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Contribution to the study of hydrogenated and oxygenated impurities in liquid sodium; Contribution a l'etude des impuretees hydrogenees et oxygenees dans le sodium liquide

Abstract

This study is made up essentially of two parts. The first is devoted to the development of dosage methods for selectively determining the oxygenated and hydrogenated impurities present in sodium, that is the oxide, the hydride and the hydroxide. The second makes use of these methods for a study of the Na-H{sub 2}-O{sub 2} system, as well as of the related problem of the attack of pyrex glass by molten sodium. The conventional method for dosing oxygen by amalgamation was first adapted to the simultaneous measurement of the hydride. We then developed a method for dosing the total hydrogen by measuring successively the concentrations of gas present in the hydride and hydroxide form. This method is based on the thermal decomposition of the hydride and the reaction between sodium and the hydroxide. Our contribution to the study of the Na-H{sub 2}-O{sub 2} System consists first of all in the study of the reaction between hydrogen and sodium in the temperature range from 150 to 250 deg C and at a pressure of about 150 mm of mercury. The study of the thermal decomposition of the hydride in sodium was then studied. It was possible to make some qualitative observations concerning  More>>
Authors:
Naud, G [1] 
  1. Commissariat a l'Energie Atomique, Saclay (France). Centre d'Etudes Nucleaires
Publication Date:
Jul 15, 1964
Product Type:
Thesis/Dissertation
Report Number:
CEA-R-2583
Resource Relation:
Other Information: TH: These docteur ingenieur; 35 refs
Subject:
37 INORGANIC, ORGANIC, PHYSICAL AND ANALYTICAL CHEMISTRY; CHEMICAL REACTION KINETICS; HYDRIDES; HYDROXIDES; IMPURITIES; OXIDES; PYREX; PYROLYSIS; QUANTITATIVE CHEMICAL ANALYSIS; SODIUM; TEMPERATURE RANGE 0400-1000 K
OSTI ID:
20795941
Research Organizations:
CEA Saclay, 91 - Gif-sur-Yvette (France); Feculte des Sciences de l'Universite de Rennes, 35 (France)
Country of Origin:
France
Language:
French
Other Identifying Numbers:
TRN: FR06R2583097978
Availability:
Available from INIS in electronic form
Submitting Site:
FRN
Size:
60 pages
Announcement Date:
Dec 19, 2006

Citation Formats

Naud, G. Contribution to the study of hydrogenated and oxygenated impurities in liquid sodium; Contribution a l'etude des impuretees hydrogenees et oxygenees dans le sodium liquide. France: N. p., 1964. Web.
Naud, G. Contribution to the study of hydrogenated and oxygenated impurities in liquid sodium; Contribution a l'etude des impuretees hydrogenees et oxygenees dans le sodium liquide. France.
Naud, G. 1964. "Contribution to the study of hydrogenated and oxygenated impurities in liquid sodium; Contribution a l'etude des impuretees hydrogenees et oxygenees dans le sodium liquide." France.
@misc{etde_20795941,
title = {Contribution to the study of hydrogenated and oxygenated impurities in liquid sodium; Contribution a l'etude des impuretees hydrogenees et oxygenees dans le sodium liquide}
author = {Naud, G}
abstractNote = {This study is made up essentially of two parts. The first is devoted to the development of dosage methods for selectively determining the oxygenated and hydrogenated impurities present in sodium, that is the oxide, the hydride and the hydroxide. The second makes use of these methods for a study of the Na-H{sub 2}-O{sub 2} system, as well as of the related problem of the attack of pyrex glass by molten sodium. The conventional method for dosing oxygen by amalgamation was first adapted to the simultaneous measurement of the hydride. We then developed a method for dosing the total hydrogen by measuring successively the concentrations of gas present in the hydride and hydroxide form. This method is based on the thermal decomposition of the hydride and the reaction between sodium and the hydroxide. Our contribution to the study of the Na-H{sub 2}-O{sub 2} System consists first of all in the study of the reaction between hydrogen and sodium in the temperature range from 150 to 250 deg C and at a pressure of about 150 mm of mercury. The study of the thermal decomposition of the hydride in sodium was then studied. It was possible to make some qualitative observations concerning the reaction between sodium and sodium hydroxide. Finally some complementary tests made it possible to define the nature of the phenomena occurring during the attack of pyrex glass by sodium. (author) [French] Cette etude comporte essentiellement deux parties. La premiere est consacree a la mise au point de methodes de dosages permettant de determiner selectivement les impuretes oxygenees et hydrogenees presentes dans le sodium, a savoir l'oxyde, l'hydrure et l'hydroxyde. La seconde met a profit ces methodes en vue de l'etude du systeme Na-H{sub 2}-O{sub 2}. ainsi que du phenomene connexe d'attaque du verre pyrex par le sodium fondu. La methode classique de dosage de l'oxygene par amalgamation a d'abord ete adaptee au dosage simultane de l'hydrure. Nous avons ensuite mis au point le dosage de l'hydrogene total, en determinant successivement les concentrations en gaz present sous forme d'hydrure et d'hydroxyde. Cette methode est basee sur la decomposition thermique de l'hydrure et la reaction entre le sodium et l'hydroxyde. Notre contribution a l'etude du systeme Na-H{sub 2}-O{sub 2} comporte tout d'abord l'etude de la reaction de l'hydrogene avec le sodium dans l'intervalle de temperature 150-250 deg C et sous une pression de 150 mm de mercure environ. L'etude de la decomposition thermique de l'hydrure au sein du sodium a ete ensuite effectuee. Quelques indications qualitatives concernant la reaction entre le sodium et l'hydroxyde de sodium ont pu etre degagees. Enfin quelques essais complementaires nous ont permis de preciser la nature des phenomenes intervenant lors de l'attaque du verre pyrex par le sodium. (auteur)}
place = {France}
year = {1964}
month = {Jul}
}