B 32/05 (2017.08) [C01B 32/17 (2017.08); C01B 32/215 (2017.08); C01B 32/28 (2017.08); C01B 32/378 (2017.08); C01D 15/08 (2013.01); C09C 1/487 (2013.01)]

23 Claims

16. A method of separating a carbon allotrope and a salt, comprising:

adding a solid comprising the carbon allotrope and the salt to an aqueous solution,

performing a first filtration on the aqueous solution at a first temperature to remove the carbon allotrope from the aqueous solution,

adjusting the temperature of the aqueous solution to a second temperature to precipitate a first portion of the salt,

performing a second filtration on the aqueous solution at the second temperature to remove the first portion of the salt from the aqueous solution, and

adjusting the temperature of the aqueous solution to the first temperature to dissolve a second portion of the salt in the aqueous solution,

thereby separating the carbon allotrope and the salt.