KINETIC ISOTOPIC EFFECTS IN THE REACTION OF URANIUM DISPROPORTIONATION (V) IN H2O AND D2O

Citation
A. Calusaru et al., KINETIC ISOTOPIC EFFECTS IN THE REACTION OF URANIUM DISPROPORTIONATION (V) IN H2O AND D2O, Revista de chimie, 45(11), 1994, pp. 984-987
Citations number
15
Categorie Soggetti
Chemistry
Journal title
ISSN journal
00347752
Volume
45
Issue
11
Year of publication
1994
Pages
984 - 987
Database
ISI
SICI code
0034-7752(1994)45:11<984:KIEITR>2.0.ZU;2-S
Abstract
The research works were aimed at determining the kinetic isotropic eff ects in the U(V) disproportionation reaction in H2O and D2O, in order to clarify this reaction mechanism. By polarographic determinations in usual and heavy water the rate constants for various temperatures and energy values were calculated. The resulting reverse kinetic isotopic effect shows that the U(V) disproportionation process is about 2.5 ti mes more rapid in D2O than in H2O, showing also the existence of a rap id protonation, deuteration respectively, preequilibrium, in parallel with the load-transfer reaction.