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Title: Lewis-Acid/Base Effects on Gallium Volatility in Molten Chlorides

Abstract

It has been proposed that GaCl{sub 3} can be removed by direct volatilization from a Pu-Ga alloy that is dissolved in a molten chloride salt. Although pure GaCl{sub 3} is quite volatile (boiling point, 201 C), the behavior of GaCl{sub 3} dissolved in chloride salts is different due to solution effects and is critically dependent on the composition of the solvent salt (i.e., its Lewis-acid/base character). In this report, the behavior of gallium in prototypical Lewis-acid and Lewis-base salts is compared. It was found that gallium volatility is suppressed in basic melts and enhanced in acidic melts. The implications of these results on the potential for simple gallium removal in molten salt systems are significant.

Authors:
Publication Date:
Research Org.:
Oak Ridge National Lab., TN (US)
Sponsoring Org.:
US Department of Energy (US)
OSTI Identifier:
777695
Report Number(s):
ORNL/TM-2000/297
TRN: US0102061
DOE Contract Number:  
AC05-96OR22464
Resource Type:
Technical Report
Resource Relation:
Other Information: PBD: 26 Feb 2001
Country of Publication:
United States
Language:
English
Subject:
11 NUCLEAR FUEL CYCLE AND FUEL MATERIALS; GALLIUM CHLORIDES; REMOVAL; PLUTONIUM ALLOYS; GALLIUM ALLOYS; EVAPORATION; GALLIUM; MOLTEN SALTS; SOLVENTS; VOLATILITY; PH VALUE

Citation Formats

Williams, D.F. Lewis-Acid/Base Effects on Gallium Volatility in Molten Chlorides. United States: N. p., 2001. Web. doi:10.2172/777695.
Williams, D.F. Lewis-Acid/Base Effects on Gallium Volatility in Molten Chlorides. United States. doi:10.2172/777695.
Williams, D.F. Mon . "Lewis-Acid/Base Effects on Gallium Volatility in Molten Chlorides". United States. doi:10.2172/777695. https://www.osti.gov/servlets/purl/777695.
@article{osti_777695,
title = {Lewis-Acid/Base Effects on Gallium Volatility in Molten Chlorides},
author = {Williams, D.F.},
abstractNote = {It has been proposed that GaCl{sub 3} can be removed by direct volatilization from a Pu-Ga alloy that is dissolved in a molten chloride salt. Although pure GaCl{sub 3} is quite volatile (boiling point, 201 C), the behavior of GaCl{sub 3} dissolved in chloride salts is different due to solution effects and is critically dependent on the composition of the solvent salt (i.e., its Lewis-acid/base character). In this report, the behavior of gallium in prototypical Lewis-acid and Lewis-base salts is compared. It was found that gallium volatility is suppressed in basic melts and enhanced in acidic melts. The implications of these results on the potential for simple gallium removal in molten salt systems are significant.},
doi = {10.2172/777695},
journal = {},
number = ,
volume = ,
place = {United States},
year = {2001},
month = {2}
}

Technical Report:

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