Occlusion and ion exchange in the molten (lithium chloride + potassium chloride + alkaline earth chloride) salt + zeolite 4A system with alkaline earth chlorides of calcium and strontium, and in the molten (lithium chloride + potassium chloride + actinide chloride) salt + zeolite 4A system with the actinide chloride of uranium.

doi:10.1007/s11663-003-0007-z

Title: Occlusion and ion exchange in the molten (lithium chloride + potassium chloride + alkaline earth chloride) salt + zeolite 4A system with alkaline earth chlorides of calcium and strontium, and in the molten (lithium chloride + potassium chloride + actinide chloride) salt + zeolite 4A system with the actinide chloride of uranium.

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Abstract

The interaction between molten salts of the type LiCl-KCl-MeCl n (Me=Ca, Sr, U; x{sub MeCLn} $$ = to 0.45; and x {sub KCl}/x LiCl=0.69) and zeolite 4A have been studied at 823 K. The main interactions between these salts and zeolite are molten salt occlusion to form salt-loaded zeolite and ion exchange between the molten salt and salt-loaded zeolite. An irreversible chemical reaction has been observed in the LiCl-KCl-UCl{sup 3+}zeolite system. The extent of occlusion is a function of the concentration of MeCl n in the zeolite and is equal to 10{+-}1 Cl- per zeolite unit cell, (AlSiO{sub 4}){sub 12}, at infinite MeCl n dilution. The ion-exchange mole-fraction equilibrium constants (separation factors) with respect to Li are decreasing functions of the concentration of SrCl{sub 2} and UCl{sub 3}, but an increasing function of the concentration of CaCl{sub 2} in the zeolite. At infinite MeCl n dilution, they are equal to 0.9, 11.9, and 13 for CaCl{sub 2}, SrCl{sub 2}, and UCl{sub 3}, respectively. The standard ion-exchange chemical potentials are equal to -50.0, -84, and -101.1 kJ x mol-1 for Ca{sup 2+}, Sr{sup 2+}, and U{sup 3+}, respectively.

Authors:: Lexa, D.; Chemical Engineering

Publication Date:: Tue Apr 01 00:00:00 EST 2003

Research Org.:: Argonne National Lab. (ANL), Argonne, IL (United States)

Sponsoring Org.:: NE

OSTI Identifier:: 949686

Report Number(s):: ANL/CMT/JA-43306
Journal ID: ISSN 1073-5615; MTBSEO; TRN: US201012%%466

DOE Contract Number:: DE-AC02-06CH11357

Resource Type:: Journal Article

Resource Relation:: Journal Name: Metall. Mater. Trans. B; Journal Volume: 34B; Journal Issue: 2 ; Apr. 2003

Country of Publication:: United States

Language:: ENGLISH

Subject:: 36 MATERIALS SCIENCE; ACTINIDES; CALCIUM; CHEMICAL REACTIONS; CHLORIDES; DILUTION; ION EXCHANGE; LITHIUM; MOLTEN SALTS; POTASSIUM CHLORIDES; STRONTIUM; URANIUM; ZEOLITES

Citation Formats


                    Lexa, D., and Chemical Engineering. Occlusion and ion exchange in the molten (lithium chloride + potassium chloride + alkaline earth chloride) salt + zeolite 4A system with alkaline earth chlorides of calcium and strontium, and in the molten (lithium chloride + potassium chloride + actinide chloride) salt + zeolite 4A system with the actinide chloride of uranium..  United States: N. p., 2003. 
        Web.  doi:10.1007/s11663-003-0007-z.

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                    Lexa, D., & Chemical Engineering. Occlusion and ion exchange in the molten (lithium chloride + potassium chloride + alkaline earth chloride) salt + zeolite 4A system with alkaline earth chlorides of calcium and strontium, and in the molten (lithium chloride + potassium chloride + actinide chloride) salt + zeolite 4A system with the actinide chloride of uranium..  United States.  doi:10.1007/s11663-003-0007-z.

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                    Lexa, D., and Chemical Engineering. Tue .  
        "Occlusion and ion exchange in the molten (lithium chloride + potassium chloride + alkaline earth chloride) salt + zeolite 4A system with alkaline earth chlorides of calcium and strontium, and in the molten (lithium chloride + potassium chloride + actinide chloride) salt + zeolite 4A system with the actinide chloride of uranium.".  United States.  doi:10.1007/s11663-003-0007-z.

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@article{osti_949686,

  title        = {Occlusion and ion exchange in the molten (lithium chloride + potassium chloride + alkaline earth chloride) salt + zeolite 4A system with alkaline earth chlorides of calcium and strontium, and in the molten (lithium chloride + potassium chloride + actinide chloride) salt + zeolite 4A system with the actinide chloride of uranium.},

  author       = {Lexa, D. and Chemical Engineering},

  abstractNote = {The interaction between molten salts of the type LiCl-KCl-MeCl n (Me=Ca, Sr, U; x{sub MeCLn} $$ = to 0.45; and x {sub KCl}/x LiCl=0.69) and zeolite 4A have been studied at 823 K. The main interactions between these salts and zeolite are molten salt occlusion to form salt-loaded zeolite and ion exchange between the molten salt and salt-loaded zeolite. An irreversible chemical reaction has been observed in the LiCl-KCl-UCl{sup 3+}zeolite system. The extent of occlusion is a function of the concentration of MeCl n in the zeolite and is equal to 10{+-}1 Cl- per zeolite unit cell, (AlSiO{sub 4}){sub 12}, at infinite MeCl n dilution. The ion-exchange mole-fraction equilibrium constants (separation factors) with respect to Li are decreasing functions of the concentration of SrCl{sub 2} and UCl{sub 3}, but an increasing function of the concentration of CaCl{sub 2} in the zeolite. At infinite MeCl n dilution, they are equal to 0.9, 11.9, and 13 for CaCl{sub 2}, SrCl{sub 2}, and UCl{sub 3}, respectively. The standard ion-exchange chemical potentials are equal to -50.0, -84, and -101.1 kJ x mol-1 for Ca{sup 2+}, Sr{sup 2+}, and U{sup 3+}, respectively.},

  doi          = {10.1007/s11663-003-0007-z},

  journal      = {Metall. Mater. Trans. B},

  number       = 2 ; Apr. 2003,

  volume       = 34B,

  place        = {United States},

  year         = {Tue Apr 01 00:00:00 EST 2003},

  month        = {Tue Apr 01 00:00:00 EST 2003}

}

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DOI: 10.1007/s11663-003-0007-z

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