Published 1997 | Version v1
Journal article Metadata-only

Thermochromatography of heavy actinides - determination of the sublimation enthalpy of Es

Creators

  • 1. Forschungszentrum Rossendorf e.V. (FZR) (Germany). Inst. fuer Radiochemie
  • 2. Paul Scherrer Inst. (PSI), Villigen (Switzerland). Lab. fuer Radio- und Umweltchemie
  • 3. Bern Univ. (Switzerland). Dept. fuer Chemie und Biochemie
  • 4. Gesellschaft fuer Schwerionenforschung mbH, Darmstadt (Germany)
  • 5. JINR, Dubna (Russian Federation). Lab. of Nucl. Reactions

Description

The adsorption of Cf, Es, and Fm on several metals was studied thermochromatographically. In all systems investigated Es is adsorbed between the Cf and Fm, due to the increasing metallic divalency in the second half of the actinide series. Based on the adsorption data and the experimentally proved correlation between adsorption and sublimation heats we calculated the Es sublimation enthalpy of 167 kJ/mol. This is significantly higher than the value obtained by direct vapour pressure measurements (133 kJ/mol). However, this value fits better to theory. (orig.)

Additional details

Publishing Information

Journal Title
Radiochimica Acta
Journal Volume
78
Journal Page Range
p. 33-38.
ISSN
0033-8230
CODEN
RAACAP

Conference

Title
International symposium on nuclear and radiochemistry.
Dates
8-13 Sep 1996.
Place
Saint Malo (France).

INIS

Country of Publication
Germany
Country of Input or Organization
Germany
INIS RN
29022542
Subject category
S37: INORGANIC, ORGANIC, PHYSICAL AND ANALYTICAL CHEMISTRY; S38: RADIATION CHEMISTRY, RADIOCHEMISTRY AND NUCLEAR CHEMISTRY;
Resource subtype / Literary indicator
Conference
Descriptors DEI
ADSORPTION; CALIFORNIUM; EINSTEINIUM; FERMIUM; SUBLIMATION HEAT; THERMOCHROMATOGRAPHY
Descriptors DEC
ACTINIDES; CHROMATOGRAPHY; ELEMENTS; ENTHALPY; METALS; PHYSICAL PROPERTIES; SEPARATION PROCESSES; SORPTION; THERMODYNAMIC PROPERTIES; TRANSITION HEAT; TRANSPLUTONIUM ELEMENTS; TRANSURANIUM ELEMENTS