Extraction of rare earth oxides using supercritical carbon dioxide modified with Tri-n-butyl phosphate–nitric acid adducts

Baek, Donna L.; Fox, Robert V.; Case, Mary E.; Sinclair, Laura K.; Schmidt, Alex B.; McIlwain, Patrick R.; Mincher, Bruce J.; Wai, Chien M.

doi:10.1021/acs.iecr.6b00554

Title: Extraction of rare earth oxides using supercritical carbon dioxide modified with Tri-n-butyl phosphate–nitric acid adducts

Abstract

A new tri-n-butylphosphate–nitric acid (TBP–HNO₃) adduct was prepared by combining TBP and fuming (90%) HNO₃. The adduct was characterized, and its phase-equilibrium behavior in supercritical carbon dioxide is reported. Supercritical carbon dioxide (sc-CO₂) was modified with this new adduct [TBP(HNO₃)_5.2(H₂O)_1.7], and the extraction efficacies of selected rare earth oxides (Y, Ce, Eu, Tb, and Dy) at 338 K and 34.5 MPa were compared with those obtained using an adduct formed from concentrated (70%) HNO₃ and TBP [TBP(HNO₃)_1.7(H₂O)_0.6]. All rare earth oxides tested with both adduct species could be extracted with the exception of cerium oxide. Furthermore, the water and acid concentrations in the different adducts were found to play a significant role in rare earth oxide extraction efficiency.

Authors:

Baek, Donna L. ^[1]; Fox, Robert V. ^[1]; Case, Mary E. ^[2]; Sinclair, Laura K. ^[3]; Schmidt, Alex B. ^[4]; McIlwain, Patrick R. ^[5]; Mincher, Bruce J. ^[6]; Wai, Chien M. ^[7]

Idaho National Lab. (INL), Idaho Falls, ID (United States)
Idaho National Lab. (INL), Idaho Falls, ID (United States); Univ. of Idaho, Moscow, ID (United States)
Cornell Univ., Ithaca, NY (United States)
Boise State Univ., ID (United States)
Montana State Univ., Bozeman, MT (United States)
Idaho State Univ., Pocatello, ID (United States)
Univ. of Idaho, Moscow, ID (United States)

Publication Date:: Tue Jun 14 00:00:00 EDT 2016

Research Org.:: Idaho National Lab. (INL), Idaho Falls, ID (United States)

Sponsoring Org.:: USDOE Office of Energy Efficiency and Renewable Energy (EERE)

OSTI Identifier:: 1259494

Report Number(s):: INL/JOU-16-37836
Journal ID: ISSN 0888-5885; PII: S0029549315005956

Grant/Contract Number:: AC07-05ID14517

Resource Type:: Accepted Manuscript

Journal Name:: Industrial and Engineering Chemistry Research

Additional Journal Information:: Journal Name: Industrial and Engineering Chemistry Research; Journal ID: ISSN 0888-5885

Publisher:: American Chemical Society (ACS)

Country of Publication:: United States

Language:: English

Subject:: 37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY; lanthanide oxides; supercritical carbon dioxide; phase equilibria; acid adduct; extraction

Citation Formats


                    Baek, Donna L., Fox, Robert V., Case, Mary E., Sinclair, Laura K., Schmidt, Alex B., McIlwain, Patrick R., Mincher, Bruce J., and Wai, Chien M. Extraction of rare earth oxides using supercritical carbon dioxide modified with Tri-n-butyl phosphate–nitric acid adducts.  United States: N. p., 2016. 
Web.  doi:10.1021/acs.iecr.6b00554.

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                    Baek, Donna L., Fox, Robert V., Case, Mary E., Sinclair, Laura K., Schmidt, Alex B., McIlwain, Patrick R., Mincher, Bruce J., & Wai, Chien M. Extraction of rare earth oxides using supercritical carbon dioxide modified with Tri-n-butyl phosphate–nitric acid adducts.  United States.  https://doi.org/10.1021/acs.iecr.6b00554

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                    Baek, Donna L., Fox, Robert V., Case, Mary E., Sinclair, Laura K., Schmidt, Alex B., McIlwain, Patrick R., Mincher, Bruce J., and Wai, Chien M. Tue .  
"Extraction of rare earth oxides using supercritical carbon dioxide modified with Tri-n-butyl phosphate–nitric acid adducts".  United States.  https://doi.org/10.1021/acs.iecr.6b00554.  https://www.osti.gov/servlets/purl/1259494.

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@article{osti_1259494,

  title        = {Extraction of rare earth oxides using supercritical carbon dioxide modified with Tri-n-butyl phosphate–nitric acid adducts},

  author       = {Baek, Donna L. and Fox, Robert V. and Case, Mary E. and Sinclair, Laura K. and Schmidt, Alex B. and McIlwain, Patrick R. and Mincher, Bruce J. and Wai, Chien M.},

  abstractNote = {A new tri-n-butylphosphate–nitric acid (TBP–HNO3) adduct was prepared by combining TBP and fuming (90%) HNO3. The adduct was characterized, and its phase-equilibrium behavior in supercritical carbon dioxide is reported. Supercritical carbon dioxide (sc-CO2) was modified with this new adduct [TBP(HNO3)5.2(H2O)1.7], and the extraction efficacies of selected rare earth oxides (Y, Ce, Eu, Tb, and Dy) at 338 K and 34.5 MPa were compared with those obtained using an adduct formed from concentrated (70%) HNO3 and TBP [TBP(HNO3)1.7(H2O)0.6]. All rare earth oxides tested with both adduct species could be extracted with the exception of cerium oxide. Furthermore, the water and acid concentrations in the different adducts were found to play a significant role in rare earth oxide extraction efficiency.},

  doi          = {10.1021/acs.iecr.6b00554},

  journal      = {Industrial and Engineering Chemistry Research},

  number       = ,

  volume       = ,

  place        = {United States},

  year         = {Tue Jun 14 00:00:00 EDT 2016},

  month        = {Tue Jun 14 00:00:00 EDT 2016}

}

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Title: Extraction of rare earth oxides using supercritical carbon dioxide modified with Tri-n-butyl phosphate–nitric acid adducts

Abstract

Citation Formats

Towards zero-waste valorisation of rare-earth-containing industrial process residues: a critical review journal, July 2015

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Treatment of fluid catalytic cracking spent catalysts to recover lanthanum and cerium: Comparison between selective precipitation and solvent extraction journal, April 2015

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Recovery Process Development for the Rare Earths from Permanent Magnet Scraps Leach Liquors journal, January 2015

Leaching of rare earths from bauxite residue (red mud) journal, May 2015

Extraction of metal ions from liquid and solid materials by supercritical carbon dioxide journal, November 1992

Solubility of fluorinated metal diethyldithiocarbamates in Supercritical carbon dioxide journal, September 1991

Extraction of Actinides and Lanthanides by Supercritical Fluid journal, December 2010

Kinetics of Reactive Extraction of Nd from Nd2O3 with TBP-HNO3 Complex in Supercritical Carbon Dioxide journal, April 2009

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journal, December 2010

Kinetics of Reactive Extraction of Nd from Nd2O3 with TBP-HNO3 Complex in Supercritical Carbon Dioxide
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Praseodymium nitrate and neodymium nitrate complexation with organophosphorus reagents in supercritical carbon dioxide solvent
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Holmium nitrate complexation with tri-n-butyl phosphate in supercritical carbon dioxide
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Characterization of a Tri- n -butyl Phosphate−Nitric Acid Complex: a CO ₂ -Soluble Extractant for Dissolution of Uranium Dioxide
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Ft-Ir Spectroscopy of Nitric acid in Tbp/Octane Solution1*
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Dinitrogen tetroxide, nitric acid, and their mixtures as media for inorganic reactions
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Ligands for f-element extraction used in the nuclear fuel cycle
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Lanthanide extraction selectivity of a tripodal carbamoylmethylphosphine oxide ligand system
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