Authors:
A. Hadj Mebarek Ecole Nationale Supérieure de Chimie de Mulhouse, Université de Haute-Alsace, 3, Rue Alfred Werner, F-68093 Mulhouse Cedex, France

Search for other papers by A. Hadj Mebarek in
Current site
Google Scholar
PubMed
Close
,
S. Walter Ecole Nationale Supérieure de Chimie de Mulhouse, Université de Haute-Alsace, 3, Rue Alfred Werner, F-68093 Mulhouse Cedex, France

Search for other papers by S. Walter in
Current site
Google Scholar
PubMed
Close
, and
S. Diyani Ecole Nationale Supérieure de Chimie de Mulhouse, Université de Haute-Alsace, 3, Rue Alfred Werner, F-68093 Mulhouse Cedex, France

Search for other papers by S. Diyani in
Current site
Google Scholar
PubMed
Close
Restricted access

Abstract

Pure alkali metal preparation is a complex problem: in most available commercial samples, all of them are simultaneously present. Conventional separation techniques are not always effective enough to reach parts per million total impurity levels. However, near the melting point, superficial segregation occurs. A zone melting derived technique coupled with a specifically developed solvent extraction process allows the total impurity content of sodium to be lowered below a few parts per million. The described thermal process, although using chemical reactions, is purely physically steered: it purifies as well potassium containing sodium as sodium containing potassium. 4 alkali metals are considered: Li, Na; K, and Cs.

  • 1 Walter, S. Aleboyeh, A. 1996 Fresenius' J. Anal. Chem. 355 687687.

  • 2 Walter, S., Thesis, UHA No. 06811664, (19/12/87), Mulhouse, France, p. 120, 195–200.

  • 3 Brown, A. M. Ashby, M. F. S. 1980 Acta Metallurgica 28 10851085. .

  • 4 Landolt-Börnstein 1969 Zahlenwerte und Funktionen Transport Phänomene-1,2 Springer Verlag Berlin 55.

  • 5 Hansen, M. Anderko, K. 1958 Constitution of binary alloys Mac Graw Hill London 577577.

  • Collapse
  • Expand

To see the editorial board, please visit the website of Springer Nature.

Manuscript Submission: HERE

For subscription options, please visit the website of Springer Nature.

Journal of Thermal Analysis and Calorimetry
Language English
Size A4
Year of
Foundation
1969
Volumes
per Year
1
Issues
per Year
24
Founder Akadémiai Kiadó
Founder's
Address
H-1117 Budapest, Hungary 1516 Budapest, PO Box 245.
Publisher Akadémiai Kiadó
Springer Nature Switzerland AG
Publisher's
Address
H-1117 Budapest, Hungary 1516 Budapest, PO Box 245.
CH-6330 Cham, Switzerland Gewerbestrasse 11.
Responsible
Publisher
Chief Executive Officer, Akadémiai Kiadó
ISSN 1388-6150 (Print)
ISSN 1588-2926 (Online)

Monthly Content Usage

Abstract Views Full Text Views PDF Downloads
Jan 2024 17 1 0
Feb 2024 3 0 0
Mar 2024 2 0 0
Apr 2024 32 0 0
May 2024 1 0 0
Jun 2024 4 0 0
Jul 2024 0 0 0