The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jun. 23, 2020
Filed:
Apr. 22, 2016
Ut-battelle, Llc, Oak Ridge, TN (US);
John William Freiderich, Oak Ridge, TN (US);
Huimin Luo, Knoxville, TN (US);
Bruce A. Moyer, Oak Ridge, TN (US);
Sheng Dai, Knoxville, TN (US);
UT-Battelle, LLC, Oak Ridge, TN (US);
Abstract
A method for extracting a rare earth element from a rare earth-containing substance, the method comprising mixing the rare earth-containing substance with a protic ionic liquid, such as: wherein Ris selected from hydrogen atom and hydrocarbon groups containing 1 to 6 carbon atoms; Rand Rare independently selected from hydrocarbon groups containing 1 to 12 carbon atoms; and Xis an anionic species; to produce a composition of the formula (RE)(amide)Xat least partially dissolved in the protic ionic liquid, wherein RE is at least one rare earth element having an atomic number selected from 39, 57-71, and 90-103; y is 2-6; z is a number that charge balances the total positive charge of RE; and the amide is the conjugate base of the cationic portion of the protic ionic liquid of Formula (1) and has the following formula: