Extractant composition including crown ether and calixarene extractants

US7524469B2 · kind B2 · utility

Assignee

• Battelle Energy Alliance, LLC · US

Inventors

• David H. Meikrantz · Idaho Falls, US
• Terry A. Todd · Aberdeen, US
• Catherine Lynn Riddle · Idaho Falls, US
• Jack D. Law · Pocatello, US
• Dean R. Peterman · Idaho Falls, US
• Bruce J. Mincher · Shelley, US
• Christopher A. McGrath · Blackfoot, US
• John Dayton Baker, Jr. · Kingsport, US

Key dates

• Filing date: Sep 21, 2007
• Grant date: Apr 28, 2009
• Expiry date: Sep 21, 2027

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y02P10/20
• WIPO field: Materials, metallurgy
• WIPO sector: Chemistry

Abstract

An extractant composition comprising a mixed extractant solvent consisting of calix[4] arene-bis-(tert-octylbenzo)-crown-6 (“BOBCalixC6”), 4′,4′,(5′)-di-(t-butyldicyclo-hexano)-18-crown-6 (“DtBu18C6”), and at least one modifier dissolved in a diluent. The DtBu18C6 may be present at from approximately 0.01M to approximately 0.4M, such as at from approximately 0.086 M to approximately 0.108 M. The modifier may be 1-(2,2,3,3-tetrafluoropropoxy)-3-(4-sec-butylphenoxy)-2-propanol (“Cs-7SB”) and may be present at from approximately 0.01M to approximately 0.8M. In one embodiment, the mixed extractant solvent includes approximately 0.15M DtBu18C6, approximately 0.007M BOBCalixC6, and approximately 0.75M Cs-7SB modifier dissolved in an isoparaffinic hydrocarbon diluent. The extractant composition further comprises an aqueous phase. The mixed extractant solvent may be used to remove cesium and strontium from the aqueous phase.