Cocrystallization from the vapor accompanied by decomposition of the initial form of the minor component. III. Trapping of iron and niobium by zirconium chloride on flow sublimation

Journal Article · Thu Jan 01 04:00:00 EST 1987 · Sov. Radiochem. (Engl. Transl.); (United States)

OSTI ID:7202382

Lebedev, V Ya; Berdonosov, S S; Melikhov, I V

Moessbauer spectroscopy has been used to show that traces of iron added to the vapor of ZrCl/sub 4/ in the form of FeCl/sub 3/ are trapped mainly in the form of FeCl/sub 2/ on condensation from the flowing helium. Additional evidence for the iron entering the solid only in one form is provided by the constancy of the trapping factor lambda as the initial supersaturation or minor-component content is varied, as well as by the constancy of lambda in the parts of the thermostatic tube. Similarly, constant lambda occur when traces of niobium enter solid ZrCl/sub 4/ from NbOCl/sub 3/ added to the vapor (lambda has been determined with /sub 55/Fe and /sub 95/Nb). Traces of niobium enter ZrCl/sub 4/ in a single form, most probably NbCl/sub 5/, which is formed by reaction between NbOCl/sub 3/ and ZrCl/sub 4/ at elevated temperatures.

• OSTI ID: 7202382
• Journal Information: Sov. Radiochem. (Engl. Transl.); (United States), Journal Name: Sov. Radiochem. (Engl. Transl.); (United States) Vol. 29:3; ISSN SVRDA
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
360602* -- Other Materials-- Structure & Phase Studies
37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
400202 -- Isotope Effects
Isotope Exchange
& Isotope Separation
BETA DECAY RADIOISOTOPES
BETA-MINUS DECAY RADIOISOTOPES
CHEMICAL COATING
CHEMICAL PREPARATION
CHEMICAL VAPOR DEPOSITION
CHLORIDES
CHLORINE COMPOUNDS
CRYSTALLIZATION
DAYS LIVING RADIOISOTOPES
DEPOSITION
ELECTRON CAPTURE RADIOISOTOPES
ELEMENTS
EVAPORATION
EVEN-ODD NUCLEI
FLUIDS
GAMMA SPECTRA
GASES
HALIDES
HALOGEN COMPOUNDS
IMPURITIES
INTERMEDIATE MASS NUCLEI
IRON
IRON 55
IRON CHLORIDES
IRON COMPOUNDS
IRON ISOTOPES
ISOMERIC TRANSITION ISOTOPES
ISOTOPE APPLICATIONS
ISOTOPES
LABELLED COMPOUNDS
MATHEMATICAL MODELS
METALS
MOESSBAUER EFFECT
NIOBIUM
NIOBIUM 95
NIOBIUM COMPOUNDS
NIOBIUM ISOTOPES
NUCLEI
ODD-EVEN NUCLEI
OXYCHLORIDES
OXYGEN COMPOUNDS
PHASE STUDIES
PHASE TRANSFORMATIONS
RADIOISOTOPES
REFRACTORY METAL COMPOUNDS
SPECTRA
SUBLIMATION
SURFACE COATING
SYNTHESIS
TRACER TECHNIQUES
TRANSITION ELEMENT COMPOUNDS
TRANSITION ELEMENTS
TRAPPING
VAPORS
YEARS LIVING RADIOISOTOPES
ZIRCONIUM CHLORIDES
ZIRCONIUM COMPOUNDS