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Determination of the dissociation constant of molten Li/sub 2/CO/sub 3//Na/sub 2/CO/sub 3//K/sub 2/CO/sub 3/ using a stabilized zirconia oxide-ion indicator

Abstract

An Li/sub 2/CO/sub 3//Na/sub 2/CO/sub 3//K/sub 2/CO/sub 3/ eutectic melt has been selected as an example of a molten-carbonate system and the suitability of a stabilized zirconia-air electrode as an oxide-ion concentration indicator for this melt has been confirmed. With this indicator, the dissociation constant of the reaction CO/sub 3//sup 2 -/(l)=CO/sub 2/(g)+O/sup 2 -/(l) in this melt has been determined to be Ksub(d)=P sub(CO/sub 2/) (O/sup 2 -/)=4.03 x 10/sup -3/ Pa at 873 K. Reproducible measurements were obtained throughout the experiment and this method might find further application in the study of reactions related to the oxide ion in carbonate melts. (orig.).
Publication Date:
Sep 01, 1985
Product Type:
Journal Article
Reference Number:
DE-86-002317; EDB-86-052889
Resource Relation:
Journal Name: J. Power Sources; (Switzerland); Journal Volume: 16:1
Subject:
37 INORGANIC, ORGANIC, PHYSICAL AND ANALYTICAL CHEMISTRY; LITHIUM CARBONATES; DISSOCIATION; MOLTEN SALTS; ION SELECTIVE ELECTRODE ANALYSIS; POTASSIUM CARBONATES; SODIUM CARBONATES; CARBON DIOXIDE; ELECTROCHEMICAL CELLS; EUTECTICS; OXYGEN IONS; OXYGEN METERS; PARTIAL PRESSURE; SOLID ELECTROLYTES; ALKALI METAL COMPOUNDS; CARBON COMPOUNDS; CARBON OXIDES; CARBONATES; CHALCOGENIDES; CHARGED PARTICLES; CHEMICAL ANALYSIS; ELECTROLYTES; IONS; LITHIUM COMPOUNDS; MEASURING INSTRUMENTS; METERS; OXIDES; OXYGEN COMPOUNDS; POTASSIUM COMPOUNDS; SALTS; SODIUM COMPOUNDS; 400201* - Chemical & Physicochemical Properties
OSTI ID:
5982013
Research Organizations:
Kyoto Univ., Japan. Dept. of Nuclear Engineering; Government Industrial Research Inst., Osaka, Japan. Fuel Cell Section
Country of Origin:
Switzerland
Language:
English
Other Identifying Numbers:
Journal ID: CODEN: JPSOD
Submitting Site:
DE
Size:
Pages: 75-82
Announcement Date:
Mar 01, 1986

Citation Formats

Ito, Yasuhiko, Tsuru, Kiyoshi, Oishi, Jun, Miyazaki, Yoshinori, and Kodama, Teruo. Determination of the dissociation constant of molten Li/sub 2/CO/sub 3//Na/sub 2/CO/sub 3//K/sub 2/CO/sub 3/ using a stabilized zirconia oxide-ion indicator. Switzerland: N. p., 1985. Web. doi:10.1016/0378-7753(85)80005-7.
Ito, Yasuhiko, Tsuru, Kiyoshi, Oishi, Jun, Miyazaki, Yoshinori, & Kodama, Teruo. Determination of the dissociation constant of molten Li/sub 2/CO/sub 3//Na/sub 2/CO/sub 3//K/sub 2/CO/sub 3/ using a stabilized zirconia oxide-ion indicator. Switzerland. doi:10.1016/0378-7753(85)80005-7.
Ito, Yasuhiko, Tsuru, Kiyoshi, Oishi, Jun, Miyazaki, Yoshinori, and Kodama, Teruo. 1985. "Determination of the dissociation constant of molten Li/sub 2/CO/sub 3//Na/sub 2/CO/sub 3//K/sub 2/CO/sub 3/ using a stabilized zirconia oxide-ion indicator." Switzerland. doi:10.1016/0378-7753(85)80005-7. https://www.osti.gov/servlets/purl/10.1016/0378-7753(85)80005-7.
@misc{etde_5982013,
title = {Determination of the dissociation constant of molten Li/sub 2/CO/sub 3//Na/sub 2/CO/sub 3//K/sub 2/CO/sub 3/ using a stabilized zirconia oxide-ion indicator}
author = {Ito, Yasuhiko, Tsuru, Kiyoshi, Oishi, Jun, Miyazaki, Yoshinori, and Kodama, Teruo}
abstractNote = {An Li/sub 2/CO/sub 3//Na/sub 2/CO/sub 3//K/sub 2/CO/sub 3/ eutectic melt has been selected as an example of a molten-carbonate system and the suitability of a stabilized zirconia-air electrode as an oxide-ion concentration indicator for this melt has been confirmed. With this indicator, the dissociation constant of the reaction CO/sub 3//sup 2 -/(l)=CO/sub 2/(g)+O/sup 2 -/(l) in this melt has been determined to be Ksub(d)=P sub(CO/sub 2/) (O/sup 2 -/)=4.03 x 10/sup -3/ Pa at 873 K. Reproducible measurements were obtained throughout the experiment and this method might find further application in the study of reactions related to the oxide ion in carbonate melts. (orig.).}
doi = {10.1016/0378-7753(85)80005-7}
journal = {J. Power Sources; (Switzerland)}
volume = {16:1}
journal type = {AC}
place = {Switzerland}
year = {1985}
month = {Sep}
}