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Title: Removal of oxides from alkali metal melts by reductive titration to electrical resistance-change end points

Abstract

Alkali metal oxides dissolved in alkali metal melts are reduced with soluble metals which are converted to insoluble oxides. The end points of the reduction is detected as an increase in electrical resistance across an alkali metal ion-conductive membrane interposed between the oxide-containing melt and a material capable of accepting the alkali metal ions from the membrane when a difference in electrical potential, of the appropriate polarity, is established across it. The resistance increase results from blocking of the membrane face by ions of the excess reductant metal, to which the membrane is essentially non-conductive.

Inventors:
 [1]
  1. (Walnut Creek, CA)
Issue Date:
Research Org.:
Dow Chemical
OSTI Identifier:
863665
Patent Number(s):
4225395
Assignee:
Dow Chemical Company (Midland, MI) OSTI
DOE Contract Number:  
EY-76-C-02-2565
Resource Type:
Patent
Country of Publication:
United States
Language:
English
Subject:
removal; oxides; alkali; metal; melts; reductive; titration; electrical; resistance-change; dissolved; reduced; soluble; metals; converted; insoluble; reduction; detected; increase; resistance; ion-conductive; membrane; interposed; oxide-containing; melt; material; capable; accepting; difference; potential; appropriate; polarity; established; results; blocking; excess; reductant; essentially; non-conductive; electrical potential; alkali metal; metal oxide; electrical resistance; metal oxides; soluble metal; material capable; metal melts; metal melt; soluble oxide; /205/429/

Citation Formats

Tsang, Floris Y. Removal of oxides from alkali metal melts by reductive titration to electrical resistance-change end points. United States: N. p., 1980. Web.
Tsang, Floris Y. Removal of oxides from alkali metal melts by reductive titration to electrical resistance-change end points. United States.
Tsang, Floris Y. Tue . "Removal of oxides from alkali metal melts by reductive titration to electrical resistance-change end points". United States. https://www.osti.gov/servlets/purl/863665.
@article{osti_863665,
title = {Removal of oxides from alkali metal melts by reductive titration to electrical resistance-change end points},
author = {Tsang, Floris Y.},
abstractNote = {Alkali metal oxides dissolved in alkali metal melts are reduced with soluble metals which are converted to insoluble oxides. The end points of the reduction is detected as an increase in electrical resistance across an alkali metal ion-conductive membrane interposed between the oxide-containing melt and a material capable of accepting the alkali metal ions from the membrane when a difference in electrical potential, of the appropriate polarity, is established across it. The resistance increase results from blocking of the membrane face by ions of the excess reductant metal, to which the membrane is essentially non-conductive.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {1980},
month = {1}
}

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