Kinetic Ion Exchange Studies in Ultramarines by the Radioactive Tracer Method; ETUDES CINETIQUES D'ECHANGES D'IONS DANS LES OUTREMERS PAR LA TECHNIQUE DES TRACEURS RADIOACTIFS

Technical Report · Fri Jan 01 04:00:00 EST 1960

OSTI ID:4162765

May, S; Goenvec, H; Pinte, G

The possibility of ion exchanges in various ultramarines has been studied in the aqueous phase. The kinetics of the exchange reactions is followed by studying the behavior of a radioactive ion, either in the solution of the exchanging salt or in the ultramarine itself. The sodium in the makeup of the ultramarine is found to exchange with various ions in solution. The reaction speeds appear to be governed by a diffusion process inside the grains of ultramarine. The diffusion coefficients and the activation enengies are determined for the exchange studied. Several exchange studies were carried out in an organic medium. The kinetics of ion exchange is also investigated in ultramarines from which most of the constituant sulfur has been eliminated. The results obtained in these ultramarines are compared with the exchange kinetics of the same ions in ordinary ultramarine. (auth)

• Research Organization: France. Commissariat a l'Energie Atomique, Paris
• NSA Number: NSA-14-013542
• OSTI ID: 4162765
• Report Number(s): CEA-1364
• Country of Publication: France
• Language: English

Related Subjects

ACTIVATION
BIOLOGY AND MEDICINE
DIFFUSION
ENERGY
GRAIN SIZE
ION EXCHANGE
IONS
PIGMENTS
QUANTITATIVE ANALYSIS
RADIOISOTOPES
REACTION KINETICS
SALTS
SODIUM
SOLUTIONS
SULFUR
TRACER TECHNIQUES
ULTRAMARINE