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:
-
- Walnut Creek, CA
- Issue Date:
- Research Org.:
- Dow Chemical
- OSTI Identifier:
- 863665
- Patent Number(s):
- 4225395
- Assignee:
- Dow Chemical Company (Midland, MI)
- Patent Classifications (CPCs):
-
H - ELECTRICITY H01 - BASIC ELECTRIC ELEMENTS H01M - PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
Y - NEW / CROSS SECTIONAL TECHNOLOGIES Y02 - TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE Y02E - REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- 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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