Authors:
S. Nikitenko Russian Academy of Sciences Institute of Physical Chemistry Leninsky pr. 31, 117915 B-312 Moscow (Russia)

Search for other papers by S. Nikitenko in
Current site
Google Scholar
PubMed
Close
,
M. Nikonov Russian Academy of Sciences Institute of Physical Chemistry Leninsky pr. 31, 117915 B-312 Moscow (Russia)

Search for other papers by M. Nikonov in
Current site
Google Scholar
PubMed
Close
, and
A. Garnov Russian Academy of Sciences Institute of Physical Chemistry Leninsky pr. 31, 117915 B-312 Moscow (Russia)

Search for other papers by A. Garnov in
Current site
Google Scholar
PubMed
Close
Restricted access

Abstract  

A kinetic isotope effect in Pu(V) disproportionation has been observed in nitric acid solution under the effect of power ultrasound with intensity 0.9W·cm–2 and frequency 22 kHz. The isotope separation coefficient for242Pu/239Pu isotopes was found to be 1.0081 at 20°C. Without sonication the k.i.e. was not observed. The rate constant of Pu(V) disproportionation was found to be accelerated under sonication. The rate constant determined was (5.7±0.6)·10–3 12·mol–2·s–1 atl=0.9 W·cm–2,v=22 kHz, [HNO3]=0.5 mol·l–1 andT=20°C. It is supposed that the acceleration of Pu(V) disproportionation and the kinetic isotope effect are due to the activation of plutonoyl groups in the interface between the cavitation bubble and the bulk solvent.

  • 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 Radionalytical and Nuclear Chemistry
Language English
Size A4
Year of
Foundation
1968
Volumes
per Year
1
Issues
per Year
12
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 0236-5731 (Print)
ISSN 1588-2780 (Online)